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HUOC_OPENING.bas
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'HUOC: Huo Chess Opening Editor by Spiros I. Kakos (huo) - v0.3
'Version 0.1: Initial tests
'Version 0.2: Draft version to read and write openings
'Version 0.3: Fully functional
'Based on the Huo Chess implementation in C++ and C#
'Check "Huo Chess" in C# at Harmonia Philosophica for code in C# and relative tutorials
'Check https://harmoniaphilosophica.com/2019/02/13/huo-chess-c-micro-chess-updated/
'Not supported:
'1. Checking whether a position is already in the Opening Book, so as not to document it again
'Graphics taken from Deep Basic by Thomas McBurney
'Check https://web.archive.org/web/20081230182814/http://home.pacific.net.au/~tommyinoz/db.html
'Check also https://archive.org/details/DeepBasic
DECLARE SUB movValidation (aline AS INTEGER, fline AS INTEGER, arcol AS INTEGER, telcol AS INTEGER)
DECLARE SUB drawBoard ()
DECLARE SUB ElegxosNomimotitas(ENSkakiera() AS STRING, startColumn AS INTEGER, startRank AS INTEGER, finishColumn AS INTEGER, finishRank AS INTEGER, MovingPieceEN AS STRING)
DEFINT A-Z
OPTION BASE 1 'Make tables dimensions start from 1
DIM SHARED chessboard$(8, 8)
COMMON SHARED playerColor$
COMMON SHARED startingRank, startingColumn
COMMON SHARED finishingRank, finishingColumn
COMMON SHARED startingRankText$, startingColumnText$
COMMON SHARED finishingRankText$, finishingColumnText$
COMMON SHARED Move$
COMMON SHARED MovingPiece$
COMMON SHARED ProsorinoKommati$
COMMON SHARED Nomimotita
COMMON SHARED debugMode
COMMON SHARED positionScore
COMMON SHARED bestStartingRank, bestStartingColumn
COMMON SHARED bestFinishingRank, bestFinishingColumn
COMMON SHARED bestPositionScore
COMMON SHARED whoPlays$
COMMON SHARED computerLogs$, humanLogs$
COMMON SHARED MoveNumber
'Castling
COMMON SHARED whiteCastling
COMMON SHARED whiteBigCastling
COMMON SHARED whiteSmallCastling
COMMON SHARED blackCastling
COMMON SHARED blackBigCastling
COMMON SHARED blackSmallCastling
'Check variables
COMMON SHARED whiteCheck
COMMON SHARED blackCheck
'En passant
COMMON SHARED enPassantColumn
COMMON SHARED enPassantRank
COMMON SHARED enPassantHappened
'COMMON SHARED enPassantTest
'MinMax
'Important note: All dimensions in the tables are +1 compared to the Huo Chess in C#! (tables start from 1 here)
COMMON SHARED foundMove
DIM SHARED NodesAnalysis0(1000000, 6)
DIM SHARED NodesAnalysis1(1000000, 2)
DIM SHARED NodesAnalysis2(1000000, 2)
DIM SHARED NodesAnalysis3(10000000, 2) AS LONG
DIM SHARED NodesAnalysis4(10000000, 2) AS LONG
COMMON SHARED NodeLevel_0_count AS LONG
COMMON SHARED NodeLevel_1_count AS LONG
COMMON SHARED NodeLevel_2_count AS LONG
COMMON SHARED NodeLevel_3_count AS LONG
COMMON SHARED NodeLevel_4_count AS LONG
COMMON SHARED parentNodeAnalyzed AS LONG
DIM SHARED NodesMoves0$(1000000)
DIM SHARED NodesMoves1$(1000000)
DIM SHARED NodesMoves2$(1000000)
DIM SHARED NodesMoves3$(1000000)
DIM SHARED NodesMoves4$(1000000)
DIM SHARED bestNodes0(10000000)
DIM SHARED bestNodes1(10000000)
DIM SHARED bestNodes2(10000000)
DIM SHARED bestNodes3(10000000)
DIM SHARED bestNodes4(10000000)
COMMON SHARED bestNode2, bestNode1, bestNode0
COMMON SHARED counter0 AS LONG
COMMON SHARED counter1 AS LONG
COMMON SHARED counter2 AS LONG
COMMON SHARED counter3 AS LONG
COMMON SHARED counter4 AS LONG
COMMON SHARED huologs$, logLine$
COMMON SHARED thinkingDepth
COMMON SHARED Move
'Set debugMode = 1 if you want debugging messages to appear, else set to 0
debugMode = 0
PRINT "Huo Chess - HUOC Opening Editor v0.3 by Spiros Kakos (2020)"
PRINT ""
PRINT "Graphics taken from Deep Basic by Thomas McBurney"
PRINT ""
PRINT "How to use"
PRINT "----------"
PRINT "Enter move coordinates without spaces (e.g. c2c4) and press Enter"
PRINT "Human player plays all moves, white and black"
PRINT "All moves played as stored in separate text files as suggested moves for the corresponding position."
PRINT "Place the openings text files in the same folder as the HUOC chess prograrm for the latter to use them!"
PRINT ""
PRINT "PRESS ANY KEY TO START..."
