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Colochessum_0.3

Uploader:Mitgliedgrindstone
Datum/Zeit:10.01.2014 20:01:39
Hinweis: Dieser Quelltext ist Bestandteil des Projekts Colochessum, zu dem es auf FreeBASIC-Portal.de eine Projektseite gibt.

' COLOCHESSUM
'*****************************************************************************************
' This program was written on the base of "gui.exe" written by VANYA, who's graphics and
' animation routines were inherited nearly unchanged.
' The pieces were created by BasicCoder2
' Special thanks to ALWIM and Roland Chastain for their helpful hints.
'*****************************************************************************************

#Include Once "windows.bi"
#Include "fbgfx.bi"
#Include "vbcompat.bi"

Type chessMove
    x1 As Integer
    x2 As Integer
    y1 As Integer
    y2 As Integer
    t1 As Integer
    t2 As Integer
End Type

Type wText
    opponent As String
    move As String
    depth As String
End Type

Const As Integer castlingWhite = 1, castlingBlack = 2, cfont = RGB(0,0,0), _
                 cback = RGB(100,255,100), cbacklt = RGB(220,255,220)
Const As String w = "white", b = "black"

Dim Shared As Integer mx, my, btn, ox, oy, dx, dy, depth, moveTimePreset, currentWhite, _
                      currentBlack, errorCount, moveCount, relSpeed, _
                      animationSpeed, ExitCode, count50, pchoice, moveTimeHandicap, _
                      drawnGames, mox, moy, mob, mow, gameCount, depthPreset, depthHandicap, _
                      gameTimePreset, gameTimeHandicap, menuitemhit
Dim Shared As Integer board(12,12) 'internal representation of board
Dim Shared As Integer moveTime(2), winEngine(2), depthEngine(2), timeLeft(2), gameTime(2), _
                      timePlayed(2)
Dim Shared As Integer mateFlag, errorFlag, continueFlag, replayFlag, startNewFlag, setEngineOptionsFlag 'flags
Dim Shared As Integer bx, by        'position top/left of board
Dim Shared As wText wt
Dim Shared As FB.Image Ptr sImage
Dim Shared As FB.Image Ptr iPiece(12) '12 images
Dim Shared As String engine(2), matesign(2)
ReDim Shared As String fen(1), movetable(1), engineOptions(5,1), testarray(-5 To 10) '
Dim Shared As String hod, moves, currDepth, nameWhite, castlingFlag, fenstr, menuitem, _
                     nameBlack, WindowText, move, opponent, playmode, lastmove, replayMoves, _
                     iniFile
Dim Shared As HANDLE hReadChildPipeWhite, hWriteChildPipeWhite, hReadChildPipeBlack, _
                     hWriteChildPipeBlack, hReadPipeWhite, hWritePipeWhite, hReadPipeBlack, _
                     hWritePipeBlack, hwndThisWindow, hProcessHandleWhite, hProcessHandleBlack
Dim Shared As Any Ptr thMouse
Dim Shared As ZString * 100 iniBuffer
Dim Shared As Double gameStamp, timeRemind


Declare Function GetEngineResponse(opponent As String) As String
Declare Function GetMove(opponent As String) As String
Declare Sub WriteEngineInfo(opponent As String, s As String)
Declare Sub update()
Declare Function strMoveToNumMove(move As String) As chessMove
Declare Sub makeMove(cMove As chessMove)
Declare Sub SetTitleBar
Declare Sub CloseEngines
Declare Sub PrintMoveTable
Declare Function makeFen() As String
Declare Function deleteFromString(text As String, character As String) As String
Declare Sub fenToBoard(fen As String)
Declare Function checkForStale() As Integer
Declare Sub mouseMenu(text As String, separator As String, lin As Integer = 1, _
                  col As Integer = 1, foreground As UInteger, background As UInteger, _
                  mode As Integer = 0)
Declare Sub continueTurnament()
Declare Sub replayGame()
Declare Sub setup
Declare Sub setupEngine(engine As String, engNumber As Integer)
Declare Sub setEngineOptions(engine As String)

Declare Sub showInternalBoard()
Declare Sub pCon OverLoad (t As String = "",text As String)
Declare Sub pCon (text As String)
Declare Sub pCon (t As String = "",x As Integer)
Declare Sub pCon (x As Integer)
Declare Function timeFormat (seconds As Double, mode As Integer = 0) As String
Declare Sub Scan
Declare Sub GetEngineOptions(engine As String)


Dim As Integer x, y, menlin, mencol
Dim As String datum, g, g2, matecomp, movecomp, winner, keypressed
Dim As chessMove cMove
Dim As STARTUPINFO siWhite, siBlack
Dim As PROCESS_INFORMATION pi
Dim As SECURITY_ATTRIBUTES sa

Enum
    oname = 1
    otype
    odefault
    omin
    omax
    ovar = omin
End Enum


ScreenRes 640,608,32,2
ScreenSet 1,1

hwndThisWindow = GetForegroundWindow() 'get the window handle

startNew:

MkDir(ExePath + "\engines") 'create engines directory if not exists

iniFile = ExePath + "\setup.ini"
If Not FileExists(inifile) Then 'create .ini - file
    Open inifile For Output As #1
    Print #1, "[]"
    Close 1
EndIf

'get variables from the .ini-file
GetPrivateProfileString("","engine1","none",@iniBuffer,100,StrPtr(iniFile))
engine(1) = iniBuffer

GetPrivateProfileString("","engine2","none",@iniBuffer,100,StrPtr(iniFile))
engine(2) = iniBuffer

GetPrivateProfileString("","animationSpeed","15",@iniBuffer,100,StrPtr(iniFile))
animationSpeed = Val(iniBuffer)

GetPrivateProfileString("","playmode","movetime",@iniBuffer,100,StrPtr(iniFile))
playmode = iniBuffer

GetPrivateProfileString("","moveTimePreset","100",@iniBuffer,100,StrPtr(iniFile))
moveTimePreset = Val(iniBuffer)

GetPrivateProfileString("","moveTimeHandicap","100",@iniBuffer,100,StrPtr(iniFile))
moveTimeHandicap = Val(iniBuffer)

GetPrivateProfileString("","depthPreset","10",@iniBuffer,100,StrPtr(iniFile))
depthPreset = Val(iniBuffer)

GetPrivateProfileString("","depthHandicap","1",@iniBuffer,100,StrPtr(iniFile))
depthHandicap = Val(iniBuffer)

GetPrivateProfileString("","gameTimePreset","300",@iniBuffer,100,StrPtr(iniFile))
gameTimePreset = Val(iniBuffer) 'default 5 minutes

GetPrivateProfileString("","gameTimeHandicap","10",@iniBuffer,100,StrPtr(iniFile))
gameTimeHandicap = Val(iniBuffer)

''***************************************************************
''for testing. in the final version these variables will be
'' set up with an .ini - file
'
'engine(1) = "stockfish_4_32bit.exe"
''engine(2) = "stockfish_4_32bit.exe"
''engine(1) = "Fruit-2-3-1.exe"
'engine(2) = "Fruit-2-3-1.exe"
'
'playmode = "movetime"
'moveTimePreset = 1000
'moveTimeHandicap = 1000
'
''playmode = "depth"
'depth = 10
'
''animationSpeed = 15
''GetPrivateProfileString(0,"animationSpeed","15",@iniBuffer,100
'
''***************************************************************
Color cfont,cback
Cls

mainMenu:

Color cfont,cback
Cls

Locate 15,20
Print "**********  M A I N   M E N U  **********"

mencol = 25
menlin = 20

Do 'main menu loop
    keypressed = Inkey
    menuitem = ""

    mouseMenu(" B = Begin new turnament ","=",menlin,mencol,cfont,cback)
    mouseMenu(" C = Continue last turnament ","=",menlin + 2,mencol,cfont,cback)
    mouseMenu(" R = Replay game ","=",menlin + 4,mencol,cfont,cback)
    mouseMenu(" S = Setup ","=",menlin + 6,mencol,cfont,cback,0)
    mouseMenu(" Esc = Quit program ","=",menlin + 8,mencol,cfont,cback)

    Select Case menuitem 'convert menuitem to keystroke
        Case ""
                'do nothing
        Case "Esc"
            keypressed = Chr(27)
        Case Else
            keypressed = LCase(menuitem) 'key
    End Select

    Select Case keypressed
        Case "b" 'begin new turnament
            winEngine(1) = 0
            winEngine(2) = 0
            drawnGames = 0
            moveTime(1) = moveTimePreset
            moveTime(2) = moveTimePreset
            depthEngine(1) = depthPreset
            depthEngine(2) = depthPreset
            gameTime(1) = gameTimePreset
            gameTime(2) = gameTimePreset
            Exit Do
        Case "c" 'continue last turnament
            continueTurnament
            'sleep
            Exit Do
        Case "r" 'replay game
            replayGame
            Exit Do
        Case "s" 'setup menu
            setup
            GoTo mainMenu
        Case Chr(27), Chr(255,107) 'end program
            End
    End Select
Loop

Cls

Do 'turnament loop
    ReDim fen(1)
    ReDim movetable(0)
    If (replayFlag = 0) Or (gameStamp = 0) Then
        gameStamp = Now 'game identifier
    EndIf

    count50 = 0

    castlingFlag = "KQkq"

    If replayFlag <> 1 Then 'no manual replay
        gameCount += 1 'game counter
        Open ExePath + "\ucilog.txt" For Output As #3 'initiate new file
        Print #3, gamestamp
        Close 3
        Open ExePath + "\fenlog.txt" For Output As #4 'initiate new file
        Print #4, gamestamp
        Close 4
        'swap engines
        If gameCount And 1 Then 'every odd game number
            currentWhite = 1
            currentBlack = 2
        Else 'every even game number
            currentWhite = 2
            currentBlack = 1
        EndIf

        'install the pipes to the two engines
        sa.nLength = SizeOf(SECURITY_ATTRIBUTES)
        sa.lpSecurityDescriptor = NULL
        sa.bInheritHandle = TRUE

        'start and connect white engine
        CreatePipe(@hReadChildPipeWhite,@hWritePipeWhite,@sa,0)
        CreatePipe(@hReadPipeWhite,@hWriteChildPipeWhite,@sa,0)

        GetStartupInfo(@siWhite)

        siWhite.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW
        siWhite.wShowWindow = SW_HIDE
        siWhite.hStdOutput  = hWriteChildPipeWhite
        siWhite.hStdError   = hWriteChildPipeWhite
        siWhite.hStdInput   = hReadChildPipeWhite

        CreateProcess(0,ExePath + "\engines\" + engine(currentWhite),0,0,TRUE,0,0,0,@siWhite,@pi)

        hProcessHandleWhite = pi.hProcess

        CloseHandle(hWriteChildPipeWhite)
        CloseHandle(hReadChildPipeWhite)

        'start and connect black engine
        CreatePipe(@hReadChildPipeBlack,@hWritePipeBlack,@sa,0)
        CreatePipe(@hReadPipeBlack,@hWriteChildPipeBlack,@sa,0)

        GetStartupInfo(@siBlack)

        siBlack.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW
        siBlack.wShowWindow = SW_HIDE
        siBlack.hStdOutput  = hWriteChildPipeBlack
        siBlack.hStdError   = hWriteChildPipeBlack
        siBlack.hStdInput   = hReadChildPipeBlack

        CreateProcess(0,ExePath + "\engines\" + engine(currentBlack),0,0,TRUE,0,0,0,@siBlack,@pi)
        hProcessHandleBlack = pi.hProcess

        CloseHandle(hWriteChildPipeBlack)
        CloseHandle(hReadChildPipeBlack)
    EndIf

    sImage = ImageCreate( 42, 42, 0 )  'save screen data

    'THIS DETERMINES WHERE TO PLACE BOARD IN WINDOW
    bx = 150
    by = 30

    'read board
    Restore boardLayout
    For j As Integer = 0 To 11
        For i As Integer = 0 To 11
            Read board(i,j)
        Next i
    Next j

    'copy images from data statements to screen
    Restore Pieces
    For i As Integer = 0 To 5   'for each piece
        For y As Integer = 0 To 41  'for each row
            Read datum
            For x As Integer = 0 To 41  'for each column
                If Mid(datum,x+1,1)="." Then
                    PSet(x+i*42,y),RGB(255,0,255) 'transparent color
                    PSet(x+i*42+252,y),RGB(255,0,255)
                End If
                If Mid(datum,x+1,1)="#" Then
                    PSet(x+i*42,y),cfont
                    PSet(x+i*42+252,y),cfont
                End If
                If Mid(datum,x+1,1)="*" Then
                    PSet(x+i*42,y),RGB(120,120,180)
                    PSet(x+i*42+252,y),RGB(250,200,200)
                End If
            Next x
        Next y
    Next i
    'sleep

    'allocate memory for 12 images
    For i As Integer = 0 To 11
        iPiece(i) = ImageCreate(42,42,0)
    Next i

    'get set of 12 images
    For i As Integer = 0 To 11
        Get (i*42,0)-(i*42+41,41), iPiece(i)
    Next i

    update()

    'reset variables
    move = ""
    wt.move = "xx xx"
    opponent = b '(!)
    hod = "position startpos moves"
    moves = ""
    mateFlag = 0
    moveCount = 0
    If replayFlag = 0 Then 'no replay
        timeLeft(1) = gameTime(1) * 1000
        timeLeft(2) = gameTime(2) * 1000
        timePlayed(1) = 0
        timePlayed(2) = 0
    EndIf

    If replayFlag <> 1 Then
        Open ExePath + "\gamelog.txt" For Output As #1 'open the protocol file
        Print #1, "game";gameCount
        Print #1, "stamp";gamestamp
        Locate 52,30
        Print "LOADING ENGINES"

        WriteEngineInfo(w,"uci")
        WriteEngineInfo(b,"uci")

        Do
          g = GetEngineResponse(w)
        Loop Until InStr(g,"uciok")
        x = InStr(g,"id name ") + 8
        nameWhite = Mid(g, x, InStr(x,g,Chr(13)) - x) 'get the name of engine 1

        Do
          g = GetEngineResponse(b)
        Loop Until InStr(g,"uciok")
        x = InStr(g,"id name ") + 8
        nameBlack = Mid(g, x, InStr(x,g,Chr(13)) - x) 'get the name of engine 2

