def str(mv):
if promotion(mv) == ivory_piece.KING:
return 'O-O-O' if square.file(tosq(mv)) == 'c' else 'O-O'
out = []
if piece(mv) == ivory_piece.PAWN:
if is_capture(mv):
out.append(square.file(frsq(mv)))
out.append('x')
else:
out.append(ivory_piece.str(piece(mv)).upper())
if is_show_file(mv):
out.append(square.file(frsq(mv)))
if is_show_rank(mv):
out.append(square.rank(frsq(mv)))
if is_capture(mv):
out.append('x')
out.append(square.str(tosq(mv)))
if promotion(mv):
print square.str(frsq(mv)), square.str(tosq(mv))
out.append('=')
out.append(ivory_piece.str(promotion(mv)).upper())
if is_check(mv):
out.append('+')
if is_mate(mv):
out.append('#')
return ''.join(out)
def str(mv):
if promotion(mv) == ivory_piece.KING:
return 'O-O-O' if square.file(tosq(mv)) == 'c' else 'O-O'
out = []
if piece(mv) == ivory_piece.PAWN:
if is_capture(mv):
out.append(square.file(frsq(mv)))
out.append('x')
else:
out.append(ivory_piece.str(piece(mv)).upper())
if is_show_file(mv):
out.append(square.file(frsq(mv)))
if is_show_rank(mv):
out.append(square.rank(frsq(mv)))
if is_capture(mv):
out.append('x')
out.append(square.str(tosq(mv)))
if promotion(mv):
print square.str(frsq(mv)), square.str(tosq(mv))
out.append('=')
out.append(ivory_piece.str(promotion(mv)).upper())
if is_check(mv):
out.append('+')
if is_mate(mv):
out.append('#')
return ''.join(out)
def make_move(self, mv):
cl = self.color
half, cast, enp = self.halfmove_clock, self.castle, self.enp
self.color = not self.color
opp_cl = self.color
if cl == 0:
self.move_num += 1
self.enp = 0L
frsq = move.frsq(mv)
tosq = move.tosq(mv)
prom = move.promotion(mv)
pc = self.clear_square(tosq)
mvpc = move.piece(mv)
if pc or mvpc == piece.PAWN:
self.halfmove_clock = 0
else:
self.halfmove_clock += 1
if prom and prom != piece.PAWN and prom != piece.KING:
mvpc = prom
self.set_square(tosq, mvpc, cl)
self.clear_square(frsq)
if tosq == self.ROOK_SQUARES[opp_cl][0]:
self.castle &= ~castle.QUEEN[opp_cl]
elif tosq == self.ROOK_SQUARES[opp_cl][1]:
self.castle &= ~castle.KING[opp_cl]
if mvpc == piece.KING:
self.castle &= ~castle.QUEEN[cl]
self.castle &= ~castle.KING[cl]
if prom == piece.KING:
rfrsq, rtosq = self.CASTLE_SQUARE_MAP[tosq]
rook = self.clear_square(rfrsq)
self.set_square(rtosq, rook, cl)
elif mvpc == piece.ROOK:
if frsq == self.ROOK_SQUARES[cl][0]:
self.castle &= ~castle.QUEEN[cl]
elif frsq == self.ROOK_SQUARES[cl][1]:
self.castle &= ~castle.KING[cl]
elif mvpc == piece.PAWN:
back = square.n(tosq) if opp_cl == 1 else square.s(tosq)
if prom == piece.PAWN:
self.clear_square(back)
else:
diff = square.rank(frsq) - square.rank(tosq)
if diff == 2 or diff == -2:
self.enp = back
self.moves.append((mv, pc, half, cast, enp))
return pc
def make_move(self, mv):
cl = self.color
half, cast, enp = self.halfmove_clock, self.castle, self.enp
self.color = not self.color
opp_cl = self.color
if cl == 0:
self.move_num += 1
self.enp = 0L
frsq = move.frsq(mv)
tosq = move.tosq(mv)
prom = move.promotion(mv)
pc = self.clear_square(tosq)
mvpc = move.piece(mv)
if pc or mvpc == piece.PAWN:
self.halfmove_clock = 0
else:
self.halfmove_clock += 1
if prom and prom != piece.PAWN and prom != piece.KING:
mvpc = prom
self.set_square(tosq, mvpc, cl)
self.clear_square(frsq)
if tosq == self.ROOK_SQUARES[opp_cl][0]:
self.castle &= ~castle.QUEEN[opp_cl]
elif tosq == self.ROOK_SQUARES[opp_cl][1]:
self.castle &= ~castle.KING[opp_cl]
if mvpc == piece.KING:
self.castle &= ~castle.QUEEN[cl]
self.castle &= ~castle.KING[cl]
if prom == piece.KING:
rfrsq, rtosq = self.CASTLE_SQUARE_MAP[tosq]
rook = self.clear_square(rfrsq)