DO: LOOP UNTIL INKEY$ <> ""
SetPlayerColor:
'Set the colour of the player
playerColor$ = "w"
SetThinkingDepth:
'Set the thinking depth
thinkingDepth = 1
computerLogs:
computerLogs$ = "n"
humanLogs$ = "n"
CALL initialPosition
DIM SHARED P$(6), PIECE%(7, 16, 8, 2), CMOVES%(6, 100), HMOVES%(6, 100)
DIM SHARED BO%(8, 9), CB%(9, 9)
DIM SHARED ENGINE%(10, 100, 5), SCORE%(12, 2)
DIM SHARED PAWN%(8, 2), BESTL%(10, 12, 4), HISTORY%(4, 10)
DIM SHARED QENGINE%(15, 30, 5), QSCORE%(15, 2), QB%(8, 9)
DIM SHARED FIRSTPLY%(218)
DIM SHARED FIND$(10), QUERY$(9), dsc$(10), RECORD$(10)
DIM SHARED TAKEBACK%(5, 200), v%(6)
DIM SHARED TESTMODE%, NODES, EVAL%, MATEH%, MATEC%, SIDE%, PHASE%, HKY%, HKX%
DIM SHARED CKY%, CKX%, SCORE%, TEMP1%, TEMP2%, TEMP3%, A%, TX%, TY%
DIM C$(8), CY$(8)
' GRAPHICS
DIM SHARED Gpiece(0 TO 400) AS INTEGER
DIM SHARED blot(0 TO 400) AS INTEGER
DIM SHARED GraphicImage(0 TO 4800) AS INTEGER
'SIDE 0 = COMPUTER PLAYS BLACK
'SIDE 1 = COMPUTER PLAYS WHITE
'SIDE% = 0
SCREEN 9 '12
'**** LOAD IMAGES OF PIECES
LoadPieces:
'**** LOAD GRAPHICS OF PIECES OFF DISK
DEF SEG = VARSEG(GraphicImage(0))
BLOAD "PIECES.EGA", VARPTR(GraphicImage(0))
P$(1) = "P": P$(2) = "N": P$(3) = "B": P$(4) = "R": P$(5) = "Q": P$(6) = "K"
C$(1) = "A": C$(2) = "B": C$(3) = "C": C$(4) = "D": C$(5) = "E": C$(6) = "F": C$(7) = "G": C$(8) = "H"
CY$(1) = "8": CY$(2) = "7": CY$(3) = "6": CY$(4) = "5": CY$(5) = "4": CY$(6) = "3": CY$(7) = "2": CY$(8) = "1"
' PIECE VALUE
v%(1) = 100: v%(2) = 300: v%(3) = 305
v%(4) = 500: v%(5) = 900: v%(6) = 19000
'MAXQDEPTH% = 4
'LEVEL% = 10
'MOVESPERHOUR% = 360
'BEEPMODE% = 0
' *** KNIGHT
PIECE%(2, 1, 1, 1) = -1: PIECE%(2, 1, 1, 2) = -2
PIECE%(2, 2, 1, 1) = 1: PIECE%(2, 2, 1, 2) = -2
PIECE%(2, 3, 1, 1) = 2: PIECE%(2, 3, 1, 2) = -1
PIECE%(2, 4, 1, 1) = 2: PIECE%(2, 4, 1, 2) = 1
PIECE%(2, 5, 1, 1) = 1: PIECE%(2, 5, 1, 2) = 2
PIECE%(2, 6, 1, 1) = -1: PIECE%(2, 6, 1, 2) = 2
PIECE%(2, 7, 1, 1) = -2: PIECE%(2, 7, 1, 2) = 1
PIECE%(2, 8, 1, 1) = -2: PIECE%(2, 8, 1, 2) = -1
'*** BISHOP
FOR i = 1 TO 8
PIECE%(3, 1, i, 1) = i * -1: PIECE%(3, 1, i, 2) = i * -1
PIECE%(3, 2, i, 1) = i: PIECE%(3, 2, i, 2) = i * -1
PIECE%(3, 3, i, 1) = i: PIECE%(3, 3, i, 2) = i
PIECE%(3, 4, i, 1) = i * -1: PIECE%(3, 4, i, 2) = i
NEXT
' **** ROOK
FOR i = 1 TO 8
PIECE%(4, 1, i, 1) = 0: PIECE%(4, 1, i, 2) = i * -1
PIECE%(4, 2, i, 1) = i: PIECE%(4, 2, i, 2) = 0
PIECE%(4, 3, i, 1) = 0: PIECE%(4, 3, i, 2) = i
PIECE%(4, 4, i, 1) = i * -1: PIECE%(4, 4, i, 2) = 0
NEXT
' **** QUEEN
FOR D = 1 TO 4
FOR i = 1 TO 8
PIECE%(5, D, i, 1) = PIECE%(3, D, i, 1): PIECE%(5, D, i, 2) = PIECE%(3, D, i, 2)
NEXT
NEXT
FOR D = 1 TO 4
FOR i = 1 TO 8
PIECE%(5, D + 4, i, 1) = PIECE%(4, D, i, 1): PIECE%(5, D + 4, i, 2) = PIECE%(4, D, i, 2)
NEXT
NEXT
' **** KING
FOR i = 1 TO 8
PIECE%(6, i, 1, 1) = PIECE%(5, i, 1, 1): PIECE%(6, i, 1, 2) = PIECE%(5, i, 1, 2)
NEXT
' ***** SUPER PIECE
FOR D = 1 TO 8
FOR S = 1 TO 8
PIECE%(7, D, S, 1) = PIECE%(5, D, S, 1): PIECE%(7, D, S, 2) = PIECE%(5, D, S, 2)
NEXT
NEXT
FOR D = 1 TO 8
PIECE%(7, D + 8, 1, 1) = PIECE%(2, D, 1, 1): PIECE%(7, D + 8, 1, 2) = PIECE%(2, D, 1, 2)
NEXT
START:
'************************** START **************************************
COLOR 7
MAIN:
INITBOARD:
'******************************************************************
' Initialise the board
'******************************************************************
FOR Y = 1 TO 9
FOR X = 1 TO 8
BO%(X, Y) = 0
NEXT
NEXT
FOR X = 1 TO 8: BO%(X, 2) = -1: BO%(X, 7) = 1: NEXT
BO%(1, 1) = -4: BO%(8, 1) = -4: BO%(2, 1) = -2: BO%(7, 1) = -2
BO%(3, 1) = -3: BO%(6, 1) = -3: BO%(4, 1) = -5: BO%(5, 1) = -6
FOR X = 1 TO 8: BO%(X, 8) = BO%(X, 1) * -1: NEXT
FOR i = 1 TO 4: BO%(i, 9) = 1: BO%(i + 4, 9) = 0: NEXT
CALL DRAWBOARD
COLOR 7
'LOCATE 2, 58: PRINT "MOVES LIST"
LOCATE 2, 58: PRINT "H UO CHESS"
'LOCATE 5, 55: INPUT "Enter move:", Move$
'LOCATE 7, 55: PRINT "Thinking..."