        'write to protocol file
        Print #1, "white ";nameWhite;"  (";engine(currentWhite);")"
        Print #1, "black ";nameBlack;"  (";engine(currentBlack);")"
        Print #1, "mode  ";playmode;
        Select Case playmode
            Case "depth"
                Print #1, depth
            Case "movetime"
                Print #1, moveTimePreset
            Case "gametime"
                Print #1, gameTimePreset
        End Select
        Print #1, ""
        'Close 1

        Open ExePath + "\turnamentlog.txt" For Append As #2
        Print #2, ""
        Print #2, "game";gameCount
        Print #2, "stamp";gameStamp
        Print #2, "white ";nameWhite;"   ";engine(currentWhite)
        Print #2, "black ";nameBlack;"   ";engine(currentBlack)
        Print #2, "mode  ";playmode;
        Select Case playmode
            Case "depth"
                Print #2, depth
            Case "movetime"
                Print #2, moveTimePreset;" (+";moveTimeHandicap;")"
            Case "gametime"
                Print #2, gameTimePreset;" (";gameTimeHandicap;")"
        End Select
        Close 2

        'get the "mate"-messages from engine 1
        WriteEngineInfo(w,"position fen 7K/6q1/7b/8/8/8/8/6k1 w - - 3 41 moves")
        WriteEngineInfo(w,"go movetime 10")
        matesign(1) = GetMove("fullwhite")

        'get the "mate"-messages from engine 2
        WriteEngineInfo(b,"position fen 7K/6q1/7b/8/8/8/8/6k1 w - - 3 41 moves")
        WriteEngineInfo(b,"go movetime 10")
        matesign(2) = GetMove("fullblack")

        'Open ExePath + "\gamelog.txt" For Append As #1 'open the protocol file
        Print #1, matesign(1);"*"
        Print #1, matesign(2);"*"
        Close 1

        'set engine 1 options
        setEngineOptions(w)
        setEngineOptions(b)

    EndIf

    '******** for testing *****************

    'fenstr = "7K/6q1/7b/8/8/8/8/6k1 w - - 3 41" 'test mate response
    'fenstr = "4k3/8/8/8/8/8/1P6/4K3 w - - 5 39"
    'fenstr = "3b4/7r/K7/8/k7/8/8/8 w - - 3 26" 'test stalemate
    'fenstr = "k7/P7/8/8/8/8/8/5KN1 b - - 3 26" 'test dead position
    'fenstr = "k7/8/8/8/8/8/8/1B3KNN w - - 3 26" 'test check by knight

    'fenToBoard(fenstr)
    'hod = "position fen " + fenstr + " moves"

    'fenToBoard("4N3/p7/1p6/n1p1kB1p/2P1Q3/1P6/P6P/6K1 b - - 3 56")

    '50 moves
    'hod = "position startpos moves b1c3 d7d5 d2d4 g8f6 c1f4 e7e6 e2e3 f8e7 f1d3 e8g8 g1f3 f6h5 f4g3 b8d7 f3g5 h5g3 d3h7 g8h8 g5f7 f8f7 h2g3 d7f6 h7g6 h8g8 g3g4 e6e5 d4e5 f6g4 g6f7 g8f7 c3d5 c7c6 d5e7 d8e7 d1f3 f7g8 e1c1 c8e6 f3h3 g4h6 h3g3 h6f7 f2f4 e6f5 a2a3 e7c5 e3e4 f5e4 g3b3 e4d5 b3b7 a8f8 b7b4 c5b4 a3b4 f8b8 b4b5 b8b5 h1h2 f7h6 d1d3 g8f7 b2b3 b5b4 c2c4 d5e6 h2h5 a7a5 d3c3 a5a4 c1b2 c6c5 h5h1 a4b3 c3b3 b4c4 b3b7 f7g6 g2g3 c4b4 b7b4 c5b4 h1a1 h6g4 a1a7 b4b3 a7b7 g4f2 b7b6 g6f5 b6d6 e6c4 d6d4 f2d3 b2a1 c4b5 d4d5 b3b2 a1b1 b5c6 d5d4 c6b5 d4d6 b5c4 e5e6 f5f6 f4f5 g7g6 f5g6 f6g6 e6e7 g6f7 d6d3 c4d3 b1b2 d3b1 e7e8r f7e8 b2b1 e8d7 b1c2 d7c6 c2d3 c6d5 g3g4 d5e6 g4g5 e6d5 g5g6 d5e6 d3d4 e6f6 g6g7 f6g7"
    'hod = "position startpos moves b1c3 d7d5 d2d4 g8f6 c1f4 e7e6 e2e3 f8e7 f1d3 e8g8 g1f3 f6h5 f4g3 b8d7 f3g5 h5g3 d3h7 g8h8 g5f7 f8f7 h2g3 d7f6 h7g6 h8g8 g3g4 e6e5 d4e5 f6g4 g6f7 g8f7 c3d5 c7c6 d5e7 d8e7 d1f3 f7g8 e1c1 c8e6 f3h3 g4h6 h3g3 h6f7 f2f4 e6f5 a2a3 e7c5 e3e4 f5e4 g3b3 e4d5 b3b7 a8f8 b7b4 c5b4 a3b4 f8b8 b4b5 b8b5 h1h2 f7h6 d1d3 g8f7 b2b3 b5b4 c2c4 d5e6 h2h5 a7a5 d3c3 a5a4 c1b2 c6c5 h5h1 a4b3 c3b3 b4c4 b3b7 f7g6 g2g3 c4b4 b7b4 c5b4 h1a1 h6g4 a1a7 b4b3 a7b7 g4f2 b7b6 g6f5 b6d6 e6c4 d6d4 f2d3 b2a1 c4b5 d4d5 b3b2 a1b1 b5c6 d5d4 c6b5 d4d6 b5c4 e5e6 f5f6 f4f5 g7g6 f5g6 f6g6 e6e7 g6f7 d6d3 c4d3 b1b2 d3b1 e7e8r f7e8 b2b1 e8d7 b1c2 d7c6 c2d3 c6d5 g3g4 d5e6 g4g5 e6d5 g5g6 d5e6 d3d4 e6f6 g6g7"
    'hod = "position startpos moves e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 b8c6 f1b5 c8f5 e1g1 a7a6 b5c6 b7c6 b1a3 a8b8 d1e2 d8c8 a3c4 c8d7 f1e1 h7h6 c1d2 e7e6 b2b3 f5c2 c4a5 b8b6 e2c4 c2f5 a1c1 d5b4 e5d6 c7d6 d2b4 d6d5 f3e5 d5c4 e5d7 f8b4 d7b6 b4a5 b6c4 a5e1 c1e1 f7f6 f2f3 e8d7 g1f2 h8b8 e1c1 b8b5 g2g4 f5g6 c1d1 g6c2 d1d2 c2g6 h2h4 h6h5 f2e3 d7e7 d2g2 g6f7 g4h5 b5h5 g2g7 h5h4 c4a5 h4h2 a2a3 e7f8 g7g3 h2a2 a3a4 a2b2 g3g1 e6e5 d4e5 f7b3 g1g6 f6e5 a5b3 b2b3 e3e4 b3c3 e4e5 f8f7 g6h6 c3e3 e5f4 e3a3 h6c6 a3a4 f4f5 a4a5 f5g4 a5a2 g4g5 a6a5 f3f4 a5a4 c6a6 a4a3 g5f5 f7e7 a6a7 e7d6 f5e4 a2a1 e4d4 a1d1 d4c4 d1c1 c4d4 c1a1 a7a6 d6c7 a6a5 c7b6 a5a4 b6b5 a4a7 b5b4 a7b7 b4a4 b7a7 a4b3 a7b7 b3a2 f4f5 a1b1 b7g7 b1f1 d4e5 a2b3 g7b7 b3c4 b7c7 c4b4 c7a7 f1e1 e5d5 e1d1 d5e6 b4b3 f5f6 a3a2 f6f7 d1e1 e6d5 e1f1 a7b7 b3c3 b7a7 c3b2 a7b7 b2c2 b7a7 a2a1q a7a1 f1f7 a1e1 c2b2 e1g1 b2b3 g1a1 f7f3 a1b1 b3c2 b1a1 c2b2 a1d1 f3c3 d1e1 b2b3 e1a1 b3b2 a1d1 b2b3 d1a1"
    'hod = " position startpos moves e2e4 g8f6 e4e5 f6d5 c2c4 d5b4 d2d4 b8c6 a2a3 b4a6 b2b4 a6b8 b1c3 d7d6 g1f3 c8g4 b4b5 g4f3 g2f3 c6a5 c1g5 h7h6 g5e3 a7a6 f1e2 a6b5 c3b5 b8d7 f3f4 c7c6 b5c3 d7b6 c4c5 d6c5 d4c5 b6d5 d1c2 d5e3 f2e3 e7e6 c3e4 d8h4 e1d1 g7g5 e4f6 e8e7 f4g5 f8g7 h1f1 h6g5 f6g4 h8d8 d1c1 h4h8 c2c3 d8d5 g4f6 g7f6 e5f6 e7e8 c1b1 h8h2 a1a2 h2h7 a2c2 e8f8 e3e4 h7e4 e2f3 e4f5 f1h1 f8g8 f3d5 c6d5 c3h3 f5f6 h3h7 g8f8 h7h8 f8e7 h8a8 f6f3 h1h8 f3b3 b1c1 b3e3 c1d1 e3g1 d1e2 g1g2 e2e1 g2g1 e1d2 g1f2 d2c3 f2e3 c3b2 e3b3 b2a1 b3a3 a1b1 a3b4 b1c1 b4e1 c1b2 e1b4 b2a1   *b4a3
'*"


    '***************  MAIN LOOP ************************
    Do 'next halfmove
        'switch opponents
        If opponent = w Then
            opponent = b 'black
        Else
            opponent = w 'white
            moveCount += 1 'move number
        EndIf

        g = makeFen
        'pCon("",g)
        If replayFlag <> 1 Then
            Open ExePath + "\fenlog.txt" For Append As #4 'write fen-string to log fole
            Print #4, g
            Close #4
        EndIf
        Locate 57,1
        ReDim Preserve fen(UBound(fen) + 1)
        fen(UBound(fen)) = g 'write fen-string to table

        ScreenLock
        update
        Scan
        ScreenUnLock
        'showInternalBoard

        mateFlag = 0
        errorCount = 0 'reset the error counter

        Print #1, Time;" ";moveCount;" ";opponent;" ";hod;moves 'write to protocol file
        Print #1, ""

        If replayFlag = 0 Then 'no replay --> calculate next move
            WriteEngineInfo(opponent,hod + moves) 'send the actual board setup to the engine
            ScreenLock
            update()
            Scan
            ScreenUnLock
            Select Case playmode
                Case "depth"
                    Select Case opponent
                        Case w
                            WriteEngineInfo(opponent,"go depth " + Str(depthEngine(currentWhite))) 'depth mode
                        Case b
                            WriteEngineInfo(opponent,"go depth " + Str(depthEngine(currentBlack)))
                    End Select
                Case "movetime"
                    timeRemind = Timer
                    Select Case opponent 'call the actual opponent with its movetime
                        Case w
                            WriteEngineInfo(opponent,"go movetime " + Str(moveTime(currentWhite)))
                        Case b
                            WriteEngineInfo(opponent,"go movetime " + Str(moveTime(currentBlack)))
                    End Select
                Case "gametime"
                    timeRemind = Timer
                    Select Case opponent 'call the actual opponent with its rest time
                        Case w
                            WriteEngineInfo(opponent,"go wtime " + Str(timeLeft(currentWhite)))
                        Case b
                            WriteEngineInfo(opponent,"go btime " + Str(timeLeft(currentBlack)))
                    End Select
            End Select
        EndIf

        move = GetMove(opponent) 'read the "bestmove" from the engine

        If setEngineOptionsFlag Then
            setEngineOptions(w)
            setEngineOptions(b)
            setEngineOptionsFlag = 0
            update
        EndIf

        If move = "Esc" Then 'start a new game
            Close
            CloseEngines
            replayFlag = 0
            GoTo startNew
        EndIf

        If (playmode = "gametime") And (replayFlag = 0) Then 'subtract the calculating time
            Select Case opponent
                Case w
                    timeLeft(currentWhite) -= 1000 * (Timer - timeRemind)
                    If timeLeft(currentWhite) <= 0 Then
                        move = "timeout"
                    EndIf
                Case b
                    timeLeft(currentBlack) -= 1000 * (Timer - timeRemind)
                    If timeLeft(currentBlack) <= 0 Then
                        move = "timeout"
                    EndIf
            End Select
            Open ExePath + "\timelog.txt" For Output As #6
            Print #6, gameStamp
            Print #6, timeLeft(1)
            Print #6, timeLeft(2)
            Close 6
        ElseIf (playmode = "movetime") And (replayFlag = 0) Then 'add the calculating time
            Select Case opponent
                Case w
                    timePlayed(currentWhite) += 1000 * (Timer - timeRemind)
                Case b
                    timePlayed(currentBlack) += 1000 * (Timer - timeRemind)
            End Select
            Open ExePath + "\timelog.txt" For Output As #6
            Print #6, gameStamp
            Print #6, timePlayed(1)
            Print #6, timePlayed(2)
            Close 6
        EndIf

        lastmove = move

        'check if the response is a correct move
        If move = "mate" Then 'checkmate
            If checkForStale Then
                mateFlag = 2 'stalemate
            Else
                mateFlag = 1 'checkmate
            EndIf

        ElseIf move = "timeout" Then
            mateFlag = 6

        ElseIf InStr(Mid(move,1,1),Any "abcdefgh") + _ '1st character
               InStr(Mid(move,2,1),Any "12345678") + _ '2nd character
               InStr(Mid(move,3,1),Any "abcdefgh") + _ '3rd character
               InStr(Mid(move,4,1),Any "12345678") + _ '4th character
               InStr(Mid(move,5,1),Any "qrbn") <> Len(move) Then '5th character (if existing)
          'error
          Locate 52,30
            Print #1, move
            Print #1, "game aborted due to response error caused by  ";
            Select Case opponent
                Case w
                    Print #1, nameWhite
                Case b
                    Print #1, nameBlack
            End Select
            If replayFlag <> 1 Then
                Open ExePath + "\turnamentlog.txt" For Append As #2
                Print #2, hod;moves;"   *";move;"*"
                Print #2, "game aborted due to response error caused by  ";
                Select Case opponent
                    Case w
                        Print #2, nameWhite
                    Case b
                        Print #2, nameBlack
                End Select
            Close 2
            EndIf
            Exit Do 'terminate current game
        EndIf

