def _clear(self):
self.piece_bbs = {}
for pc in piece.all():
self.piece_bbs[pc] = 0L
self.color_bbs = {}
self.color_bbs[0] = 0L
self.color_bbs[1] = 0L
self.squares = {}
for sq in square.all():
self.squares[sq] = 0L
self.castle = castle.parse('KQkq')
self.enp = square.sq()
self.halfmove_clock = 0
self.move_num = 1
def _clear(self):
self.piece_bbs = {}
for pc in piece.all():
self.piece_bbs[pc] = 0L
self.color_bbs = {}
self.color_bbs[0] = 0L
self.color_bbs[1] = 0L
self.squares = {}
for sq in square.all():
self.squares[sq] = 0L
self.castle = castle.parse('KQkq')
self.enp = square.sq()
self.halfmove_clock = 0
self.move_num = 1
with open('attacks.pickle') as f:
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)
self.num_captures += 1
self.num_en_passant += 1
elif prm == piece.KING:
self.num_castles += 1
else:
self.num_promotions += 1
if movegen.king_attacked(self, self.color):
self.num_checks += 1
if self._game_over():
self.num_mates += 1
self.unmake_move()
return nodes
# NOTE(vish): insert constants into locals
for sq in square.all():
locals()[square.str(sq)] = sq
for pc in piece.all():
locals()[piece.str(pc)] = pc
#fen = 'r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq - 0 1'
fen = '8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - - 0 1'
p1 = Position(fen)
print piece.str(p1.squares[square.sq('a8')])
import time
import prettytable
pt = prettytable.PrettyTable()
pt.field_names = ['Depth', 'Nodes', 'Captures', 'E.p.', 'Castles',
'Promotions', 'Checks', 'Mates', 'Time']
pt.align = 'l'