'Initialize variables
MoveNumber = 0
'Check variables
whiteCheck = 0
blackCheck = 0
'Castling
whiteCastling = 0
blackCastling = 0
whiteBigCastling = 0
whiteSmallCastling = 0
blackBigCastling = 0
blackSmallCastling = 0
'En Passant
'enPassantTest = 0
enPassantHappened = 0
'Opening
FileNum = 0
whoPlays$ = "Human"
CALL PlayerMove
SUB PlayerMove
'Initialize variables
'Check
whiteCheck = 0
blackCheck = 0
'En Passant
enPassantHappened = 0
'Check the Check
IF playerColor$ = "b" THEN CALL checkBlackCheck(chessboard$())
IF playerColor$ = "w" THEN CALL checkWhiteCheck(chessboard$())
'PRINT "PlayerMove: blackCheck = " + STR$(blackCheck): INPUT aa$
IF whiteCheck = 1 OR blackCheck = 1 THEN LOCATE 9, 55: PRINT "Check!": LOCATE 10, 55: PRINT "Press Enter": DO: LOOP UNTIL INKEY$ <> "": LOCATE 9, 55: PRINT " ": LOCATE 10, 55: PRINT " "
LOCATE 5, 67: PRINT " "
LOCATE 5, 55: INPUT "Enter move: ", Move$
startingColumnText$ = MID$(Move$, 1, 1)
startingRankText$ = MID$(Move$, 2, 1)
finishingColumnText$ = MID$(Move$, 3, 1)
finishingRankText$ = MID$(Move$, 4, 1)
IF humanLogs$ = "y" THEN debugMode = 1 ELSE debugMode = 0
SELECT CASE startingRankText$
CASE "1"
startingRank = 1
CASE "2"
startingRank = 2
CASE "3"
startingRank = 3
CASE "4"
startingRank = 4
CASE "5"
startingRank = 5
CASE "6"
startingRank = 6
CASE "7"
startingRank = 7
CASE "8"
startingRank = 8
END SELECT
SELECT CASE finishingRankText$
CASE "1"
finishingRank = 1
CASE "2"
finishingRank = 2
CASE "3"
finishingRank = 3
CASE "4"
finishingRank = 4
CASE "5"
finishingRank = 5
CASE "6"
finishingRank = 6
CASE "7"
finishingRank = 7
CASE "8"
finishingRank = 8
END SELECT
SELECT CASE startingColumnText$
CASE "A", "a"
startingColumn = 1
CASE "B", "b"
startingColumn = 2
CASE "C", "c"
startingColumn = 3
CASE "D", "d"
startingColumn = 4
CASE "E", "e"
startingColumn = 5
CASE "F", "f"
startingColumn = 6
CASE "G", "g"
startingColumn = 7
CASE "H", "h"
startingColumn = 8
END SELECT
SELECT CASE finishingColumnText$
CASE "A", "a"
finishingColumn = 1
CASE "B", "b"
finishingColumn = 2
CASE "C", "c"
finishingColumn = 3
CASE "D", "d"
finishingColumn = 4
CASE "E", "e"
finishingColumn = 5
CASE "F", "f"
finishingColumn = 6
CASE "G", "g"
finishingColumn = 7
CASE "H", "h"
finishingColumn = 8
END SELECT
MovingPiece$ = chessboard$(startingColumn, startingRank)
ProsorinoKommati$ = chessboard$(finishingColumn, finishingRank)
IF (debugMode = 1) THEN
PRINT "[Move: " + STR$(startingColumn) + STR$(startingRank) + " -> " + STR$(finishingColumn) + STR$(finishingRank) + " ]"
END IF
'Check legality of the move entered
CALL ElegxosNomimotitas(chessboard$(), 0, startingColumn, startingRank, finishingColumn, finishingRank, MovingPiece$)
' ------------------ Check the Check! START ------------------
'Temporarily do the move
chessboard$(finishingColumn, finishingRank) = chessboard$(startingColumn, startingRank)
chessboard$(startingColumn, startingRank) = ""
'Check the check
IF playerColor$ = "b" AND Nomimotita = 1 THEN
whoPlays$ = "HY"
CALL checkBlackCheck(chessboard$())
'Restore Nomimotita! (because it is 'broken' in the checkCheck function
Nomimotita = 1
IF blackCheck = 1 THEN Nomimotita = 0
whoPlays$ = "Human"
END IF
IF playerColor$ = "w" AND Nomimotita = 1 THEN
whoPlays$ = "HY"
CALL checkWhiteCheck(chessboard$())
'Restore Nomimotita! (because it is 'broken' in the checkCheck function
Nomimotita = 1