        Do 'check for drawn game
            If mateFlag Then 'checkmate or stalemate
                Exit Do 'leave the loop
            EndIf

            'check for threefold repetition
            g = makeFen 'create fen-string
            Mid(g,InStr(g," "),3) = "   "
            g = RTrim(g,Any " 0123456789")
            y = 0
            For x = UBound(fen) To 1 Step -1
                g2 = fen(x)
                Mid(g2,InStr(g2," "),3) = "   " 'delete opponent
                g2 = RTrim(g2,Any " 0123456789") 'delete moves
                If g2 = g Then
                    y += 1
                EndIf
                If y > 1 Then
                    mateFlag = 3 'threefold repetition
                    Exit Do 'leave the loop
                EndIf
            Next

            'check for dead position
            g = ""
            For x = 1 To InStr(fen(UBound(fen))," ") - 1
                If InStr(Mid(fen(UBound(fen)),x,1),Any "012345678/") = 0 Then   'isolate pieces from fen-string
                    g += Mid(fen(UBound(fen)),x,1)
                EndIf
            Next
            Do 'sort pieces in alphabetical order
                y = 0
                For x = 0 To Len(g) - 2
                    If g[x] > g[x+1] Then
                        Swap g[x],g[x+1]
                        y = 1
                    EndIf
                Next
            Loop While y
            Select Case LCase(g) 'check for pieces left on the board
                Case "kk","kbk","knk","kkb","kkn"
                    mateFlag = 4
                    Exit Do 'leave the loop
            End Select

            'check for 50-moves-rule
            If count50 > 99 Then
                mateFlag = 5
                Exit Do 'leave the loop
            EndIf

        Loop Until 1 'always leave the loop

        If mateFlag Then 'end game
            'showInternalBoard
            If replayFlag <> 1 Then
                Open ExePath + "\gamelog.txt" For Append As #1
                Open ExePath + "\turnamentlog.txt" For Append As #2
            EndIf
            Select Case mateFlag
                Case 1 'checkmate
                    Locate 51,29
                    Print " << CHECK MATE >> "
                    'write to protocol file
                    Print #1, " << CHECK MATE >> "
                    Locate 69,20
                    Select Case opponent 'set the win counter and write to protocol file
                        Case w
                            Print #1, "black (";nameBlack;
                            Print "<< BLACK (";nameBlack;
                            winEngine(currentBlack) += 1 'winner
                            Select Case playmode
                                Case "movetime"
                                    moveTime(currentWhite) += moveTimeHandicap 'loser
                                    moveTime(currentBlack) -= moveTimeHandicap 'winner
                                Case "depth"
                                    depthEngine(currentWhite) += depthHandicap 'loser
                                    depthEngine(currentBlack) -= depthHandicap 'winner
                                Case "gametime"
                                    gameTime(currentWhite) += gameTimeHandicap 'loser
                                    gameTime(currentBlack) -= gameTimeHandicap 'winner
                            End Select
                        Case b
                            Print #1, "white (";nameWhite;
                            Print "<< WHITE (";nameWhite;
                            winEngine(currentWhite) += 1 'winner
                            Select Case playmode
                                Case "movetime"
                                    moveTime(currentBlack) += moveTimeHandicap 'loser
                                    moveTime(currentWhite) -= moveTimeHandicap 'winner
                                Case "depth"
                                    depthEngine(currentBlack) += depthHandicap 'loser
                                    depthEngine(currentWhite) -= depthHandicap 'winner
                                Case "gametime"
                                    gameTime(currentBlack) += gameTimeHandicap 'loser
                                    gameTime(currentWhite) -= gameTimeHandicap 'winner
                            End Select
                    End Select
                    Print #1, ") wins in"; moveCount; " moves"
                    Print ") wins in"; moveCount; " moves >>"

                    'write to turnament log
                    If replayFlag <> 1 Then
                        Open ExePath + "\turnamentlog.txt" For Append As #2
                    EndIf
                    Print #2, "check mate   ";
                    Select Case opponent
                        Case w
                            Print #2, nameBlack;" wins as black ";
                        Case b
                            Print #2, nameWhite;" wins as white ";
                    End Select
                    Print #2, "in"; moveCount; " moves"

                    'showInternalBoard

                Case 2 'stalemate
                    drawnGames += 1
                    Print #2, "drawn because of stalemate after"; moveCount; " moves"
                    Locate 51,29
                    Print " << STALE MATE >> "
                Case 3 'threefold repetition
                    drawnGames += 1
                    Print #2, "drawn because of threefold repetition after"; moveCount; " moves"
                    Locate 51,29
                    Print " << THREEFOLD REPETITION    >> "
                Case 4 'dead position
                    drawnGames += 1
                    Print #2, "drawn because of dead position after"; moveCount; " moves"
                    Locate 51,29
                        Print " << DEAD POSITION >> "
                Case 5 '50-moves-rule
                    drawnGames += 1
                    Print #2, "drawn because of breaking the 50-moves-rule after"; moveCount; " moves"
                    Locate 51,29
                    Print " << 50 MOVES >> "
                Case 6 'timeout
                    update
                    Locate 51,29
                    Print " << TIMEOUT >> "
                    'write to protocol file
                    Print #1, " << TIMEOUT >> "
                    Locate 69,20
                    Select Case opponent 'set the win counter and write to protocol file
                        Case w
                            Print #1, "black (";nameBlack;
                            Print "<< BLACK (";nameBlack;
                            winEngine(currentBlack) += 1 'winner
                            Select Case playmode
                                Case "movetime"
                                    moveTime(currentWhite) += moveTimeHandicap 'loser
                                    moveTime(currentBlack) -= moveTimeHandicap 'winner
                                Case "depth"
                                    depthEngine(currentWhite) += depthHandicap 'loser
                                    depthEngine(currentBlack) -= depthHandicap 'winner
                                Case "gametime"
                                    gameTime(currentWhite) += gameTimeHandicap 'loser
                                    gameTime(currentBlack) -= gameTimeHandicap 'winner
                            End Select
                        Case b
                            Print #1, "white (";nameWhite;
                            Print "<< WHITE (";nameWhite;
                            winEngine(currentWhite) += 1 'winner
                            Select Case playmode
                                Case "movetime"
                                    moveTime(currentBlack) += moveTimeHandicap 'loser
                                    moveTime(currentWhite) -= moveTimeHandicap 'winner
                                Case "depth"
                                    depthEngine(currentBlack) += depthHandicap 'loser
                                    depthEngine(currentWhite) -= depthHandicap 'winner
                                Case "gametime"
                                    gameTime(currentBlack) += gameTimeHandicap 'loser
                                    gameTime(currentWhite) -= gameTimeHandicap 'winner
                            End Select
                    End Select
                    Print #1, ") wins in"; moveCount; " moves"
                    Print ") wins in"; moveCount; " moves >>"

                    'write to turnament log
                    If replayFlag <> 1 Then
                        Open ExePath + "\turnamentlog.txt" For Append As #2
                    EndIf
                    Print #2, "timeout   ";
                    Select Case opponent
                        Case w
                            Print #2, nameBlack;" wins as black ";
                        Case b
                            Print #2, nameWhite;" wins as white ";
                    End Select
                    Print #2, "in"; moveCount; " moves"

            End Select
            Print #2, Mid(moves,2)
            Print #2, "*";lastmove;"*"
            Print #2, "total won ";engine(1);winEngine(1)
            Print #2, "total won ";engine(2);winEngine(2)
            Print #2, "total drawn ";drawnGames
            Close

            If replayFlag Then
                Sleep
            Else
                Sleep 10000
            EndIf

            Exit Do 'start next game
        EndIf

        moves += " " + move 'add the last move to the hod-string
        'showInternalBoard

        'save the moves string
        If replayFlag <> 1 Then
            Open ExePath + "\moveslog.txt" For Output As #5
            Print #5, gameStamp
            Print #5, Mid(moves,2)
            Close 5
        EndIf
        'add the last move to the movetable
        ReDim Preserve movetable(UBound(movetable) + 1)
        If opponent = w Then
            movetable(UBound(movetable)) = Right("  " + Str(moveCount),3)
        Else
            movetable(UBound(movetable)) = "   "
        EndIf
        movetable(UBound(movetable)) += " " + UCase(Left(move,2)) + " " + _
                                        UCase(Mid(move,3,2)) + " " + _
                                        UCase(Mid(move,5,1)) + " "

        wt.move = UCase(Left(move,2) + " " + Mid(move,3)) 'for title bar
        SetTitleBar 'set screenwindow title bar
        PrintMoveTable

        'update castlig flag
        Select Case Left(move,2)
            Case "a1" 'left white rook
                castlingFlag = deleteFromString(castlingFlag,"Q")
            Case "h1" 'right white rook
                castlingFlag = deleteFromString(castlingFlag,"K")
            Case "e1" 'white king
                castlingFlag = deleteFromString(castlingFlag,"QK")
            Case "a8" 'left black rook
                castlingFlag = deleteFromString(castlingFlag,"q")
            Case "h8" 'right black rook
                castlingFlag = deleteFromString(castlingFlag,"k")
            Case "e8" 'black king
                castlingFlag = deleteFromString(castlingFlag,"qk")
        End Select

        'show animated move
        cMove = strMoveToNumMove(move)
        makeMove(cMove)
        'show animated castling
        If (move = "e1g1") And pchoice = 6 Then
            cMove = strMoveToNumMove("h1f1")
            makeMove(cMove)
        ElseIf (move = "e1c1") And pchoice = 6 Then
            cMove = strMoveToNumMove("a1d1")
            makeMove(cMove)
        ElseIf (move = "e8g8") And pchoice = -6 Then
            cMove = strMoveToNumMove("h8f8")
            makeMove(cMove)
        ElseIf (move = "e8c8") And pchoice = -6 Then
            cMove = strMoveToNumMove("a8d8")
            makeMove(cMove)
        EndIf

        If InStr(fen(UBound(fen)),"h3") Then
            pCon("# ",fen(UBound(fen)))
        EndIf

        'g = fen(UBound(fen))
        'x = InStr(g," ")
        'x = InStr(x+1,g," ")+1
        'x = InStr(x+1,g," ")+1
        'g = Mid(g,x,InStr(x,g," ")-x)
        'pCon(Str(Len(g)),g)
        'If InStr(fen(UBound(fen)),"h3") Then
        '   pCon("# ",fen(UBound(fen)))
        'EndIf
        'sleep
        ScreenLock
        update()
        Scan
        ScreenUnLock
        'showInternalBoard

        g = Inkey 'check for keyboard input
        Do
            Select Case g
                Case Chr(27) 'terminate current game
                    drawnGames += 1
            End Select
            g = Inkey 'check for key pressed
        Loop While Len(g)

    Loop Until (g = Chr(27)) 'Or g = Chr(255,107) 'Esc, X

    If g = Chr(27) Then
        drawnGames += 1
    EndIf
    CloseEngines
    Close

Loop 'next game

Close
End

Sub update()
    Dim As Integer x, y
    Dim As Double t

    'ScreenLock()
    'drawBoard
    Color cfont,cback
    Cls
    Dim As Integer shade
    shade = 1
    For y As Integer = 0 To 7
        shade = -shade
        For x As Integer = 0 To 7
            If shade = -1 Then
                Line (bx+x*42,by+y*42)-(bx+x*42+41,by+y*42+41),RGB(252,206,156),bf
            Else
                Line (bx+x*42,by+y*42)-(bx+x*42+41,by+y*42+41),RGB(179,110,44),bf
            End If
            shade = -shade
        Next x
    Next y
    'border of board
    Line (bx-1,by-1)-(bx+336,by+336),cfont,b

    'now draw image on square
    For y As Integer = 0 To 7 'column
        For x As Integer = 0 To 7 'line
            'put image onto square
            If board(x+2,y+2) <> 7 And board(x+2,y+2) <> 0 Then
                If board(x+2,y+2) < 0 Then 'black
                    Put (bx+x*42,by+y*42),iPiece(Abs(board(x+2,y+2))-1),Trans
                Else 'white
                    Put (bx+x*42,by+y*42),iPiece(Abs(board(x+2,y+2))+5),Trans
                End If
            End If
        Next x
    Next y
    'print engine names and coordinates on screen
    Locate 2,22
    Print nameBlack
    Locate 49,22
    Print nameWhite
    For x = 1 To 8
        Locate 48 - 5.15 * x,17
        Print x
    Next
    Locate 47,22
    Draw String (168,371), "A    B     C    D    E    F    G     H"
    Locate 22,2
    Print "Game";gameCount
    Locate 23,2
    Print "Move";moveCount;" (";Str(count50);")"
    Locate 54,22
    Print "engine 1: ";engine(1)
    Select Case playmode
        Case "movetime"
            Print Tab(22);"movetime:";moveTime(1);" ms"
        Case "depth"
            Print Tab(25);"depth:";depthEngine(1)
        Case "gametime"
            Print Tab(22);"gametime: ";timeFormat(gameTime(1),1)
    End Select
    Print Tab(27);"won:";winEngine(1)
    Print
    Print Tab(22);"engine 2: ";engine(2)
    Select Case playmode
        Case "movetime"
            Print Tab(22);"movetime:";moveTime(2);" ms"
        Case "depth"
            Print Tab(25);"depth:";depthEngine(2)
        Case "gametime"
            Print Tab(22);"gametime: ";timeFormat(gameTime(2),1)
    End Select
    Print Tab(27);"won:";winEngine(2)
    Print
    Print Tab(19);"drawn games:";drawnGames
    Print
    Print Tab(15);"animation speed:";animationSpeed
    Print Tab(22);"playmode: ";playmode
    Print Tab(22);"handicap:";
    Select Case playmode
        Case "movetime"
            t = Abs(moveTimeHandicap * (winEngine(1) - winEngine(2)))
            Print t;" ms (";CInt(100 * t / moveTimePreset);"% )"
        Case "depth"
            Print Abs(depthHandicap * (winEngine(1) - winEngine(2)))
        Case "gametime"
            t = Abs(gameTimeHandicap * (winEngine(1) - winEngine(2)))
            Print " ";timeFormat(t,1);
            Print " (";CInt(100 * t / gameTimePreset);"% )"
    End Select