self.set_square(rtosq, rook, cl)
elif mvpc == piece.ROOK:
if frsq == self.ROOK_SQUARES[cl][0]:
self.castle &= ~castle.QUEEN[cl]
elif frsq == self.ROOK_SQUARES[cl][1]:
self.castle &= ~castle.KING[cl]
elif mvpc == piece.PAWN:
back = square.n(tosq) if opp_cl == 1 else square.s(tosq)
if prom == piece.PAWN:
self.clear_square(back)
else:
diff = square.rank(frsq) - square.rank(tosq)
if diff == 2 or diff == -2:
self.enp = back
self.moves.append((mv, pc, half, cast, enp))
return pc
def _disambiguate_moves(self, moves):
files = {}
ranks = {}
unamb = list(moves)
for mv in moves:
if move.promotion(mv):
continue
ps = (move.piece(mv), move.tosq(mv))
files.setdefault(ps, [])
ranks.setdefault(ps, [])
files[ps].append(square.file(move.frsq(mv)))
ranks[ps].append(square.rank(move.frsq(mv)))
opp_cl = not self.color
for i, mv in enumerate(moves):
ps = (move.piece(mv), move.tosq(mv))
if files[ps].count(square.file(move.frsq(mv))) > 1:
unamb[i] = moves[i].set_show_rank()
if ranks[ps].count(square.rank(move.frsq(mv))) > 1:
unamb[i] = moves[i].set_show_file()
return unamb
def _disambiguate_moves(self, moves):
files = {}
ranks = {}
unamb = list(moves)
for mv in moves:
if move.promotion(mv):
continue
ps = (move.piece(mv), move.tosq(mv))
files.setdefault(ps, [])
ranks.setdefault(ps, [])
files[ps].append(square.file(move.frsq(mv)))
ranks[ps].append(square.rank(move.frsq(mv)))
opp_cl = not self.color
for i, mv in enumerate(moves):
ps = (move.piece(mv), move.tosq(mv))
if files[ps].count(square.file(move.frsq(mv))) > 1:
unamb[i] = moves[i].set_show_rank()
if ranks[ps].count(square.rank(move.frsq(mv))) > 1:
unamb[i] = moves[i].set_show_file()
return unamb
ATTACKS, MASK, OCC_ATTACKS = pickle.load(f)
else:
ATTACKS = {}
ATTACKS[piece.BISHOP] = {}
ATTACKS[piece.ROOK] = {}
ATTACKS[piece.KING] = {}
ATTACKS[piece.KNIGHT] = {}
MASK = {}
MASK[piece.BISHOP] = {}
MASK[piece.ROOK] = {}
OCC_ATTACKS = {}
OCC_ATTACKS[piece.BISHOP] = {}
OCC_ATTACKS[piece.ROOK] = {}
for sq in square.all():
rank = square.BIT_RANKS[square.rank(sq)]
file = square.BIT_FILES[square.file(sq)]
a1h8 = square.BIT_A1H8[square.a1h8(sq)]
a8h1 = square.BIT_A8H1[square.a8h1(sq)]
ATTACKS[piece.BISHOP][sq] = a1h8 | a8h1
MASK[piece.BISHOP][sq] = (
(a1h8 & ~bitboard.msb(a1h8) & ~bitboard.lsb(a1h8)) |
(a8h1 & ~bitboard.msb(a8h1) & ~bitboard.lsb(a8h1)))
ATTACKS[piece.ROOK][sq] = rank | file
MASK[piece.ROOK][sq] = (
(rank & ~bitboard.msb(rank) & ~bitboard.lsb(rank)) |
(file & ~bitboard.msb(file) & ~bitboard.lsb(file)))
OCC_ATTACKS[piece.BISHOP][sq] = _occ_attack_table(sq, piece.BISHOP)
OCC_ATTACKS[piece.ROOK][sq] = _occ_attack_table(sq, piece.ROOK)
ATTACKS[piece.KING][sq] = _king_moves(sq)
ATTACKS, MASK, OCC_ATTACKS = pickle.load(f)
else:
ATTACKS = {}
ATTACKS[piece.BISHOP] = {}
ATTACKS[piece.ROOK] = {}
ATTACKS[piece.KING] = {}
ATTACKS[piece.KNIGHT] = {}
MASK = {}
MASK[piece.BISHOP] = {}
MASK[piece.ROOK] = {}
OCC_ATTACKS = {}
OCC_ATTACKS[piece.BISHOP] = {}
OCC_ATTACKS[piece.ROOK] = {}
for sq in square.all():
rank = square.BIT_RANKS[square.rank(sq)]
file = square.BIT_FILES[square.file(sq)]
a1h8 = square.BIT_A1H8[square.a1h8(sq)]
a8h1 = square.BIT_A8H1[square.a8h1(sq)]
ATTACKS[piece.BISHOP][sq] = a1h8 | a8h1
MASK[piece.BISHOP][sq] = (
(a1h8 & ~bitboard.msb(a1h8) & ~bitboard.lsb(a1h8)) |
(a8h1 & ~bitboard.msb(a8h1) & ~bitboard.lsb(a8h1))
)
ATTACKS[piece.ROOK][sq] = rank | file
MASK[piece.ROOK][sq] = (
(rank & ~bitboard.msb(rank) & ~bitboard.lsb(rank)) |
(file & ~bitboard.msb(file) & ~bitboard.lsb(file))
)
OCC_ATTACKS[piece.BISHOP][sq] = _occ_attack_table(sq, piece.BISHOP)