IF whiteCheck = 1 THEN Nomimotita = 0
whoPlays$ = "Human"
END IF
'Undo the move
chessboard$(startingColumn, startingRank) = MovingPiece$
chessboard$(finishingColumn, finishingRank) = ProsorinoKommati$
' ------------------ Check the Check! END ------------------
'Castling
IF (playerColor$ = "w" AND whiteCastling = 0) OR (playerColor$ = "b" AND blackCastling = 0) THEN CALL Castling
IF playerColor$ = "w" AND whiteCastling = 1 THEN Nomimotita = 1
IF playerColor$ = "b" AND blackCastling = 1 THEN Nomimotita = 1
'If move is legal, then do the move and present it in the chessbooard
IF Nomimotita = 1 THEN
IF debugMode = 1 THEN
PRINT "Now we will redraw the chessboard"
END IF
' ------------------- Seach if position is already in the Opening Book files -------------------
'Search for the position
FileNum = 0
positionFile$ = ""
foundOpening = 0
newLine$ = ""
DO
FileNum = FileNum + 1
openingFile$ = "Opening" + LTRIM$(STR$(FileNum)) + ".txt"
IF _FILEEXISTS(openingFile$) THEN
verifyPosition = 1
CLOSE #4
OPEN openingFile$ FOR INPUT AS #4
FOR i = 1 TO 8
FOR j = 1 TO 8
LINE INPUT #4, newLine$
IF CHR$(34) + chessboard$(i, j) + CHR$(34) <> newLine$ THEN verifyPosition = 0
NEXT j
NEXT i
'If position is found, store the file and read the suggested move!
IF verifyPosition = 1 THEN
positionFile$ = openingFile$
foundOpening = 1
'Read Suggested Move line
LINE INPUT #4, newLine$
'Read the coordinates of the suggested move
LINE INPUT #4, newLine$
bestStartingColumn = VAL(newLine$)
LINE INPUT #4, newLine$
bestStartingRank = VAL(newLine$)
LINE INPUT #4, newLine$
bestFinishingColumn = VAL(newLine$)
LINE INPUT #4, newLine$
bestFinishingRank = VAL(newLine$)
END IF
ELSE
positionFile$ = "Not found"
END IF
LOOP WHILE positionFile$ = ""
IF foundOpening = 1 THEN
'INPUT "Position exists already in opening book. Press Enter to continue... ", Cont$
LOCATE 9, 55: PRINT "Position already in": LOCATE 10, 55: PRINT "file " + positionFile$: LOCATE 12, 55: PRINT "Press Enter"
DO: LOOP UNTIL INKEY$ <> ""
LOCATE 9, 55: PRINT " ": LOCATE 10, 55: PRINT " ": LOCATE 12, 55: PRINT " "
END IF
' ------------------- If a new position, then record it in the Opening Book files -------------------
'Store the move in opening database
IF foundOpening = 0 THEN
'Find next file number
FileNum = 0
fileExists = 0
DO
FileNum = FileNum + 1
openingFile$ = "Opening" + LTRIM$(STR$(FileNum)) + ".txt"
IF _FILEEXISTS(openingFile$) THEN
'PRINT "Opening 1 found!": INPUT A$
fileExists = 1
ELSE
fileExists = 0
END IF
LOOP WHILE fileExists = 1
'PRINT "Next file = " + STR$(FileNum): INPUT E$
'Open the file
OPEN openingFile$ FOR OUTPUT AS #3
'Store the chessboard...
FOR i = 1 TO 8
FOR j = 1 TO 8
WRITE #3, chessboard$(i, j)
NEXT j
NEXT i
END IF
'Do the move
chessboard$(finishingColumn, finishingRank) = chessboard$(startingColumn, startingRank)
chessboard$(startingColumn, startingRank) = ""
'Castling
IF playerColor$ = "w" AND whiteBigCastling = 1 THEN chessboard$(4, 1) = "wrook": chessboard$(1, 1) = ""
IF playerColor$ = "w" AND whiteSmallCastling = 1 THEN chessboard$(6, 1) = "wrook": chessboard$(8, 1) = ""
IF playerColor$ = "b" AND blackBigCastling = 1 THEN chessboard$(4, 8) = "brook": chessboard$(1, 8) = ""
IF playerColor$ = "b" AND blackSmallCastling = 1 THEN chessboard$(6, 8) = "brook": chessboard$(8, 8) = ""
'Check for pawn promotion
CALL PawnPromotion
'En passant happened?