    PrintMoveTable

    If replayFlag = 1 Then
        Locate 2,30
        Print "R E P L A Y   M O D E"
        Locate 42,1
        Print " ---------------"
        Print
        Print
        Print
        Print " ---------------"
    EndIf

    'ScreenUnLock()
End Sub

Sub makeMove(cMove As chessMove)
    Dim As Integer choice, i, x  'number of selected piece
    Dim As Integer px1, py1, px2, py2, dx, dy  'moving data
    Dim As Double timeRem
    Dim As String g

    cMove.y1 = 8 - cMove.y1 'set correct line of internal board
    cMove.y2 = 8 - cMove.y2

    px1 = cMove.x1*42+bx   'screen pointer to chosen image
    py1 = cMove.y1*42+by
    px2 = cMove.x2*42+bx
    py2 = cMove.y2*42+by

    ox = px1
    oy = py1

    'make move on internal board
    choice = board(cMove.x1+2,cMove.y1+2)
    pchoice = choice

    count50 += 1
    If board(cMove.x2+2,cMove.y2+2) Then 'piece is captured
        Mid(movetable(UBound(movetable)),7,1) = "x"
        Mid(wt.move,3,1) = "x"
        SetTitleBar
        PrintMoveTable
        count50 = 0
    EndIf
    If Abs(choice) = 1 Then 'pawn is moved
        count50 = 0
    EndIf

    board(cMove.x2+2,cMove.y2+2) = choice
    board(cMove.x1+2,cMove.y1+2)=0  'erase data

    'convert to image ID of that number
    If choice < 0 Then
        choice = Abs(choice) - 1
    Else
        choice = choice + 5
    End If

    Select Case replayFlag
        Case 0, 1 'no or manual replay

            Line (px1,py1)-(px1+41,py1+41),Point(px1+2,py1+2),bf 'clear
            For i = 0 To 3
                Line (px1+i,py1+i)-(px1+41-i,py1+41-i),RGB(0,0,244),b  'source
                Line (px2+i,py2+i)-(px2+41-i,py2+41-i),RGB(0,255,0),b  'destination
            Next i

            'compute direction of movement
            If px1 > px2 Then
                dx = -1
            Else
                dx = 1
            End If
            If py1 > py2 Then
                dy = -1
            Else
                dy = 1
            End If

            Get (px1,py1)-(px1+41,py1+41),sImage
            Put (px1,py1),iPiece(choice),Trans
            ox = px1
            oy = py1

            timeRem = Timer
            While px1 <> px2 Or py1 <> py2
                If Timer > timeRem + .001 * animationSpeed Then
                    timeRem += .001 * animationSpeed'Timer

                    'update coordinates
                    If px1 <> px2 Then
                        px1 = px1 + dx
                    End If
                    If py1 <> py2 Then
                        py1 = py1 + dy
                    End If

                    ScreenLock
                    Put (ox,oy),sImage,PSet        'restore old back ground
                    Get (px1,py1)-(px1+41,py1+41),sImage 'save new back ground
                    Put (px1,py1),iPiece(choice),Trans  'place on new back ground
                    ox = px1
                    oy = py1
                    ScreenUnLock
                    Scan
                EndIf
            Wend

        Case 2 'instant replay

    End Select

    If Len(move) = 5 Then 'pawn promotion
        Select Case Mid(move,5,1) 'promote pawn to...
            Case "q"
                choice = Sgn(pchoice) * 5 'queen
            Case "b"
                choice = Sgn(pchoice) * 4 'bishop
            Case "n"
                choice = Sgn(pchoice) * 3 'knight
            Case "r"
                choice = Sgn(pchoice) * 2 'rook
        End Select
        board(cMove.x2+2,cMove.y2+2) = choice
    EndIf

    'check for en passant
    g = fen(UBound(fen))
    x = InStr(g," ")
    x = InStr(x+1,g," ") + 1
    x = InStr(x+1,g," ") + 1
    g = Mid(g,x,InStr(x,g," ") - x) 'en passant sign in fen-string
    'pCon(Str(Len(g)) + " ",g)
    'pCon("pchoice ",pchoice)
    'pCon("move ",move)
    'pCon("x2 ",cMove.x2+2)
    'pCon("y2 ",cMove.y2+2)

    If (Mid(move,3,2) = g) And (Abs(pchoice) = 1) Then 'en passant
        pCon("en passant","")
        Dim As Integer ff
        Open ExePath + "\enpassantlog.txt" For Append As ff
        Print #ff, "game ";gameCount
        Print #ff, "move ";moveCount
        Print #ff, "opponent ";opponent
        Print #ff, ""
        Close ff
        If cMove.y2 = 5 Then 'remove captured white pawn
            board(cMove.x2+2,6) = 0
        ElseIf cMove.y2 = 2 Then 'remove captured black pawn
            board(cMove.x2+2,5) = 0
        EndIf
        Mid(movetable(UBound(movetable)),7,1) = "x"
        Mid(wt.move,3,1) = "x"
        SetTitleBar
        PrintMoveTable
    EndIf
End Sub

'convert string chess moves to numbers
Function strMoveToNumMove(move As String) As chessMove
    Dim As chessMove cm
    Dim As String umove

    umove = UCase(move)

    cm.x1 = Asc(Mid(umove,1,1))-65
    cm.y1 = Val(Mid(umove,2,1))
    cm.x2 = Asc(Mid(umove,3,1))-65
    cm.y2 = Val(Mid(umove,4,1))

    Return cm
End Function

'convert chess move numbers to string format
Function numMovetoStrMove(cm As chessMove) As String
    Return Chr(cm.x1+65)+Str(cm.y1)+Chr(cm.x2+65)+Str(cm.y2)
End Function

Function GetMove(opp As String) As String
    Static As Integer begPtr, endPtr
    Static As String oldReplayMoves

    Dim As String g, sRet, key
    Dim As Integer x, full = 0, repmerk

    Scan

    If (replayMoves <> oldReplayMoves) Or (endPtr >= Len(replayMoves)) Then 'reset string pointers
        oldReplayMoves = replayMoves
        begPtr = 0
        endPtr = 0
    EndIf

    If Left(opp,4) = "full" Then 'don't edit the move message
        full = 1
        opp = Mid(opp,5)
        repmerk = replayFlag
        replayFlag = 0
    EndIf
    wt.opponent = opp 'for title bar

    Select Case replayFlag
        Case 0 'no replay
            g = ""
            Do
                key = InKey
                Select Case key
                    Case Chr(27)
                        Return "Esc" 'terminate game
                    'Case Chr(255,107) 'end program
                    '   End
                End Select

                g += GetEngineResponse(opp) 'request a message from the engine
                'print opponent and current depth to the screen
                x = InStrRev(g,"info depth ")
                currDepth = Str(Val(Mid(g,x+11,2)))
                Locate 25, 2
                Print UCase(opp)
                Locate 26, 2
                Print "   depth ";currDepth;" "
                wt.depth = currDepth 'for title bar
                SetTitleBar 'set title bar
                Locate 27,2
                Print "currmove "

                If (playmode = "gametime") And (timeRemind > 0) Then
                    Select Case opp
                        Case w
                            Locate 5,10
                            Print timeFormat(timeLeft(currentBlack)/1000,1)
                            Locate 46,9
                            Color cfont,cbacklt
                            Print " ";timeFormat(timeLeft(currentWhite)/1000 - (Timer - timeRemind),1);" "
                            Color cfont,cback
                        Case b
                            Locate 5,9
                            Color cfont,cbacklt
                            Print " ";timeFormat(timeLeft(currentBlack)/1000 - (Timer - timeRemind),1);" "
                            Color cfont,cback
                            Locate 46,10
                            Print timeFormat(timeLeft(currentWhite)/1000,1)
                    End Select
                ElseIf timeRemind > 0 Then
                    Select Case opp
                        Case w
                            Locate 5,10
                            Print timeFormat(timePlayed(currentBlack)/1000,1)
                            Locate 46,9
                            Color cfont,cbacklt
                            Print " ";timeFormat(timePlayed(currentWhite)/1000 + (Timer - timeRemind),1);" "
                            Color cfont,cback
                        Case b
                            Locate 5,9
                            Color cfont,cbacklt
                            Print " ";timeFormat(timePlayed(currentBlack)/1000 + (Timer - timeRemind),1);" "
                            Color cfont,cback
                            Locate 46,10
                            Print timeFormat(timePlayed(currentWhite)/1000,1)
                    End Select
                EndIf

                x = InStrRev(g,"bestmove")
            Loop Until x 'the engine has finished the calculating for this move

            sRet = Mid(g,x + 9,InStr(x + 9,g," ") - (x + 9)) 'isolate the data of the move

        Case 1 'manual replay
                Do 'manual replay loop
                    g = Inkey
                    menuitem = ""
                    mouseMenu(" PgDn -> move ","->",43,6,cfont,cback)
                    mouseMenu(" PgUp -> back ","->",44,6,cfont,cback)
                    mouseMenu(" Esc -> quit ","->",45,6,cfont,cback)

                    Select Case menuitem 'convert menuitem to keystroke
                        Case ""
                            'do nothing
                        Case "PgDn"
                            g = Chr(255,81) 'page down
                        Case "PgUp"
                            g = Chr(255,73) 'page up
                        Case "Esc"
                            g = Chr(27) 'esc
                        Case Else
                            'do nothing
                    End Select

                    Select Case g
                        Case Chr(255,81) 'page down --> next move
                            'parse moves list
                            begPtr = endPtr
                            endPtr = InStr(begPtr + 1,replayMoves," ")
                            If endPtr = 0 Then
                                endPtr = begPtr
                            EndIf
                            sRet = Mid(replayMoves,begPtr + 1,endPtr - begPtr - 1)
                            Exit Do

                        Case Chr(255,73) 'page up --> one move back
                            If UBound(fen) > 2 Then 'fen-strings available
                                sRet = Mid(replayMoves,begPtr + 1,endPtr - begPtr - 1)
                                ReDim Preserve movetable(UBound(movetable) - 1)
                                ReDim Preserve fen(UBound(fen) - 1)
                                fenToBoard(fen(UBound(fen)))
                                update
                                endPtr = begPtr
                                begPtr = InStrRev(replayMoves," ",endPtr - 1)
                            EndIf

                        Case Chr(27) 'Esc --> main menu
                            Return "Esc"

                        Case Chr(255,107) 'end program
                            End
                    End Select
                Loop

