def btrialpawn(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.pawn
global mvs
# pawn may move 2 squares on first move
if rank(sq) == 7 and board.empty(bak(sq)) and board.empty(bak(bak(sq))):
mvs.append((h, "-", sq, bak(bak(sq))))
# pawn moves only one square if beyond original position
if rank(sq) > 2:
if board.manAt(bak(sq)) == 0:
mvs.append((h, "-", sq, bak(sq)))
if man.isWhite(board.manAt(dbr(sq))):
mvs.append((h, "x", sq, dbr(sq), board.manAt(dbr(sq))))
if man.isWhite(board.manAt(dbl(sq))):
mvs.append((h, "x", sq, dbl(sq), board.manAt(dbl(sq))))
# pawn promotes on reaching last rank
if rank(sq) == 2:
if board.manAt(bak(sq)) == 0:
for pmn in [-man.queen, -man.rook, -man.bishop, -man.knight]:
mvs.append((h, "-/", sq, bak(sq), 0, pmn))
if man.isWhite(board.manAt(dbr(sq))):
for pmn in [-man.queen, -man.rook, -man.bishop, -man.knight]:
mvs.append((h, "x/", sq, dbr(sq), board.manAt(dbr(sq)), pmn))
if man.isWhite(board.manAt(dbl(sq))):
for pmn in [-man.queen, -man.rook, -man.bishop, -man.knight]:
mvs.append((h, "x/", sq, dbl(sq), board.manAt(dbl(sq)), pmn))
# en passant
if len(board.history) > 0:
mv = board.lastMove()
if tag(mv) == "-" and board.manAt(nsq(mv)) == man.pawn and rank(
osq(mv)) == 2 and rank(nsq(mv)) == 4:
if nsq(mv) in [rgt(sq), lft(sq)]:
mvs.append((h, "xep", sq, bak(nsq(mv))))
def addMan(m, sq):
global theBoard, whiteKingAt, blackKingAt, whiteMen, blackMen
if not man.isMan(m):
print "addman: bad value for man: %s" % m
elif not square.isq(sq):
print "addman: bad value for square: %s" % sq
elif man.isPawn(m) and (square.lastrank(sq) or square.firstrank(sq)):
print "addman: pawns not allowed on rank" % rank(sq)
elif occupied(sq):
print "addman: square %s is occupied" % sq
elif man.isWhiteKing(m) and not (whiteKingAt == 999):
print "addman: only one white king allowed"
elif man.isBlackKing(m) and not (blackKingAt == 999):
print "addman: only one black king allowed"
else:
#assert hash == zobrist.hashBoard()
if man.isWhite(m):
if man.isKing(m):
whiteKingAt = sq
whiteMen.add(sq)
else:
if man.isKing(m):
blackKingAt = sq
blackMen.add(sq)
zobrist.PlaceMan(sq, m)
def umkcapture(mv):
assert tag(mv) == "x"
assert man.isMan(mn(mv))
assert not color(mv) == 'white' or man.isBlack(mn(mv))
assert not color(mv) == 'black' or man.isWhite(mn(mv))
assert board.valid()
umkdash(mv)
# board.theBoard[nsq(mv)] = cmn(mv) # WHAT ???
# note the theBoard will be invalid at this point
if color(mv) == 'white':
assert man.isBlack(board.manAt(nsq(mv)))
board.blackMen.add(nsq(mv))
else:
assert man.isWhite(board.manAt(nsq(mv)))
board.whiteMen.add(nsq(mv))
# after the above board maintennance it will be valid again
assert board.valid()
def btrialrook(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.rook
global mvs
for dir in [fwd, rgt, bak, lft]:
s = dir(sq)
done = False
while not s == None and not done:
if board.empty(s):
mvs.append((h, "-", sq, s))
s = dir(s)
elif man.isWhite(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
done = True
elif man.isBlack(board.manAt(s)):
done = True
def btrialbishop(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.bishop
global mvs
for dir in [dfr, dfl, dbr, dbl]:
s = dir(sq)
done = False
while not s == None and not done:
if board.empty(s):
mvs.append((h, "-", sq, s))
s = dir(s)
elif man.isWhite(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
done = True
elif man.isBlack(board.manAt(s)):
done = True
def btrialking(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.king
global mvs
for dir in [fwd, dfr, rgt, dbr, bak, dbl, lft, dfl]:
s = dir(sq)
if board.empty(s):
mvs.append((h, "-", sq, s))
elif man.isWhite(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
elif man.isBlack(board.manAt(s)):