IF enPassantHappened = 1 THEN
IF enPassantRank = 3 THEN chessboard$(finishingColumn, 4) = ""
IF enPassantRank = 6 THEN chessboard$(finishingColumn, 5) = ""
END IF
'En passant possible?
enPassantColumn = 0
enPassantRank = 0
IF startingColumn = finishingColumn AND startingRank = 2 AND finishingRank = 4 AND MovingPiece$ = "wpawn" THEN
enPassantColumn = finishingColumn
enPassantRank = 3
ELSEIF startingColumn = finishingColumn AND startingRank = 7 AND finishingRank = 5 AND MovingPiece$ = "bpawn" THEN
enPassantColumn = finishingColumn
enPassantRank = 6
END IF
'LOCATE 8, 55: PRINT "Move OK"
'LOCATE 9, 55: INPUT "Checkpoint", A$
CALL DRAWBOARD
IF foundOpening = 0 THEN
'Store the move in opening database
WRITE #3, "Suggested Move"
WRITE #3, startingColumn
WRITE #3, startingRank
WRITE #3, finishingColumn
WRITE #3, finishingRank
CLOSE #3
END IF
'Increase move number of the game
IF playerColor$ = "w" THEN MoveNumber = MoveNumber + 1
'Time for the next move now...
whoPlays$ = "Human"
IF playerColor$ = "w" THEN
playerColor$ = "b"
ELSEIF playerColor$ = "b" THEN
playerColor$ = "w"
END IF
LOCATE 5, 55: PRINT "Your move: "
CALL PlayerMove
ELSE
LOCATE 5, 55: PRINT "Invalid move "
LOCATE 7, 55: PRINT "Press a key "
DO: LOOP UNTIL INKEY$ <> ""
LOCATE 7, 55: PRINT " "
CALL PlayerMove
END IF
END SUB
SUB computerMove
'Initialize variables
Move = 1
bestPositionScore = 0
bestStartingRank = 0
bestStartingColumn = 0
bestFinishingRank = 0
bestFinishingColumn = 0
IF playerColor$ = "w" THEN bestPositionScore = 999
IF playerColor$ = "b" THEN bestPositionScore = -999
'MinMax
foundMove = 0
NodeLevel_0_count = 1
NodeLevel_1_count = 1
NodeLevel_2_count = 1
NodeLevel_3_count = 1
NodeLevel_4_count = 1
'Check
whiteCheck = 0
blackCheck = 0
'En Passant
enPassantHappened = 0
'Check the Check
IF playerColor$ = "b" THEN CALL checkWhiteCheck(chessboard$())
IF playerColor$ = "w" THEN CALL checkBlackCheck(chessboard$())
'PRINT "PlayerMove: blackCheck = " + STR$(blackCheck): INPUT aa$
IF whiteCheck = 1 OR blackCheck = 1 THEN LOCATE 9, 55: PRINT "Check!": LOCATE 10, 55: PRINT "Press Enter": DO: LOOP UNTIL INKEY$ <> "": LOCATE 9, 55: PRINT " ": LOCATE 10, 55: PRINT " "
IF computerLogs$ = "y" THEN debugMode = 1 ELSE debugMode = 0
'Scan the chessboard...
FOR I = 1 TO 8
FOR J = 1 TO 8
'If you find a piece of the computer...
IF ((MID$(chessboard$(I, J), 1, 1) = "w" AND playerColor$ = "b") OR (MID$(chessboard$(I, J), 1, 1) = "b" AND playerColor$ = "w")) THEN
'Scan all possible destination squares...
FOR ii = 1 TO 8
FOR jj = 1 TO 8
startingColumn = I
startingRank = J
finishingColumn = ii
finishingRank = jj
MovingPiece$ = chessboard$(I, J)
ProsorinoKommati$ = chessboard$(ii, jj)
'Check legality of the move entered
CALL ElegxosNomimotitas(chessboard$(), 0, startingColumn, startingRank, finishingColumn, finishingRank, MovingPiece$)
' ------------------ Check the Check! START ------------------
'Temporarily do the move
chessboard$(finishingColumn, finishingRank) = chessboard$(startingColumn, startingRank)
chessboard$(startingColumn, startingRank) = ""
'Check the check
IF playerColor$ = "b" AND Nomimotita = 1 THEN
whoPlays$ = "Human"
CALL checkWhiteCheck(chessboard$())
'Restore Nomimotita! (because it is 'broken' in the checkCheck function
Nomimotita = 1
IF whiteCheck = 1 THEN Nomimotita = 0
whoPlays$ = "HY"
END IF
IF playerColor$ = "w" AND Nomimotita = 1 THEN
whoPlays$ = "Human"
CALL checkBlackCheck(chessboard$())
'Restore Nomimotita! (because it is 'broken' in the checkCheck function
Nomimotita = 1
IF blackCheck = 1 THEN Nomimotita = 0
whoPlays$ = "HY"
END IF
'Undo the move
chessboard$(startingColumn, startingRank) = MovingPiece$
chessboard$(finishingColumn, finishingRank) = ProsorinoKommati$
' ------------------ Check the Check! END ------------------
IF debugMode = 1 THEN
PRINT ""
PRINT "NEW MOVE ANALYZED: " + STR$(startingColumn) + STR$(startingRank) + " -> " + STR$(finishingColumn) + STR$(finishingRank)