        Case 2 'instant replay
            'replaylist = "e2e4 g8f6 e4e5 f6d5 c2c4 d5b4 d2d4 d7d6 d1a4 b8c6 a2a3 b4a6 g1f3 c8d7 a4b3 d6e5 d4e5 b7b6 b3c2 g7g6 b2b4 f8g7 c2c3 d7g4 b1d2 a6b8 b4b5 c6a5 f1d3 b8d7 d3e4 a8c8 h2h3 g4e6 e4d5 e6d5 c4d5 d7c5 d2c4 d8d5 c4a5 b6a5 e1g1 e8g8 c1e3 c5d3 a1d1 d3e5 f3e5 g7e5 c3a5 d5e4 f1e1 f8d8 d1d8 c8d8 e3c5 e4c2 c5e7 d8d1 e7b4 e5d4 e1d1 c2d1 b4e1 d1e2 a3a4 e2e4 a5b4 e4h4 g1f1 h4f4 b4d2 f4e5 f2f3 g8g7 d2d3 e5c5 e1d2 g7g8 d2h6 c5d6 d3e4 d6d8 f1e2 d4b6 g2g3 b6c5 h6e3 c5b6 e4e5 f7f6 e5e6 g8g7 h3h4 h7h6 g3g4 h6h5 g4h5 g6h5 f3f4 b6d4 f4f5 d4e3 e6e3 d8d5 e3a7 d5e4 e2d2 e4f4 a7e3 f4b4 d2e2 b4g4 e2d3 g4f5 d3c3 g7f7 e3d3 f5e5 d3d4 e5e1 c3c4 f7g7 c4d5 e1h1 d5c5 h1c1 d4c4 c1g1 c5c6 g1g4 c4b3 g4h4 c6c7 h4f4 c7b7 h5h4 b5b6 f4g5 b3e6 g5h5 b7a6 h5d1 b6b7 d1a4 a6b6 a4b4 b6c7 b4a5 e6b6 a5c3 b6c6 c3a5 c7c8 a5f5 c6d7 g7g6 b7b8q f5c5 b8c7 c5f8 d7d8 f8d8 c8d8 f6f5 c7f4 g6f6 f4h4 f6e5 d8e7 f5f4 h4h5 e5e4 h5e2 e4d5 e2f3 d5e5 f3d3 f4f3 d3f3 e5d4 e7d6 d4c4 f3f4 c4c3 d6c5 c3d3 c5b4 d3c2 b4c4 c2d1 f4f2 d1c1 c4c3 c1b1 f2b2 a1a1 "
            'replaylist = "b1c3 d7d5 g1f3 d5d4 c3e4 g8f6 e4f6 e7f6 e2e4 d4e3 f2e3 b8c6 d2d4 f8e7 f1d3 c6b4 e1g1 e8g8 e3e4 b4d3 c2d3 f6f5 c1d2 b7b6 e4e5 c8b7 d1a4 a7a5 a1c1 b7d5 g1h1 c7c6 h2h3 d8d7 d2g5 e7g5 f3g5 f7f6 g5f3 f5f4 h1h2 d7e6 f1e1 f8e8 e1f1 a8c8 c1c3 e6f5 h2g1 f5g6 f1f2 g6g3 c3c2 e8e6 c2c1 f6e5 h3h4 e6g6 h4h5 g6g4 g1f1 b6b5 a4d1 e5d4 d1e1 g8f8 e1e5 c8e8 e5d6 f8g8 c1e1 e8f8 e1e7 h7h6 a2a4 d5f3 g2f3 g4g5 d6c6 g3g1 f1e2 g1b1 a4b5 g5g1 e7g7 g8g7 c6d7 f8f7 d7d4 g7g8 d4d8 g8h7 d8g8 h7g8 f2f1 g1f1 b2b3 b1d1 a1a1 "
            'replaylist = "b1c3 d7d5 g1f3 d5d4 "
            'replaylist = "(none) a1a1 b1c3 d7d5 d2d4 g8f6 c1f4 e7e6 e2e3 b8c6 g1f3 f8d6 f4d6 c7d6 f1b5 e8g8 e1g1 c8d7 b5c6 d7c6 b2b3 c6d7 d1d3 d8c7 f1c1 f8c8 c3e2 e6e5 d3d1 b7b5 e2g3 e5e4 f3h4 g7g6 d1d2 c7c3 d2e2 a7a5 a1b1 b5b4 h2h3 g8g7 e2d1 c3c6 a2a3 b4a3 b1a1 a5a4 a1a3 a4b3 a3b3 a8a2 d1e2 a2c2 e2c2 c6c2 c1c2 c8c2 b3b6 d7c6 b6b8 f6d7 b8c8 g7f6 f2f4 h7h6 g1h1 d7b6 c8c7 c6a4 c7c2 a4c2 h1g1 b6c4 g1f2 c2d3 f2e1 c4e3 e1d2 e3c4 d2e1 c4a3 e1d2 f6e6 d2d1 a3c2 d1d2 c2d4 d2c3 d4b5 c3d2 d5d4 d2e1 e6d5 g3h1 d3c4 h1f2 h6h5 f2d1 b5c3 d1b2 c4b5 g2g4 c3e2 g4h5 g6h5 f4f5 e2f4 b2d1 e4e3 d1b2 d5e4 b2d1 f4d3 e1f1 d3f2 f1g2 f2d1 h4f3 d4d3 f5f6 d1c3 f3g5 e4f4 g5f7 d3d2 f7h8 d2d1q h8g6 f4g5 g6e7 d1d2 g2h1 e3e2 h3h4 g5g4 h1g1 e2e1q a1a1 "
            'replaylist = "a1a1 (non b1c3 d7d5 d2d4 g8f6 c1f4 e7e6 e2e3 f8b4 f1d3 e8g8 g1f3 f6h5 f4g5 h5f6 e1g1 b8c6 f3e5 h7h6 g5h4 b4e7 e5c6 b7c6 d1f3 a8b8 b2b3 c6c5 a2a3 c5d4 e3d4 c7c5 h4g3 b8a8 g3e5 c5d4 e5d4 c8d7 f3g3 a8c8 b3b4 g8h8 f1e1 d7c6 d4a7 e7d6 f2f4 f6h5 g3g4 h5f4 a7d4 f8g8 g2g3 f4d3 c2d3 c6d7 g4f3 e6e5 e1e5 d6e5 d4e5 d7e6 a1e1 g8e8 e5d4 f7f6 g1h1 d8d6 e1e2 h8h7 d4c5 d6d7 f3f4 d5d4 f4d4 d7d4 c5d4 c8c3 d4c3 e6d5 e2e4 f6f5 h1g2 f5e4 d3e4 e8e4 g2f2 e4c4 c3d2 c4c2 f2e3 d5c6 h2h4 c2b2 e3d3 b2b3 d3d4 b3g3 d4c5 c6e8 b4b5 e8b5 c5b5 g3a3 b5c5 a3h3 d2e1 h7g6 e1f2 g6f5 c5d5 g7g5 h4g5 h6g5 f2c5 h3d3 d5c4 f5e4 c5e7 g5g4 e7c5 g4g3 c4b4 g3g2 c5g1 d3d1 g1f2 g2g1q f2g1 d1g1 b4c5 g1g6 c5c4 g6g5 c4c3 g5c5 c3b4 e4d4 b4b3 c5c1 b3b2 c1c4 b2b3 d4d3 b3b2 c4b4 b2a3 d3c3 a3a2 b4b5 a2a1 c3c2 a1a2 b5a5 a1a1 "
            g = GetEngineResponse(opp) 'request a message from the engine
            begPtr = endPtr
            endPtr = InStr(begPtr + 1,replayMoves," ")
            If endPtr = 0 Then
                endPtr = begPtr
            EndIf
            sRet = Mid(replayMoves,begPtr + 1,endPtr - begPtr - 1)
            If endPtr = Len(replayMoves) Then
                replayFlag = 0
                timeRemind = Timer
                pCon("FENs n ",UBound(fen))
            EndIf

    End Select

    If full Then ' don't edit the message
        replayFlag = repmerk
        Return sRet
    EndIf

    For x = 1 To 2
        If Left(sRet,4) = Left(matesign(x),4) Then
            Return "mate"
        EndIf
    Next

    Select Case Mid(sRet,5,1)
        Case "q","b","n","r" 'pawn promotion
            sRet = Left(sRet,5) 'clip string to 5 characters
        Case Else
            sRet = Left(sRet,4) 'clip string to 4 characters
    End Select

    Return sRet 'send the move to the gui

End Function

Function GetEngineResponse(opp As String) As String
    Dim As Integer iTotalBytesAvail, iNumberOfBytesWritten, iBytesToRead
    Dim As String sRet = "", sBuf

    Const As Integer MaxBytesToRead = 4096 'maximum number of bytes to be returned at one 'ReadFile'-operation

    Do
        Scan

        sBuf = "" 'clear buffer

        'look if there's any data in the pipe
        Select Case opp 'choose engine
            Case "white"
                PeekNamedPipe(hReadPipeWhite,NULL,NULL,NULL,@iTotalBytesAvail,NULL)
            Case "black"
                PeekNamedPipe(hReadPipeBlack,NULL,NULL,NULL,@iTotalBytesAvail,NULL)
        End Select

        If iTotalBytesAvail Then 'pipe is not empty
            If iTotalBytesAvail < MaxBytesToRead Then
                iBytesToRead = iTotalBytesAvail 'set all available bytes to be read
            Else
                iBytesToRead = MaxBytesToRead 'set the first 4096 bytes to be read
            EndIf
            sBuf = String(iBytesToRead,Chr(0)) 'set the length of the buffer string to the necessary value

            'read the specified amount of bytes from the pipe
            Select Case opp 'choose engine
                Case "white"
                    ReadFile(hReadPipeWhite,StrPtr(sBuf),iBytesToRead,@iNumberOfBytesWritten,NULL)
                Case "black"
                    ReadFile(hReadPipeBlack,StrPtr(sBuf),iBytesToRead,@iNumberOfBytesWritten,NULL)
            End Select

            sRet += sBuf 'add the buffer to the return string
            Sleep 1
        Else 'pipe is empty
            Exit Do 'return
        EndIf
    Loop

    If replayFlag <> 1 Then
        Open ExePath + "\ucilog.txt" For Append As #3
        Print #3, ""
        Print #3, "RECEIVE FROM: ";opp
        Print #3, sRet;"*"
        Print #3, "----------"
        Close 3
    EndIf
    If InStr(sRet,"currmove") Then
        Locate 27,11
        Print Mid(sRet,InStr(sRet,"currmove")+9,4)
    EndIf


    Return sRet
End Function

Sub WriteEngineInfo(opp As String, s As String)
    Dim As Integer iNumberOfBytesWritten
    Dim As String sBuf

    sBuf = s + Chr(10)

    If replayFlag <> 1 Then
        Open ExePath + "\ucilog.txt" For Append As #3
        Print #3,""
        Print #3, "SEND TO: ";opp
        Print #3, s
        Print #3, "----------"
        Close 3
    EndIf

    'send the command string to the engine
    Select Case opp 'choose engine
        Case "white"
            WriteFile(hWritePipeWhite,StrPtr(sBuf),Len(sBuf),@iNumberOfBytesWritten,NULL)
        Case "black"
            WriteFile(hWritePipeBlack,StrPtr(sBuf),Len(sBuf),@iNumberOfBytesWritten,NULL)
    End Select

End Sub

Sub SetTitleBar
    Dim As String text

    'set the text of the screen window
    text = Left(UCase(wt.opponent),1) + " " + wt.move + " " + wt.depth
    WindowTitle(text)

End Sub

Sub CloseEngines

    TerminateProcess(hProcessHandleWhite, @ExitCode)
    TerminateProcess(hProcessHandleBlack, @ExitCode)
    CloseHandle(hWritePipeBlack)
    CloseHandle(hReadPipeBlack)

End Sub

Function makeFen() As String
    Dim As Integer x, col, lin, countFree, first, last
    Dim As String fenPcs, g

    For col = 2 To 9 'column
        For lin = 2 To 9 'line
            'convert internal board to fen-string
            Select Case board(lin,col)
                Case 0 'free
                    fenpcs += "0"
                Case 1 'white pawn
                    fenpcs += "P"
                Case 2 'white rook
                    fenpcs += "R"
                Case 3 'white knight
                    fenpcs += "N"
                Case 4 'white bishop
                    fenpcs += "B"
                Case 5 'white queen
                    fenpcs += "Q"
                Case 6 'white king
                    fenpcs += "K"
                Case -1 'black pawn
                    fenpcs += "p"
                Case -2 'black rook
                    fenpcs += "r"
                Case -3 'black knight
                    fenpcs += "n"
                Case -4 'black bishop
                    fenpcs += "b"
                Case -5 'black queen
                    fenpcs += "q"
                Case -6 'black king
                    fenpcs += "k"
            End Select
        Next
        fenpcs += "/"
    Next

    'compress fen-string
    countFree = 0
    g = ""
    For x = 1 To Len(fenpcs)
        If Mid(fenpcs,x,1) = "0" Then
            countFree += 1
        Else
            If countFree Then
                g += Str(countFree)
                countFree = 0
            EndIf
            g += Mid(fenpcs,x,1)
        EndIf
    Next

    fenpcs = Left(g,Len(g) - 1) + " " + Left(opponent,1) 'add opponent

    If Len(castlingFlag) Then 'castling
        fenpcs += " " + castlingFlag
    Else
        fenpcs += " -"
    EndIf

    If Abs(pchoice) = 1 Then 'add en passant information
        Select Case move
            Case "a2a4"
                fenpcs += " a3"
            Case "b2b4"
                fenpcs += " b3"
            Case "c2c4"
                fenpcs += " c3"
            Case "d2d4"
                fenpcs += " d3"
            Case "e2e4"
                fenpcs += " e3"
            Case "f2f4"
                fenpcs += " f3"
            Case "g2g4"
                fenpcs += " g3"
            Case "h2h4"
                fenpcs += " h3"
            Case "a7a5"
                fenpcs += " a6"
            Case "b7b5"
                fenpcs += " b6"
            Case "c7c5"
                fenpcs += " c6"
            Case "d7d5"
                fenpcs += " d6"
            Case "e7e5"
                fenpcs += " e6"
            Case "f7f5"
                fenpcs += " f6"
            Case "g7g5"
                fenpcs += " g6"
            Case "h7h5"
                fenpcs += " h6"
            Case Else
                fenpcs += " -"
        End Select
    Else
        fenpcs += " -"
    EndIf

    fenpcs += " " + Str(count50) + " " + Str(moveCount) 'add counters

    Return fenpcs

End Function

Sub PrintMoveTable
    Dim As Integer x, listlen

    listlen = UBound(movetable)
    If listlen > 42 Then
        listlen = 42
    EndIf
    For x = 1 To listlen
        Locate 46 - listlen + x , 63
        Print movetable(UBound(movetable) - listlen + x)
    Next

End Sub

Function deleteFromString(text As String, del As String) As String
    Dim As String g
    Dim As Integer x, y

    For x = 1 To Len(text)
        If InStr(Mid(text,x,1), Any del) = 0 Then
            g += Mid(text,x,1)
        EndIf
    Next

    Return g

End Function

Sub fenToBoard(fen As String)
    Dim As Integer x, y, i, row, col
    Dim As String opp, g

    row = 2
    col = 1

    For x = 1 To InStr(fen," ") -1
        Select Case Mid(fen,x,1)
            Case "1" To "8" 'empty field(s)
                i = Val(Mid(fen,x,1))
                For y = 1 To i
                    board(col + y, row) = 0 'empty field
                Next
                col += i
            Case "/" 'next row
                row += 1
                col = 1
            Case Else
                col += 1 'next column
                board(col,row) = InStr("PRNBQKprnbqk",Mid(fen,x,1)) 'put piece to field
                If board(col,row) > 6 Then 'black piece
                    board(col,row) = -1 * (board(col,row) - 6) 'convert sign
                EndIf
        End Select
    Next
    x += 1
    opp = Mid(fen,x,1)
    If opp = "w" Then
        opponent = w
    Else
        opponent = b
    EndIf
    x += 2
    y = InStr(x+1,fen," ")
    castlingFlag = Mid(fen,x,y-x)
    x = y + 1
    y = InStr(x+1,fen," ")
    x = y + 1
    y = InStr(x+1,fen," ")
    count50 = Val(Mid(fen,x,y-x))
    x = y + 1
    y = InStr(x+1,fen," ")
    moveCount = Val(Mid(fen,x,y-x))

End Sub

Sub showInternalBoard()
    Dim As Integer col, row

    Locate 50,1
    Print "    2 3 4 5 6 7 8 9"
    For row = 2 To 9 'row
        Print 10-row;"|";
        For col = 2 To 9 'column
            Print board(col,row);
        Next
        Print "|";row
    Next
    Print "    A B C D E F G H"

End Sub

Sub pCon(t As String = "",text As String)
    'print to console window
    Dim kf As Integer = FreeFile
    Open Cons For Output As #kf
    Print #kf, t;
    Print #kf, text
    Close kf
End Sub
Sub pCon(text As String)
    pCon("",text)
End Sub
Sub pCon(x As Integer)
    pCon("",Str(x))
End Sub
Sub pCon(t As String = "",x As Integer)
    pCon(t,Str(x))
End Sub

Function checkForStale() As Integer

Dim As Integer x, col, row, drow, dcol, kingrow, kingcol, kingsig

    ScreenLock
    update
    Scan
    ScreenUnLock

    'set Sgn of the mated king
    If opponent = w Then
        kingsig = 1
    Else
        kingsig = -1
    EndIf

    'get the internal coordinates of the mated king
    For row = 2 To 9
        For col = 2 To 9
            If board(col,row) = kingsig * 6 Then 'mated king found
                kingrow = row
                kingcol = col
                Exit For,For 'terminate searching
            EndIf
        Next
    Next