pass
if board.blackAllowOO and board.empty(f8) and board.empty(g8):
mvs.append((h, "OO", e8))
if board.blackAllowOOO and board.empty(d8) and board.empty(
c8) and board.empty(b8):
mvs.append((h, "OOO", e8))
def wtrialking(h, sq):
assert board.whiteToMove()
assert h == len(board.history)
assert board.manAt(sq) == man.king
global mvs
for dir in [fwd, dfr, rgt, dbr, bak, dbl, lft, dfl]:
s = dir(sq)
if board.empty(s):
mvs.append((h, "-", sq, s))
elif man.isBlack(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
elif man.isWhite(board.manAt(s)):
pass
if board.whiteAllowOO and board.empty(f1) and board.empty(g1):
mvs.append((h, "OO", e1))
if board.whiteAllowOOO and board.empty(d1) and board.empty(
c1) and board.empty(b1):
mvs.append((h, "OOO", e1))
def btrialknight(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.knight
global mvs
for s in [
dfr(fwd(sq)),
dfr(rgt(sq)),
dbr(rgt(sq)),
dbr(bak(sq)),
dbl(bak(sq)),
dbl(lft(sq)),
dfl(lft(sq)),
dfl(fwd(sq))
]:
if board.empty(s):
mvs.append((h, "-", sq, s))
elif man.isWhite(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
def btrialqueen(h, sq):
assert board.blackToMove()
assert h == len(board.history)
assert board.manAt(sq) == -man.queen
global mvs
for dir in [fwd, rgt, bak, lft, dfr, dfl, dbr, dbl]:
s = dir(sq)
done = False
while not s == None and not done:
if board.empty(s):
mvs.append((h, "-", sq, s))
s = dir(s)
elif man.isWhite(board.manAt(s)):
mvs.append((h, "x", sq, s, board.manAt(s)))
done = True
elif man.isBlack(board.manAt(s)):
done = True
else:
print "error in btrialqueen"
sys.exit(1)
def wtrials(h, sqset):
assert board.whiteToMove()
assert h == len(board.history)
global mvs
mvs = []
for sq in sqset:
assert man.isWhite(board.manAt(sq))
if board.manAt(sq) == man.pawn:
wtrialpawn(h, sq)
elif board.manAt(sq) == man.knight:
wtrialknight(h, sq)
elif board.manAt(sq) == man.bishop:
wtrialbishop(h, sq)
elif board.manAt(sq) == man.rook:
wtrialrook(h, sq)
elif board.manAt(sq) == man.queen:
wtrialqueen(h, sq)
elif board.manAt(sq) == man.king:
wtrialking(h, sq)
else:
print "wtrials: square not occupied"
return mvs
def mkcapture(mv):
assert tag(mv) == "x"
assert not color(mv) == 'white' or man.isBlack(board.manAt(nsq(mv)))
assert not color(mv) == 'black' or man.isWhite(board.manAt(nsq(mv)))
assert board.valid()
assert not man.isKing(board.manAt(nsq(mv)))
mkdash(mv)
if color(mv) == 'white':
board.blackMen.remove(nsq(mv)) # <<--------
# capturing rooks on original squares affects castling
if nsq(mv) == h8:
board.blackAllowOO = False
elif nsq(mv) == a8:
board.blackAllowOOO = False
else:
board.whiteMen.remove(nsq(mv))
# capturing rooks on original squares affects castling
if nsq(mv) == h1:
board.whiteAllowOO = False
elif nsq(mv) == a1:
board.whiteAllowOOO = False
assert board.valid()
def valid():
#return True # disabled to speed up testing
if not hash == zobrist.hashBoard():
dump()
assert hash == zobrist.hashBoard()
assert theBoard[whiteKingAt] == man.king
# debug
if theBoard[blackKingAt] != -man.king:
print "board 136: dumping"
dump()
assert theBoard[blackKingAt] == -man.king
for sq in xrange(0, 64):
if manAt(sq) == 0:
assert (sq in whiteMen) == False
assert (sq in blackMen) == False
elif man.isWhite(manAt(sq)):
assert (sq in whiteMen) == True
# debug
if (sq in blackMen):
print "board 147: manAt(sq)=", manAt(sq)
print "board 148: sq=", sq
print "board 149: blackMen=", blackMen
dump()
assert (sq in blackMen) == False
elif man.isBlack(manAt(sq)):
# debug
if (sq in whiteMen):
print "board 155: manAt(sq)=", manAt(sq)
print "board 156: sq=", sq
print "board 157: whiteMen=", whiteMen
dump()
assert (sq in whiteMen) == False
assert (sq in blackMen) == True
else:
assert False
return True