PRINT "Legality of the move analyzed: " + STR$(Nomimotita)
IF startingColumn = 2 AND startingRank = 4 AND finishingColumn = 5 AND finishingRank = 7 THEN
PRINT ""
PRINT "BISHOP MOVE ANALYZED: " + STR$(startingColumn) + STR$(startingRank) + " -> " + STR$(finishingColumn) + STR$(finishingRank)
PRINT "What is in e7: " + chessboard$(5, 7)
PRINT "Moving piece : " + MovingPiece$
PRINT "Prosorino kommati : " + ProsorinoKommati$
PRINT "Legality of the move analyzed: " + STR$(Nomimotita)
INPUT A$
END IF
END IF
'If move is legal, then do the move and present it in the chessbooard
IF Nomimotita = 1 THEN
'-------------- MinMax --------------
'Important note: All dimensions in the tables are +1 compared to the Huo Chess in C#! (tables start from 1 here)
NodesAnalysis0(NodeLevel_0_count, 3) = startingColumn
NodesAnalysis0(NodeLevel_0_count, 4) = finishingColumn
NodesAnalysis0(NodeLevel_0_count, 5) = startingRank
NodesAnalysis0(NodeLevel_0_count, 6) = finishingRank
'If first move found, then store it (This is useless)
IF foundMove = 0 THEN
'NodesAnalysis0(NodeLevel_0_count, 3) = startingColumn
'NodesAnalysis0(NodeLevel_0_count, 4) = finishingColumn
'NodesAnalysis0(NodeLevel_0_count, 5) = startingRank
'NodesAnalysis0(NodeLevel_0_count, 6) = finishingRank
'PRINT "startingColumn = " + STR$(startingColumn)
'PRINT "finishingColumn = " + STR$(finishingColumn)
'PRINT "startingRank = " + STR$(startingRank)
'PRINT "finishingRank = " + STR$(finishingRank)
'INPUT A$
foundMove = 1
END IF
'Do the move
chessboard$(finishingColumn, finishingRank) = chessboard$(startingColumn, startingRank)
chessboard$(startingColumn, startingRank) = ""
'Count the score of the move
CALL countScore
IF debugMode = 1 THEN
PRINT ""
PRINT "NodeLevel_0_count = " + STR$(NodeLevel_0_count)
PRINT "NodeLevel_1_count = " + STR$(NodeLevel_1_count)
END IF
'-------------- MinMax --------------
'Store scores
NodesAnalysis0(NodeLevel_0_count, 1) = positionScore
' Store parents
NodesAnalysis0(NodeLevel_0_count, 2) = 0
'Store the move
NodesMoves0$(NodeLevel_0_count) = STR$(startingColumn) + STR$(startingRank) + " -> " + STR$(finishingColumn) + STR$(finishingRank)
IF Move = thinkingDepth THEN
'If the score is better than the existing best score, then this is the best move now (and the best score)
IF ((playerColor$ = "b" AND positionScore >= bestPositionScore) OR (playerColor$ = "w" AND positionScore <= bestPositionScore)) THEN
bestStartingRank = startingRank
bestStartingColumn = startingColumn
bestFinishingRank = finishingRank
bestFinishingColumn = finishingColumn
bestPositionScore = positionScore
END IF
END IF
IF Move < thinkingDepth THEN
Move = Move + 1
CALL HumanMove1(chessboard$())
END IF
'Undo the move
chessboard$(startingColumn, startingRank) = MovingPiece$
chessboard$(finishingColumn, finishingRank) = ProsorinoKommati$
'-------------- MinMax --------------
'Increase node count
NodeLevel_0_count = NodeLevel_0_count + 1
END IF
NEXT jj
NEXT ii
END IF
NEXT J
NEXT I
IF debugMode = 1 THEN
PRINT "bestStartingRank = " + STR$(bestStartingRank)
PRINT "bestStartingColumn = " + STR$(bestStartingColumn)
PRINT "bestFinishingRank = " + STR$(bestFinishingRank)
PRINT "bestFinishingColumn = " + STR$(bestFinishingColumn)
END IF
'-------------- MinMax --------------
CALL MinMax
'No move found? Then resign! Else, make the move!
IF bestFinishingColumn = 0 THEN
LOCATE 7, 55: PRINT "I resign! "
ELSE
'En passant test
'IF enPassantTest = 0 THEN
' bestStartingColumn = 5: bestStartingRank = 2
' bestFinishingColumn = 5: bestFinishingRank = 4
' enPassantTest = 1
'END IF
'Do the best move found
chessboard$(bestFinishingColumn, bestFinishingRank) = chessboard$(bestStartingColumn, bestStartingRank)
chessboard$(bestStartingColumn, bestStartingRank) = ""
'Check for pawn promotion
CALL PawnPromotion
'En passant happened?