    'let the mated king look around
    For dcol = -1 To 1 'left -> rest -> right
        For drow = -1 To 1 'up -> rest -> down
            col = kingcol 'start at king coordinates
            row = kingrow
            Do 'look along the desired direction
                col += dcol 'next field
                row += drow
                If board(col,row) Then 'field not empty
                    If (board(col,row) = 7) Or (Sgn(board(col,row)) = kingsig) Then 'border or piece of own colour
                        Exit Do 'next direction
                    EndIf
                    Select Case Abs(board(col,row)) 'kind of piece
                        Case 1 'pawn
                            If (Abs(kingcol - col) = 1) And ((kingrow - row) = kingsig) Then 'check by pawn
                                '? "check by pawn "
                                Return 0
                            Else
                                Exit Do 'next direction
                            EndIf
                        Case 2 'rook
                            If (dcol = 0) Or (drow = 0) Then    'mated king is looking straight
                                '? "check by rook "
                                Return 0
                            EndIf
                        Case 4 'bishop
                            If (dcol <> 0) And (drow <> 0) Then 'mated king is looking diagonal
                                '? "check by bishop "
                                Return 0
                            EndIf
                        Case 5 'queen
                            '? "check by queen "
                            Return 0
                    End Select
                EndIf
            Loop
        Next
    Next

    Restore knightCheck
    For x = 1 To 8
        Read dcol, drow
        If Abs(board(kingcol + dcol, kingrow + drow)) = 3 Then 'knight
            '? "check by knight "
            Return 0
        EndIf
    Next

    Return 1 'stalemate

End Function

#Macro PrintMenuItem()

    Color foreground, background 'normal colours
    compareColor = foreground + 16 * background
    PrintMenuItemMain()

#EndMacro

#Macro PrintMenuItemInv()

    Color background, foreground 'inverse colours
    compareColor = background + 16 * foreground
    PrintMenuItemMain()

#EndMacro

#Macro PrintMenuItemMain()

    For x = 1 To Len(text)
    If (Screen(lin,col - 1 + x,0) <> Asc(Mid(text,x,1))) Or _
         (Screen(lin,col - 1 + x,1) <> compareColor) Then 'only print if necessary
        Locate lin, col, 0 'adjust menu item to separator
        Print text
        Exit For
    EndIf
    Next

#EndMacro

Sub mouseMenu(text As String, separator As String, lin As Integer = 0, col As Integer = 0, _
                  foreground As UInteger, background As UInteger, mode As Integer = 0)
  'mode 0 -> highlight at touch with cursor
  'mode 1 -> highlight at click

  Dim As Integer mc, ml, wheel, buttons, textmin, textmax, x, compareColor, separatorpos

  If lin = 0 Then
    lin = CsrLin
  EndIf
  If col = 0 Then
    col = Pos
  EndIf

  If separator = "" Then
    separatorpos = Len(text) 'whole text as return value
  Else
    separatorpos = InStr(text,separator) - 1 'text left from separator as return value
    col = col - separatorpos + 1 'position text at separator
  EndIf

  If col < 1 Then
    col = 1
  EndIf

  textmin = col - 2
    textmax = textmin + Len(text) + 1

    GetMouse (mc,ml,wheel,buttons)
  mc = mc / 8 'text column
  ml = ml / 8 'text line

  menuitemhit = 0
  Select Case mode
    Case 0 'highlight when touching
        If ml + 1 = lin Then 'mouse line = text line
            Select Case mc
                Case textmin To textmax 'cursor touches the text
                    menuitemhit = 1
                    PrintMenuItemInv() 'highlight menu item
                    If (buttons And 1) Then 'left mouse button pressed
                        Do 'wait for release of the mouse button
                            GetMouse (mc,ml,wheel,buttons)
                        Loop While buttons
                        menuitem = Trim(Left(text,separatorpos)) 'isolate menu item and write to global variable
                    EndIf
                    Return
            End Select
        EndIf
    Case 1 'highlight at click
        If (buttons And 1) Then 'linke mouse button pressed
            If ml + 1 = lin Then 'mouse line = text line
                Select Case mc
                    Case textmin To textmax 'cursor touches the text
                        PrintMenuItemInv() 'highlight menu item
                        Do 'wait for release of the mouse button
                            GetMouse (mc,ml,wheel,buttons)
                        Loop While buttons
                        menuitem = Trim(Left(text,separatorpos)) 'isolate menu item and write to global variable
                        Return
                End Select
            EndIf
        EndIf
  End Select

  PrintMenuItem()

End Sub

Sub continueTurnament()
    Dim As String tl(2,20)
    Dim As Integer filepointer(2)
    Dim As String g
    Dim As Integer ff, x
    Dim As Double stampCompare

    ff = FreeFile
    Open ExePath + "\turnamentlog.txt" For Input As ff

    Do 'find and read the entries of the last 2 games
        Line Input #ff, g
        For x = 1 To UBound(tl,2) 'carry over the last game entry
            tl(1,x) = tl(2,x)
            tl(2,x) = ""
        Next
        filepointer(1) = filepointer(2)
        tl(2,1) = g
        x = 1
        Do 'get new game entry
            x += 1
            Line Input #ff, tl(2,x)
        Loop Until tl(2,x) = "" 'game entry complete
        filepointer(2) = Seek(ff)
    Loop Until EOF(ff)

    Close ff

    'game number
    gameCount = Val(Mid(tl(1,1),InStrRev(tl(1,1)," ") + 1)) 'last finished game

    'check if the last game was uncompleted
    If tl(2,6) = "" Then 'uncompleted
        'cleanup turnamentlog
        Open ExePath + "\turnamentlog.txt" For Binary As ff
        g = Input(filepointer(1)-3, ff)
        Close ff
        Open ExePath + "\turnamentlog.txt" For Output As ff
        Print #ff, g;
        Close ff
        replayFlag = 2
        'replayMoves = "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 c2c4 d5f6 g1f3 c8g4 f1e2 e7e6 d1b3 b7b6 b1c3 f8e7 c1e3 g4h5 b3b5 c7c6 b5a4 d8c7 e1g1 e8g8 h2h3 b8d7 f1e1 a7a6 a1c1 f8d8 a4b3 a8c8 a2a3 e7d6 b3a4 b6b5 a4b3 b5c4 b3c4 c8b8 c3a4 d7b6 a4b6 b8b6 d4d5 b6b2 d5e6 f7e6 e3d4 b2b7 f3g5 h5f7 g5e6 c7d7 e6d8 f7c4 e2c4 f6d5 d8b7 d7b7 c1b1 b7f7 g2g3 g8f8 b1b6 f7c7 b6a6 c7c8 g1g2 g7g5 a3a4 h7h5 a6a7 d5c7 d4e5 d6e5 e1e5 c8b8 a7a5 g5g4 h3g4 h5g4 e5e4 c7d5 c4d5 c6d5 a5d5 b8b7 d5f5 f8g7 f5g5 g7f6 g5g4 b7d5 g4h4 f6g7 g2g1 d5d1 g1h2 d1d8 e4e6 d8d2 "
        'replayMoves = "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 c2c4 d5f6 g1f3 c8g4 f1e2 e7e6 d1b3 b7b6 b1c3 f8e7 c1e3 g4h5 b3b5 c7c6 b5a4 d8c7 e1g1 e8g8 h2h3 b8d7 f1e1 a7a6 a1c1 f8d8 a4b3 a8c8 a2a3 e7d6 b3a4 b6b5 a4b3 b5c4 b3c4 c8b8 c3a4 d7b6 a4b6 b8b6 d4d5 b6b2 d5e6 f7e6 e3d4 b2b7 f3g5 h5f7 g5e6 c7d7 e6d8 f7c4 e2c4 f6d5 d8b7 d7b7 c1b1 b7f7 g2g3 g8f8 b1b6 f7c7 b6a6 c7c8 g1g2 g7g5 a3a4 h7h5 a6a7 d5c7 d4e5 d6e5 e1e5 c8b8 a7a5 g5g4 h3g4 h5g4 e5e4 c7d5 c4d5 c6d5 a5d5 b8b7 d5f5 f8g7 f5g5 g7f6 g5g4 b7d5 g4h4 f6g7 g2g1 d5d1 g1h2 d1d8 e4e6 d8d2 h2g2 d2g5 h4e4 g5d5 e6e5 d5d3 e5e7 g7f8 a4a5 f8g8 e7e8 g8g7 e4e7 g7g6 a5a6 d3d5 e7e4 d5a2 e8e6 g6f7 e6e7 f7f6 e4e6 f6f5 a6a7 a2d5 e6e4 f5g6 e7e8 d5c6 a7a8q c6a8 e8a8 g6f5 a8a4 f5g6 a4a6 g6f7 e4b4 f7f8 b4b7 f8e8 "
        'replayMoves = "e2e4 d7d5 e4d5 g8f6 d2d4 f6d5 "

        'check for game stamp
        replayMoves = ""
        Open ExePath + "\moveslog.txt" For Binary As ff
        Input #ff, g
        gameStamp = Val(Mid(tl(2,2),7))
        pCon("gameStamp ",gameStamp)
        If Val(g) = gameStamp Then
            Input #ff, replayMoves
        EndIf
        replayMoves += " "
        Close ff
        If Len(replayMoves) = 1 Then 'no moves done yet in the last game
            replayFlag = 0
        EndIf
    Else 'start the next (new) game
        For x = 1 To UBound(tl,2) 'carry over the last game entry
            tl(1,x) = tl(2,x)
        Next
    EndIf
    Close ff

    'extract informations from logfile and set variables
    'game counter
    x = 0
    Do
        x += 1
    Loop Until Left(tl(1,x),5) = "game "
    gameCount = Val(Mid(tl(1,x),6))

    'engine files
    x = 0
    Do
        x += 1
    Loop Until Left(tl(1,x),6) = "white "
    g = tl(1,x)
    engine(1) = Mid(g,InStrRev(g," ") + 1)
    g = tl(1,x + 1)
    engine(2) = Mid(g,InStrRev(g," ") + 1)
    If Frac(gameCount/2) = 0 Then 'odd game number --> white = engine 1
        Swap engine(1),engine(2)
    EndIf

    'result counters
    x = 0
    Do
        x += 1
    Loop Until Left(tl(1,x),10) = "total won "
    winEngine(1) = Val(Mid(tl(1,x),InStrRev(tl(1,x)," ") + 1))
    winEngine(2) = Val(Mid(tl(1,x + 1),InStrRev(tl(1,x + 1)," ") + 1))
    drawnGames = Val(Mid(tl(1,x + 2),InStrRev(tl(1,x + 2)," ") + 1))

    'playmode
    x = 0
    Do
        x += 1
    Loop Until Left(tl(1,x),5) = "mode "
    'g = tl(2,x)
    g = tl(1,x)
    g = LTrim(Mid(g,InStr(g," "))) 'delete 1st item ("mode")
    playmode = Left(g,InStr(g," ") - 1) 'get playmode keyword (2nd item)
    g = LTrim(Mid(g,InStr(g," "))) 'delete 1st item (playmode keyword)
    pCon("playmode ",playmode)
    Select Case playmode
        Case "movetime"
            moveTimePreset = Val(Left(g,InStr(g," ") - 1))
            g = LTrim(Mid(g,InStr(g," "))) '1st space
            g = LTrim(Mid(g,InStr(g," "))) '2nd space
            g = Trim(g, Any " )")
            moveTimeHandicap = Val(Trim(g, Any " )"))
            moveTime(1) = moveTimePreset + moveTimeHandicap * (winEngine(2) - winEngine(1))
            moveTime(2) = moveTimePreset + moveTimeHandicap * (winEngine(1) - winEngine(2))
            Open ExePath + "\timelog.txt" For Input As #6
            Input #6, stampCompare
            If stampCompare = gameStamp Then 'logged times belong to the actual game --> restore times
                Input #6, timePlayed(1)
                Input #6, timePlayed(2)
                pCon ("timePlayed 1 ",timePlayed(1))
                pCon ("timePlayed 2 ",timePlayed(2))
            Else 'new game --> reset clock
                timePlayed(1) = 0
                timePlayed(2) = 0
            EndIf
            Close 6
        Case "depth"

        Case "gametime"
            gameTimePreset = Val(Left(g,InStr(g," ") - 1))
            g = LTrim(Mid(g,InStr(g," "))) 'delete 1st item (<gametime>)
            g = Trim(g, Any "( )") 'delete brackets
            gameTimeHandicap = Val(g)
            'set the game times with the actual handicap
            gameTime(1) = gameTimePreset + gameTimeHandicap * (winEngine(2) - winEngine(1))
            gameTime(2) = gameTimePreset + gameTimeHandicap * (winEngine(1) - winEngine(2))
            Open ExePath + "\timelog.txt" For Input As #6
            Input #6, stampCompare
            If stampCompare = gameStamp Then 'logged times belong to the actual game --> restore times
                Input #6, timeLeft(1)
                Input #6, timeLeft(2)
            Else 'new game with full time amount
                timeLeft(1) = gameTime(1) * 1000
                timeLeft(2) = gameTime(2) * 1000
            EndIf
            Close 6
            timeRemind = Timer

    End Select

End Sub

Sub replayGame()
    ReDim As Integer filepointer(1)
    Dim As Integer ff, gamemax, x, gameNumber
    Dim As String g

    Cls
    Locate 15,20
    Print "**********  R E P L A Y  **********"

    ff = FreeFile
    Open ExePath + "\turnamentlog.txt" For Input As ff
    Do
        Line Input #ff, g
        If Left(g,5) = "game " Then
            x = Val(Mid(g,6))
            If x > gamemax Then
                gamemax = x
                ReDim Preserve filepointer(x)
                filepointer(x) = Seek(ff)
            Else
                gamemax = x
                ReDim filepointer(x)
                filepointer(x) = Seek(ff)
            EndIf
        EndIf
    Loop Until EOF(ff)

    Locate 20,20,1
    Print x
    Input "Game number ",gameNumber
    Seek ff,filepointer(gameNumber)
    For x = 1 To 6
        Line Input #ff, replayMoves
    Next
    Line Input #ff, g
    g = Trim(g,"*")
    replayMoves += " " + g + " "
    replayFlag = 1
    gameCount = gameNumber

End Sub

Sub setup
    Dim As Integer mencol, menlin, x, jump
    Dim As String keypressed, filename
    ReDim As String enginelist(1)