IF enPassantHappened = 1 THEN
IF enPassantRank = 3 THEN chessboard$(finishingColumn, 4) = ""
IF enPassantRank = 6 THEN chessboard$(finishingColumn, 5) = ""
END IF
'En passant possible?
enPassantColumn = 0
enPassantRank = 0
IF bestStartingColumn = bestFinishingColumn AND bestStartingRank = 2 AND bestFinishingRank = 4 AND chessboard$(bestFinishingColumn, bestFinishingRank) = "wpawn" THEN
enPassantColumn = bestFinishingColumn
enPassantRank = 3
ELSEIF bestStartingColumn = bestFinishingColumn AND bestStartingRank = 7 AND bestFinishingRank = 5 AND chessboard$(bestFinishingColumn, bestFinishingRank) = "bpawn" THEN
enPassantColumn = bestFinishingColumn
enPassantRank = 6
END IF
SELECT CASE bestStartingColumn
CASE 1
startingColumnText$ = "a"
CASE 2
startingColumnText$ = "b"
CASE 3
startingColumnText$ = "c"
CASE 4
startingColumnText$ = "d"
CASE 5
startingColumnText$ = "e"
CASE 6
startingColumnText$ = "f"
CASE 7
startingColumnText$ = "g"
CASE 8
startingColumnText$ = "h"
END SELECT
SELECT CASE bestFinishingColumn
CASE 1
finishingColumnText$ = "a"
CASE 2
finishingColumnText$ = "b"
CASE 3
finishingColumnText$ = "c"
CASE 4
finishingColumnText$ = "d"
CASE 5
finishingColumnText$ = "e"
CASE 6
finishingColumnText$ = "f"
CASE 7
finishingColumnText$ = "g"
CASE 8
finishingColumnText$ = "h"
END SELECT
LOCATE 7, 55: PRINT "My move: " + startingColumnText$ + STR$(bestStartingRank) + " -> " + finishingColumnText$ + STR$(bestFinishingRank)
CALL DRAWBOARD
'Increase move number of the game
IF playerColor$ = "b" THEN MoveNumber = MoveNumber + 1
'Time for the human to play now...
whoPlays$ = "Human"
CALL PlayerMove
END IF
END SUB
'-----------------------------------------------------------------------------------------------------
SUB initialPosition
chessboard$(1, 1) = "wrook": chessboard$(1, 2) = "wpawn"
chessboard$(2, 1) = "wknight": chessboard$(2, 2) = "wpawn"
chessboard$(3, 1) = "wbishop": chessboard$(3, 2) = "wpawn"
chessboard$(4, 1) = "wqueen": chessboard$(4, 2) = "wpawn"
chessboard$(5, 1) = "wking": chessboard$(5, 2) = "wpawn"
chessboard$(6, 1) = "wbishop": chessboard$(6, 2) = "wpawn"
chessboard$(7, 1) = "wknight": chessboard$(7, 2) = "wpawn"
chessboard$(8, 1) = "wrook": chessboard$(8, 2) = "wpawn"
chessboard$(1, 7) = "bpawn": chessboard$(1, 8) = "brook"
chessboard$(2, 7) = "bpawn": chessboard$(2, 8) = "bknight"
chessboard$(3, 7) = "bpawn": chessboard$(3, 8) = "bbishop"
chessboard$(4, 7) = "bpawn": chessboard$(4, 8) = "bqueen"
chessboard$(5, 7) = "bpawn": chessboard$(5, 8) = "bking"
chessboard$(6, 7) = "bpawn": chessboard$(6, 8) = "bbishop"
chessboard$(7, 7) = "bpawn": chessboard$(7, 8) = "bknight"
chessboard$(8, 7) = "bpawn": chessboard$(8, 8) = "brook"
'---------- TEST ----------
'chessboard$(1, 1) = "wrook": chessboard$(1, 2) = "wpawn"
'chessboard$(2, 1) = "wknight": chessboard$(2, 2) = "bpawn"
'chessboard$(3, 1) = "": chessboard$(3, 2) = "wpawn"
'chessboard$(4, 1) = "": chessboard$(4, 2) = "wpawn"
'chessboard$(5, 1) = "wking": chessboard$(5, 2) = ""
'chessboard$(6, 1) = "": chessboard$(6, 2) = "wpawn"
'chessboard$(7, 1) = "wknight": chessboard$(7, 2) = "wpawn"
'chessboard$(8, 1) = "wrook": chessboard$(8, 2) = ""
'chessboard$(1, 7) = "": chessboard$(1, 8) = "brook"
'chessboard$(2, 7) = "wbishop": chessboard$(2, 8) = "bknight"
'chessboard$(3, 7) = "bpawn": chessboard$(3, 8) = ""
'chessboard$(4, 7) = "bpawn": chessboard$(4, 8) = "bqueen"
'chessboard$(5, 7) = "bpawn": chessboard$(5, 8) = "bking"
'chessboard$(6, 7) = "bpawn": chessboard$(6, 8) = "bbishop"
'chessboard$(7, 7) = "bpawn": chessboard$(7, 8) = "bknight"
'chessboard$(8, 7) = "bpawn": chessboard$(8, 8) = "brook"
'chessboard$(4, 4) = "wpawn"
'chessboard$(2, 4) = "wbishop"
'chessboard$(6, 4) = "wqueen"
'chessboard$(7, 6) = "bbishop"
'---------- CASTLING TEST ----------
'chessboard$(1, 1) = "wrook": chessboard$(1, 2) = "wpawn"