    'write available engines to array
    x = 1
    ReDim enginelist(x)
    enginelist(x) = Dir(ExePath + "\engines\*.*", -1)
    Do
        x += 1
        ReDim Preserve enginelist(x)
        enginelist(x) = DIR("", -1)
    Loop While Len(enginelist(x))

    Do 'setup menu loop
        If jump = 0 Then
            Cls
            Locate 15,20
            Print "**********  S E T U P  **********"
            mencol = 25
            menlin = 20
            jump = 1
        EndIf

        keypressed = Inkey
        menuitem = ""

        mouseMenu(" 1 = Engine 1 (" + engine(1) + ")","=",menlin,mencol,cfont,cback)
        mouseMenu(" 2 = Engine 2 (" + engine(2) + ")","=",menlin + 2,mencol,cfont,cback)
        mouseMenu(" P = Playmode (" + playmode + ")","=",menlin + 4 ,mencol,cfont,cback)

        mouseMenu(" Esc = Return to main menu ","=",menlin + 10,mencol,cfont,cback)

        Select Case menuitem 'convert menuitem to keystroke
            Case ""
                    'do nothing
            Case "Esc"
                keypressed = Chr(27)
            Case Else
                keypressed = LCase(menuitem) 'key
        End Select

        Select Case keypressed
            Case "1" 'engine 1
                Cls
                Locate 15,20
                Print         "**********  S E T U P  **********"
                Print
                Print Tab(29);"CHOSE ENGINE 1"
                Do
                    keypressed = InKey
                    menuitem = ""
                    For x = 3 To UBound(enginelist) - 1
                        mouseMenu(Str(x-2) + " - " + enginelist(x),"-",15 + 2*x,25,cfont,cback)
                    Next
                    mouseMenu("Esc = Return to setup menu","=",15 + 2*(x),25,cfont,cback)
                    Color cfont,cback

                    Select Case menuitem 'convert menuitem to keystroke
                        Case ""
                                'do nothing
                        Case "Esc"
                            keypressed = Chr(27)
                        Case Else
                            keypressed = menuitem 'key
                    End Select

                    Select Case keypressed
                        Case "1" To Str(UBound(enginelist)-3)
                            engine(1) = enginelist(Val(keypressed) + 2)
                            WritePrivateProfileString("","engine1",StrPtr(engine(1)),StrPtr(iniFile))
                            jump = 0
                            Exit Do
                        Case Chr(27)
                            jump = 0
                            Exit Do
                        Case Chr(255,107) 'end program
                            End
                    End Select
                Loop

            Case "2" 'engine 2
                Cls
                Locate 15,20
                Print         "**********  S E T U P  **********"
                Print
                Print Tab(29);"CHOSE ENGINE 2"
                Do
                    keypressed = InKey
                    menuitem = ""
                    For x = 3 To UBound(enginelist) - 1
                        mouseMenu(Str(x-2) + " - " + enginelist(x),"-",15 + 2*x,25,cfont,cback)
                    Next
                    mouseMenu("Esc = Return to setup menu","=",15 + 2*(x),25,cfont,cback)
                    Color cfont,cback

                    Select Case menuitem 'convert menuitem to keystroke
                        Case ""
                                'do nothing
                        Case "Esc"
                            keypressed = Chr(27)
                        Case Else
                            keypressed = menuitem 'key
                    End Select

                    Select Case keypressed
                        Case "1" To Str(UBound(enginelist)-3)
                            engine(2) = enginelist(Val(keypressed) + 2)
                            WritePrivateProfileString("","engine2",StrPtr(engine(2)),StrPtr(iniFile))
                            jump = 0
                            Exit Do
                        Case Chr(27)
                            jump = 0
                            Exit Do
                        Case Chr(255,107) 'end program
                            End
                    End Select
                Loop

            Case "p" 'playmode
                Cls
                Locate 15,20
                Print         "**********  S E T U P  **********"
                Print
                Print Tab(29);"PLAYMODE"
                Do
                    keypressed = InKey
                    menuitem = ""

                    If playmode = "movetime" Then
                        mouseMenu(">>> M = Movetime <<<","=",20,25,cfont,cback)
                    Else
                        mouseMenu("    M = Movetime    ","=",20,25,cfont,cback)
                    EndIf
                    mouseMenu(" 1 = Movetime (" + Str(moveTimePreset) + " ms) ","=",22,27,cfont,cback)
                    mouseMenu(" 2 = Movetime Handicap (" + Str(moveTimeHandicap) + " ms) ","=",24,27,cfont,cback)

                    If playmode = "depth" Then
                        mouseMenu(">>> D = Depth <<<","=",26,25,cfont,cback)
                    Else
                        mouseMenu("    D = Depth    ","=",26,25,cfont,cback)
                    EndIf
                    mouseMenu(" 3 = Depth (" + Str(depthPreset) + ") ","=",28,27,cfont,cback)
                    mouseMenu(" 4 = Depth Handicap (" + Str(depthHandicap) + ") ","=",30,27,cfont,cback)

                    If playmode = "gametime" Then
                        mouseMenu(">>> T = Gametime <<<","=",32,25,cfont,cback)
                    Else
                        mouseMenu("    T = Gametime    ","=",32,25,cfont,cback)
                    EndIf
                    mouseMenu(" 5 = Gametime (" + Str(gameTimePreset) + " s) ","=",34,27,cfont,cback)
                    mouseMenu(" 6 = Gametime Handicap (" + Str(gameTimeHandicap) + " s) ","=",36,27,cfont,cback)

                    mouseMenu(" Esc = Return to setup menu ","=",38,25,cfont,cback)
                    Color cfont,cback

                    Select Case menuitem 'convert menuitem to keystroke
                        Case ""
                                'do nothing
                        Case "Esc"
                            keypressed = Chr(27)
                        Case Else
                            keypressed = LCase(Trim(menuitem,Any "> ")) 'key
                    End Select

                    Select Case keypressed
                        Case "m" 'playmode
                            playmode = "movetime"
                            WritePrivateProfileString("","playmode","movetime",StrPtr(iniFile))
                        Case "1" 'moveTimePreset
                            View Print 40 To 40
                            Locate 40,20
                            Input "Movetime (ms): ",moveTimePreset
                            WritePrivateProfileString("","moveTimePreset",Str(moveTimePreset),StrPtr(iniFile))
                            Cls
                            View Print
                        Case "2" 'moveTimeHandicap
                            View Print 40 To 40
                            Locate 40,20
                            Input "movetime handicap(ms): ",moveTimeHandicap
                            WritePrivateProfileString("","moveTimeHandicap",Str(moveTimeHandicap),StrPtr(iniFile))
                            Cls
                            View Print
                        Case "d" 'depth
                            playmode = "depth"
                            WritePrivateProfileString("","playmode","depth",StrPtr(iniFile))
                        Case "3" 'depthpreset
                            View Print 40 To 40
                            Locate 40,20
                            Input "depth: ",depthPreset
                            WritePrivateProfileString("","depthPreset",Str(depthPreset),StrPtr(iniFile))
                            Cls
                            View Print
                        Case "4" 'increase depth
                            View Print 40 To 40
                            Locate 40,20
                            Input "depth handicap: ",depthHandicap
                            WritePrivateProfileString("","depthHandicap",Str(depthHandicap),StrPtr(iniFile))
                            Cls
                            View Print
                        Case "t" 'time amount
                            playmode = "gametime"
                            WritePrivateProfileString("","playmode","gametime",StrPtr(iniFile))
                        Case "5"
                            View Print 40 To 40
                            Locate 40,20
                            Input "gametime (seconds): ",gameTimePreset
                            WritePrivateProfileString("","gameTimePreset",Str(gameTimePreset),StrPtr(iniFile))
                            Cls
                            View Print
                        Case "6"
                            View Print 40 To 40
                            Locate 40,20
                            Input "gametime handicap(seconds): ",gameTimeHandicap
                            WritePrivateProfileString("","gameTimeHandicap",Str(gameTimeHandicap),StrPtr(iniFile))
                            Cls
                            View Print
                        Case Chr(27)
                            jump = 0
                            Exit Do
                        Case Chr(255,107) 'end program
                            End
                    End Select
                Loop
            Case Chr(27)
                Exit Do
            Case Chr(255,107) 'end program
                End
        End Select
    Loop

End Sub

Function timeFormat (seconds As Double, mode As Integer = 0) As String

  Dim As Integer milliseconds, hours, minutes, secs
  Dim As String tRet = ""

  milliseconds = CInt(seconds * 1000)

  hours = Int(milliseconds / 3600000)
  milliseconds = milliseconds Mod 3600000
  minutes = Int(milliseconds / 60000)
  milliseconds = milliseconds Mod 60000
  secs = Int(milliseconds / 1000)
  milliseconds = milliseconds Mod 1000

  If hours Then
    tRet = Str(hours) + ":"
  EndIf
  If minutes < 10 Then
    If Len(tRet) Then
        tRet += "0"
    EndIf
  EndIf
  tRet += Str(minutes) + ":"
  If secs < 10 Then
    tRet += "0"
  EndIf
  tRet += Str(secs)
  Select Case mode
    Case 0
        tRet += "." + Str(milliseconds)
    Case 1
        'do nothing
    Case 2 '1 digit
        tRet += "." + Left(Str(milliseconds),1)
    Case 3 '2 digits
        tRet += "." + Left(Str(milliseconds),2)
  End Select


  Return tRet

End Function


Sub Scan
    Dim As FB.EVENT se
    Dim As String g, keySubst
    Dim As Integer x
    Static As Double repeatLock

    menuitem = ""
    Line (271,503)-(296,512),cfont,b
    mouseMenu(" - ","",64,35,cfont,cback) 'decrease animation speed
    Line (79,503)-(104,512),cfont,b
    mouseMenu(" + ","",64,11,cfont,cback) 'increase animation speed
    Line (351,439)-(544,448),cfont,b
    mouseMenu(" setup engine 1 options ","",56,45,cfont,cback)
    Line (351,471)-(544,480),cfont,b
    mouseMenu(" setup engine 2 options ","",60,45,cfont,cback)
    Color cfont,cback
    Select Case menuitem
        Case ""
                'do nothing
        Case "-" 'decrease animation speed
            If animationSpeed > 0 Then
                animationSpeed -= 1
                WritePrivateProfileString("","animationSpeed",Str(animationSpeed),StrPtr(iniFile))
            EndIf
            update
        Case "+" 'increase animation speed
            animationSpeed += 1
            WritePrivateProfileString("","animationSpeed",Str(animationSpeed),StrPtr(iniFile))
            update
        Case "setup engine 1 options"
            ScreenSet 2,2
            setupEngine(engine(1),1)
            setEngineOptionsFlag = 1
            ScreenSet 1,1
            update
        Case "setup engine 2 options"
            ScreenSet 2,2
            setupEngine(engine(2),2)
            setEngineOptionsFlag = 1
            ScreenSet 1,1
            update
    End Select

    If Timer > repeatLock Then
        If GetKeyState(109) < 0 Then 'minus-key --> decrease animation speed
            If animationSpeed > 0 Then 'don't let animation speed get negative
                animationSpeed -= 1
                WritePrivateProfileString("","animationSpeed",Str(animationSpeed),StrPtr(iniFile))
            EndIf
            update
            repeatLock = Timer + .2 'repetition delay
        ElseIf GetKeyState(107) < 0 Then 'plus-key --> increase animation speed
            animationSpeed += 1
            WritePrivateProfileString("","animationSpeed",Str(animationSpeed),StrPtr(iniFile))
            update
            repeatLock = Timer + .2 'repetition delay
        EndIf
    EndIf

    If ScreenEvent(@se) Then
    If se.type = FB.EVENT_WINDOW_CLOSE Then 'end program
        Close
        CloseEngines
        'Screen 0
        ScreenSet
        'Sleep 500
        Print "ende"
        'Sleep 500
        End
    EndIf
    EndIf

End Sub

Sub GetEngineOptions(engine As String)
    Dim As SECURITY_ATTRIBUTES sa
    Dim As STARTUPINFO si
    Dim As PROCESS_INFORMATION pi
    Dim As HANDLE hReadChildPipe, hWritePipe, hReadPipe, hWriteChildPipe, hProcessHandle
    Dim As Integer iNumberOfBytesWritten, iTotalBytesAvail, iBytesToRead, x, y, begPtr, endPtr
    Dim As String order, g, sBuf

    ReDim As String responseString(1)

    Const As Integer MaxBytesToRead = 4096

    ReDim engineOptions(5,1)

    'install the pipes to the engine
    sa.nLength = SizeOf(SECURITY_ATTRIBUTES)
    sa.lpSecurityDescriptor = NULL
    sa.bInheritHandle = TRUE

    'start and connect engine
    CreatePipe(@hReadChildPipe,@hWritePipe,@sa,0)
    CreatePipe(@hReadPipe,@hWriteChildPipe,@sa,0)

    GetStartupInfo(@si)

    si.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW
    si.wShowWindow = SW_HIDE
    si.hStdOutput  = hWriteChildPipe
    si.hStdError   = hWriteChildPipe
    si.hStdInput   = hReadChildPipe

    CreateProcess(0,ExePath + "\engines\" + engine,0,0,TRUE,0,0,0,@si,@pi)

    hProcessHandle = pi.hProcess

    CloseHandle(hWriteChildPipe)
    CloseHandle(hReadChildPipe)

    order = "uci" + Chr(10)
    WriteFile(hWritePipe,StrPtr(order),Len(order),@iNumberOfBytesWritten,NULL)

    g = ""
    Do
      Do
            sBuf = "" 'clear buffer
            PeekNamedPipe(hReadPipe,NULL,NULL,NULL,@iTotalBytesAvail,NULL)
            If iTotalBytesAvail Then 'pipe is not empty
                If iTotalBytesAvail < MaxBytesToRead Then
                    iBytesToRead = iTotalBytesAvail 'set all available bytes to be read
                Else
                    iBytesToRead = MaxBytesToRead 'set the first 4096 bytes to be read
                EndIf
                sBuf = String(iBytesToRead,Chr(0)) 'set the length of the buffer string to the necessary value
                'read the specified amount of bytes from the pipe
                ReadFile(hReadPipe,StrPtr(sBuf),iBytesToRead,@iNumberOfBytesWritten,NULL)
                g += sBuf 'add the buffer to the return string
                Sleep 1
            Else 'pipe is empty
                Exit Do
            EndIf
        Loop
    Loop Until InStr(g,"uciok")

    x = 0
    y = 0
    begptr = 1
    Do 'parse the engine response to separate strings
        x += 1
        ReDim Preserve responseString(x) 'enlarge array
        endptr = InStr(begptr,g,Chr(13,10)) 'find next line feed
        responseString(x) = Mid(g,begptr,endptr - begptr) 'write separate string to array
        If InStr(responseString(x),"option name ")Then
            y += 1 'count option strings
        EndIf
        begptr = endptr + 2 'set pointer to the beginnig of the next string
    Loop While begptr <= Len(g)

    ReDim engineOptions(5,y) 'dim options array
    x = 0
    For y = 1 To UBound(responseString) 'parse option strings
        g = responseString(y)
        If InStr(g,"option name ") Then 'option string
            x += 1
            begptr = InStr(g,"option name ") + 13
            endptr = InStr(begptr,g,"type ")
            engineOptions(oname,x) = Mid(g,begptr - 1,endptr - begptr)

            If InStr(g,"type ") Then
                begptr = InStr(g,"type ") + 5
                endptr = InStr(begptr,g," ")
                engineOptions(otype,x) = Mid(g,begptr,endptr - begptr)
            EndIf

            If InStr(g,"default ") Then
                begptr = InStr(g,"default ") + 8
                endptr = InStr(begptr,g," ")
                engineOptions(odefault,x) = Mid(g,begptr,endptr - begptr)
            EndIf

            If InStr(g,"min ") Then
                begptr = InStr(g,"min ") + 4
                endptr = InStr(begptr,g," ")
                engineOptions(omin,x) = Mid(g,begptr,endptr - begptr)
            EndIf

            If InStr(g,"max ") Then
                begptr = InStr(g,"max ") + 4
                endptr = InStr(begptr,g," ")
                engineOptions(omax,x) = Mid(g,begptr,endptr - begptr)
            EndIf

            If InStr(g,"var ") Then
                begptr = 1
                Do
                    begptr = InStr(begptr,g,"var ") + 4
                    endptr = InStr(begptr,g," ")
                    engineOptions(ovar,x) += Mid(g,begptr,endptr - begptr) + Chr(10)'" "
                    begptr = endptr
                Loop While InStr(begptr,g,"var ")
            EndIf
        EndIf

    Next
    'sleep

    TerminateProcess(hProcessHandle, @ExitCode)
    CloseHandle(hWritePipe)
    CloseHandle(hReadPipe)

End Sub

Sub setupEngine(engine As String, engNumber As Integer)
    Dim As Integer menlin, mencol, x, y, xmax, setDefaultFlag, page, pages, pagelen, o, _
                   mx, my, mw, mb, sliderTop, sliderBot, scrollLock, begptr, endptr, wheel, _
                   wdiff
    Dim As String menutext, g, engName, opp

    engName = engine + " as " + Str(engNumber)

    GetEngineOptions(engine)

    pagelen = 20
    pages = Int(UBound(engineOptions,2)/pagelen) + 1
    page = 1

    Do
        Do 'setup loop
            menlin = 6
            mencol = 35
            menuitem = ""
            Cls
            Locate 3,10
            Print ">>> SETUP ENGINE ";
            Color cfont,cbacklt
            Print " ";engine;" ";
            Color cfont,cback
            Print " OPTIONS <<<
            If page * pagelen < UBound(engineOptions,2) Then
                xmax = pagelen
            Else
                xmax = UBound(engineOptions,2) - ((page - 1) * pagelen)
            EndIf

            Do 'menu loop
                menuitem = ""
                If pages > 1 Then 'more than 1 page --> create scrollbar
                    Line (520,57)-(530,370),cfont,b 'scrollbar
                    slidertop = 57 + 313/pages*(page-1)
                    sliderbot = 57 + 313/pages*page
                    Line (520,slidertop)-(530,sliderbot),cfont,bf 'slider
                    Locate menlin + 2, 69
                    Print "page";page;"/";Str(pages)
                    GetMouse(mx,my,mw,mb)
                    If mb = 0 Then 'no button pressed --> reset scrollLock
                        scrollLock = 0
                    EndIf

                    'scroll pages
                    If (mx > 520) And (mx < 530) And (scrollLock = 0) Then
                        If (my < slidertop) And (my > 57) And (mb And 1) Then 'scroll to previous page
                            page -= 1
                            scrollLock = 1
                            Exit Do,Do
                        ElseIf (my > sliderbot) And (my < 374) And (mb And 1) Then 'scroll to next page
                            page += 1
                            scrollLock = 1
                            Exit Do,Do
                        EndIf
                    EndIf
                EndIf

                For x = 1 To xmax 'selected page
                    o = (page - 1) * pagelen + x
                    GetPrivateProfileString(engName,engineOptions(oname,o),engineOptions(odefault,o),@iniBuffer,100,StrPtr(iniFile))
                    menutext = engineOptions(oname,o) + " = " + iniBuffer
                    
                    Select Case engineOptions(otype,o) 'extend menu text
                        Case "
check"
                            
                        Case "
spin"
                                    menutext += "  (" + engineOptions(omin,o) + ".." + engineOptions(omax,o) + ") [" + engineOptions(odefault,o) + "]"
                        Case "
combo"
                            If iniBuffer = engineOptions(odefault,o) Then
                                menutext += "
  (=default)"
                            ElseIf inibuffer = Left(engineOptions(ovar,o),InStr(engineOptions(ovar,o),Chr(10)) - 1) Then
                                menutext += "
  (=1st)"
                            EndIf
                        Case "
button"
                            menutext += "
BUTTON"
                        Case "
string"

                    End Select
                    mouseMenu(menutext,"=",menlin + 2 * x ,mencol,cfont,cback) 'put menu item on screen
                    If menuitemhit Then
                        Select Case engineOptions(otype,o)
                            Case "spin" 'change value with mouse wheel
                                If mw <> wheel Then
                                    Exit Do
                                EndIf
                        End Select
                    EndIf
                    If menuitem = engineOptions(oname,o)Then 'item was clicked
                        Exit Do
                    EndIf
                Next
                If setDefaultFlag = 1 Then
                    If Frac(Timer) > .5 Then 'flash item text
                        mouseMenu("
CHOOSE VALUE  to default","",menlin + 44,mencol - 15,cfont,cback)
                    Else
                        mouseMenu(" CHOOSE VALUE  to default","",menlin + 44,mencol - 15,cfont,cbacklt)
                    EndIf
                Else
                    mouseMenu("Set ONE value to default ","",menlin + 44,mencol - 15,cfont,cback)
                EndIf
                If setDefaultFlag = 2 Then
                    Locate menlin + 46,mencol - 15
                    If Frac(Timer) > .5 Then 'flash text
                        Color cfont,cback
                    Else
                        Color cfont,cbacklt
                    EndIf
                    Print " ARE YOU SURE ? "
                    mouseMenu("
NO ","",menlin + 46,mencol + 5,cfont,cback)
                    mouseMenu(" YES ","",menlin + 46,mencol + 10,cfont,cback)
                Else
                    mouseMenu("Set ALL values to default","",menlin + 46,mencol - 15,cfont,cback)
                EndIf
                mouseMenu("Exit","",menlin + 48,mencol - 15,cfont,cback)
                Color cfont,cback

                Select Case menuitem 'clicked menu item
                    Case "Set ONE value to default"
                        setDefaultFlag = 1
                    Case "
CHOOSE VALUE  to default"
                        setDefaultFlag = 0
                    Case "
Set ALL values to default" 'delete engine section from .ini file
                        setDefaultFlag = 2
                        Locate menlin + 46,mencol - 15
                        Print "
                         "
                    Case "
NO" 'cancel --> don't reset values
                        setDefaultFlag = 0
                        Locate menlin + 46,mencol - 15
                        Print "
                              "
                    Case "
YES" 'delete engine section from .ini file --> set all values to default
                        WritePrivateProfileString(engine,0,0,StrPtr(iniFile))
                        Locate menlin + 46,mencol - 15
                        Print "
                              "
                        SetDefaultFlag = 0
                    Case "
Exit" 'exit engine options setup
                        Return
                End Select
                
                wheel = mw
            Loop
            Color cfont,cback
            
            'edit option
            If setDefaultFlag Then 'set chosen value to default
                iniBuffer = engineOptions(odefault,o)
                setDefaultFlag = 0
            Else 'set option to new value
                Select Case engineOptions(otype,o) 'option type
                    Case "
check" 'toggle value
                        Select Case iniBuffer
                            Case "
true"
                                iniBuffer = "
false"
                            Case "
false"
                                iniBuffer = "
true"
                        End Select
                        
                    Case "
spin"
                        If wheel = mw Then 'no mouse wheel action --> keyboard input
                            Locate menlin + 2 * x ,mencol + 2
                            Print String(Len(iniBuffer) + 3," ")
                            Locate menlin + 2 * x ,mencol + 3
                            Input "",g
                        Else 'mouse wheel
                            y = Val(iniBuffer)
                            y += wheel - mw
                            g = Str(y)
                            wheel = mw
                        EndIf
                        If g <> "" Then
                            If (Val(g) >= Val(engineOptions(omin,o))) And (Val(g) <= Val(engineOptions(omax,o))) Then
                                iniBuffer = g
                            EndIf
                        EndIf

                    Case "combo" 'flip through "var" items
                        begptr = 1 'set pointer to 1st var item
                        endptr = InStr(engineOptions(ovar,o),Chr(10)) 'set pointer to separator
                        Do Until Mid(engineOptions(ovar,o),begptr,endptr - begptr) = iniBuffer 'search current var item
                            begptr = endptr + 1
                            endptr = InStr(begptr,engineOptions(ovar,o),Chr(10))
                            If endptr >= Len(engineOptions(ovar,o)) Then 'set pointer to 1st var item
                                endptr = 0
                                Exit Do
                            EndIf
                        Loop
                        begptr = endptr + 1 'set pointer to next var item
                        endptr = InStr(begptr,engineOptions(ovar,o),Chr(10)) 'set pointer to next separator
                        iniBuffer = Mid(engineOptions(ovar,o),begptr,endptr - begptr) 'get next var item
                        
                    Case "
button"
                        'choose correct engine
                        If engNumber = currentWhite Then
                            opp = w
                        ElseIf engNumber = currentBlack Then
                            opp = b
                        EndIf
                        pCon("
opp ",opp)
                        WriteEngineInfo(opp,"
setoption name " + engineOptions(oname,o)) 'send BUTTON option to engine
                    Case "
string"
                        Locate menlin + 2 * x ,mencol + 5 + Len(inibuffer)
                        Input "",g
                        If g <> "" Then
                            iniBuffer = g
                        EndIf
                End Select
            EndIf

            If iniBuffer = engineOptions(odefault,o) Then 'remove .ini file entry --> set option to default
                WritePrivateProfileString(engName,engineOptions(oname,o),0,StrPtr(iniFile))
            Else 'write value to .ini file
                WritePrivateProfileString(engName,engineOptions(oname,o),StrPtr(iniBuffer),StrPtr(iniFile))
            EndIf

        Loop
    Loop
End Sub

Sub setEngineOptions(opp As String)
    Dim As Integer x, ff
    Dim As String engName, g, optName, optVal

    Select Case opp
        Case w
            engName = engine(currentWhite) + " as " + Str(currentWhite)
        Case b
            engName = engine(currentBlack) + " as " + Str(currentBlack)
    End Select
    ff = FreeFile
    Open ExePath + "\setup.ini" For Input As ff
    Do 'search section in .ini - file
        Line Input #ff,g
    Loop Until (g = "[" + engName + "]") Or (Eof(ff))
    If Eof(ff) Then 'section not found
        Close ff
        Return
    EndIf
    Do 'set all mentioned options
        Line Input #ff,g
        If Left(g,1) = "
[" Then 'next section --> end option setting
            Close ff
            Return
        ElseIf g = "" Then 'blank line
            'next line
        Else
            x = InStr(g,"=")
            If x <> 0 Then 'parse option entry
                optname = Left(g,x - 1) 'option name
                optVal = Mid(g,x + 1) 'option value
                WriteEngineInfo(opp,"isready")
                Do 'wait until engine is listening
                Loop Until InStr(GetEngineResponse(opp),"
readyok")
                WriteEngineInfo(opp,"
setoption name " + optName + " value " + optVal) 'send option to engine
            EndIf
        EndIf
    Loop Until Eof(ff)
    Close ff
        
End Sub


'***************************************************
knightCheck:
    Data -1,-2, 1,-2, 2,-1, 2,1, 1,2, -1,2, -2,1, -2,-1
    
' 1 = pawn, 2 = rook, 3 = knight, 4 = bishop, 5 = queen, 6 = king, 7 = border
' black pieces given negative value, sgn() returns -1 for black and +1 for white

'    0  1  2  3  4  5  6  7  8  9  10 11  <--- internal coordinates
'          A  B  C  D  E  F  G  H         <--- display coordinates
boardLayout:
Data 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 '0
Data 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 '1
Data 7, 7,-2,-3,-4,-5,-6,-4,-3,-2, 7, 7 '2     8
Data 7, 7,-1,-1,-1,-1,-1,-1,-1,-1, 7, 7 '3     7
Data 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7 '4     6
Data 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7 '5     5
Data 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7 '6     4
Data 7, 7, 0, 0, 0, 0, 0, 0, 0, 0, 7, 7 '7     3
Data 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 7, 7 '8     2
Data 7, 7, 2, 3, 4, 5, 6, 4, 3, 2, 7, 7 '9     1
Data 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 '10
Data 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 '11


Pieces:
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
.........................................."
Data "
....................####.................."
Data "
...................#****#................."
Data "
..................#******#................"
Data "
.................#********#..............."
Data "
.................#********#..............."
Data "
.................#********#..............."
Data "
.................#********#..............."
Data "
..................#******#................"
Data "
...................#****#................."
Data "
...................######................."
Data "
..................#******#................"
Data "
................##********##.............."
Data "
...............#************#............."
Data "
..............#**************#............"
Data "
..............################............"
Data "
.................#********#..............."
Data "
.................#********#..............."
Data "
.................#********#..............."
Data "
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