'chessboard$(3, 3) = "wknight": chessboard$(2, 2) = "wpawn"
'chessboard$(6, 4) = "wbishop": chessboard$(3, 2) = "wpawn"
'chessboard$(4, 2) = "wqueen": chessboard$(4, 3) = "wpawn"
'chessboard$(5, 1) = "wking": chessboard$(5, 5) = "wpawn"
'chessboard$(3, 4) = "wbishop": chessboard$(6, 2) = "wpawn"
'chessboard$(6, 3) = "wknight": chessboard$(7, 2) = "wpawn"
'chessboard$(8, 1) = "wrook": chessboard$(8, 2) = "wpawn"
'chessboard$(1, 7) = "bpawn": chessboard$(1, 8) = "brook"
'chessboard$(2, 6) = "bpawn": chessboard$(3, 6) = "bknight"
'chessboard$(3, 7) = "bpawn": chessboard$(1, 4) = "bbishop"
'chessboard$(4, 5) = "bpawn": chessboard$(4, 7) = "bqueen"
'chessboard$(5, 6) = "bpawn": chessboard$(5, 8) = "bking"
'chessboard$(6, 7) = "bpawn": chessboard$(5, 7) = "bbishop"
'chessboard$(7, 7) = "bpawn": chessboard$(8, 6) = "bknight"
'chessboard$(8, 7) = "bpawn": chessboard$(8, 8) = "brook"
'---------- CHECK TEST ----------
'chessboard$(1, 1) = "wrook": chessboard$(1, 2) = "wpawn"
'chessboard$(2, 5) = "wknight": chessboard$(2, 2) = "wpawn"
'chessboard$(6, 4) = "wbishop": chessboard$(3, 2) = "wpawn"
'chessboard$(4, 2) = "wqueen": chessboard$(4, 3) = "wpawn"
'chessboard$(5, 1) = "wking": chessboard$(5, 5) = "wpawn"
'chessboard$(3, 4) = "wbishop": chessboard$(6, 2) = "wpawn"
'chessboard$(6, 3) = "wknight": chessboard$(7, 2) = "wpawn"
'chessboard$(8, 1) = "wrook": chessboard$(8, 2) = "wpawn"
'chessboard$(1, 7) = "bpawn": chessboard$(1, 8) = "brook"
'chessboard$(2, 6) = "bpawn": chessboard$(3, 6) = "bknight"
'chessboard$(3, 7) = "bpawn": chessboard$(1, 4) = "bbishop"
'chessboard$(4, 5) = "bpawn": chessboard$(4, 7) = "bqueen"
'chessboard$(5, 6) = "bpawn": chessboard$(5, 8) = "bking"
'chessboard$(6, 7) = "bpawn": chessboard$(5, 7) = "bbishop"
'chessboard$(7, 7) = "bpawn": chessboard$(8, 4) = "bknight"
'chessboard$(8, 7) = "bpawn": chessboard$(8, 8) = "brook"
'---------- EN PASSANT TEST ----------
'chessboard$(1, 1) = "wrook": chessboard$(1, 2) = "wpawn"
'chessboard$(2, 1) = "wknight": chessboard$(2, 2) = "wpawn"
'chessboard$(3, 1) = "wbishop": chessboard$(3, 4) = "wpawn"
'chessboard$(4, 1) = "wqueen": chessboard$(4, 2) = "wpawn"
'chessboard$(5, 1) = "wking": chessboard$(5, 2) = "wpawn"
'chessboard$(6, 1) = "wbishop": chessboard$(6, 2) = "wpawn"
'chessboard$(7, 1) = "wknight": chessboard$(7, 5) = "wpawn"
'chessboard$(8, 1) = "wrook": chessboard$(8, 2) = "wpawn"
'chessboard$(1, 7) = "bpawn": chessboard$(1, 8) = "brook"
'chessboard$(2, 7) = "bpawn": chessboard$(2, 8) = "bknight"
'chessboard$(3, 7) = "bpawn": chessboard$(3, 8) = "bbishop"
'chessboard$(4, 4) = "bpawn": chessboard$(4, 8) = "bqueen"
'chessboard$(5, 7) = "bpawn": chessboard$(5, 8) = "bking"
'chessboard$(6, 7) = "bpawn": chessboard$(6, 8) = "bbishop"
'chessboard$(7, 7) = "bpawn": chessboard$(7, 8) = "bknight"
'chessboard$(8, 5) = "bpawn": chessboard$(8, 8) = "brook"
END SUB
SUB ElegxosNomimotitas (ENSkakiera() AS STRING, checkForDanger AS INTEGER, startColumn AS INTEGER, startRank AS INTEGER, finishColumn AS INTEGER, finishRank AS INTEGER, MovingPieceEN AS STRING)
'Some GREEK: Skakiera in Greek means "chessboard". NomimotitaEN in Greek means "legality".
'This SUB checks the legality of the moves enetered by the player or thought by the computer
DIM ProsorinoKommatiEN AS STRING
DIM NomimotitaEN
NomimotitaEN = 1 'Set legality (= Nomimotita in Greek) to TRUE. If a problem is found then it will be set to FALSE.
IF (debugMode = 1) THEN
PRINT ""
PRINT "--------------- DEBUG MESSAGE ---------------"
PRINT "ElegxosNomimotitas CALLED"
PRINT ""
PRINT "Start column: " + STR$(startColumn)
PRINT "Start rank : " + STR$(startRank)
PRINT "End column : " + STR$(finishColumn)
PRINT "End rank : " + STR$(finishRank)
PRINT ""
PRINT "Moving piece: " + MovingPieceEN$
PRINT "ENSkakiera(1,1) = " + ENSkakiera(1, 1)
PRINT "ENSkakiera(1,2) = " + ENSkakiera(1, 2)
PRINT ""