def main():
logging.basicConfig(filename='sunfish.log', level=logging.DEBUG)
out = Unbuffered(sys.stdout)
def output(line):
print(line, file=out)
logging.debug(line)
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = True
stack = []
while True:
if stack:
smove = stack.pop()
else: smove = input()
logging.debug(f'>>> {smove} ')
if smove == 'quit':
break
elif smove == 'uci':
output('id name Sunfish')
output('id author Thomas Ahle & Contributors')
output('uciok')
elif smove == 'isready':
output('readyok')
elif smove == 'ucinewgame':
stack.append('position fen ' + tools.FEN_INITIAL)
elif smove.startswith('position fen'):
_, _, fen = smove.split(' ', 2)
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
elif smove.startswith('position startpos'):
params = smove.split(' ')
pos = tools.parseFEN(tools.FEN_INITIAL)
color = WHITE
if len(params) > 2 and params[2] == 'moves':
for move in params[3:]:
pos = pos.move(tools.mparse(color, move))
color = 1 - color
elif smove.startswith('go'):
# default options
depth = 1000
movetime = -1
_, *params = smove.split(' ')
for param, val in zip(*2*(iter(params),)):
if param == 'depth':
depth = int(val)
if param == 'movetime':
movetime = int(val)
if param == 'wtime':
our_time = int(val)
if param == 'btime':
opp_time = int(val)
moves_remain = 40
start = time.time()
ponder = None
for sdepth, _move, _score in searcher.search(pos):
moves = tools.pv(searcher, pos, include_scores=False)
if show_thinking:
entry = searcher.tp_score.get((pos, sdepth, True))
score = int(round((entry.lower + entry.upper)/2))
usedtime = int((time.time() - start) * 1000)
moves_str = moves if len(moves) < 15 else ''
output('info depth {} score cp {} time {} nodes {} pv {}'.format(sdepth, score, usedtime, searcher.nodes, moves_str))
if len(moves) > 5:
ponder = moves[1]
if movetime > 0 and (time.time() - start) * 1000 > movetime:
break
if (time.time() - start) * 1000 > our_time/moves_remain:
break
if sdepth >= depth:
break
entry = searcher.tp_score.get((pos, sdepth, True))
m, s = searcher.tp_move.get(pos), entry.lower
# We only resign once we are mated.. That's never?
if s == -sunfish.MATE_UPPER:
output('resign')
else:
moves = moves.split(' ')
if len(moves) > 1:
output(f'bestmove {moves[0]} ponder {moves[1]}')
else:
output('bestmove ' + moves[0])
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
else:
pass
def main():
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = False
options = {}
history = []
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
print('>>>', smove, file=sys.stderr)
sys.stderr.flush() # For Python 2.7 support
if smove == 'quit':
break
elif smove == 'protover 2':
print('feature done=0')
print('feature myname="Sunfish"')
print('feature usermove=1')
print('feature setboard=1')
print('feature ping=1')
print('feature sigint=0')
print('feature variants="normal"')
print('feature option="qs_limit -spin {} -100 1000"'.format(
sunfish.QS_LIMIT))
print('feature option="eval_roughness -spin {} 1 1000"'.format(
sunfish.EVAL_ROUGHNESS))
print('feature option="draw_test -spin {} 0 1"'.format(
int(sunfish.DRAW_TEST)))
print('feature done=1')
elif smove == 'new':
stack.append('setboard ' + tools.FEN_INITIAL)
# Clear out the old searcher, including the tables
searcher = sunfish.Searcher()
del history[:]
elif smove.startswith('setboard'):
_, fen = smove.split(' ', 1)
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
del history[:]
elif smove == 'force':
forced = True
elif smove.startswith('option'):
_, aeqb = smove.split(maxsplit=1)
if '=' in aeqb:
name, val = aeqb.split('=')
else:
name, val = aeqb, True
if name == 'qs_limit':
sunfish.QS_LIMIT = int(val)
if name == 'eval_roughness':
sunfish.EVAL_ROUGHNESS = int(val)
if name == 'draw_test':
sunfish.DRAW_TEST = bool(int(val))
options[name] = val
elif smove == 'go':
forced = False
moves_remain = 40
use = our_time / moves_remain
# Let's follow the clock of our opponent
if our_time >= 100 and opp_time >= 100:
use *= our_time / opp_time
start = time.time()
for ply, move, score in searcher.search(pos, history):
entry = searcher.tp_score.get((pos, ply, True))
score = int(round((entry.lower + entry.upper) / 2))
if show_thinking:
used = int((time.time() - start) * 100 + .5)
moves = tools.pv(searcher, pos, include_scores=False)
seldepth = 0
nps = int(searcher.nodes / (time.time() - start) + .5)
print('{:>3} {:>8} {:>8} {:>13} {:>1} {:>4} \t{}'.format(
ply, score, used, searcher.nodes, seldepth, nps,
moves))
print('# Hashfull: {:.3f}%; {} <= score < {}'.format(
len(searcher.tp_score) / sunfish.TABLE_SIZE * 100,
entry.lower, entry.upper))
# If found mate, just stop
if entry.lower >= sunfish.MATE_UPPER:
break
if time.time() - start > use / 100:
break
# We sometimes make illegal moves when we're losing,
# so it's safer to just resign.
if score == -sunfish.MATE_UPPER:
print('resign')
else:
print('move', tools.mrender(pos, move))
pos = pos.move(move)
history.append(pos)
color = 1 - color
elif smove.startswith('ping'):
_, N = smove.split()
print('pong', N)
elif smove.startswith('usermove'):
_, smove = smove.split()
m = tools.mparse(color, smove)
pos = pos.move(m)
history.append(pos)
color = 1 - color
if not forced:
stack.append('go')
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
elif smove.startswith('perft'):
start = time.time()
for d in range(1, 10):
res = sum(1 for _ in tools.collect_tree_depth(
tools.expand_position(pos), d))
print('{:>8} {:>8}'.format(res, time.time() - start))
elif smove.startswith('post'):
show_thinking = True
elif smove.startswith('nopost'):
show_thinking = False
elif any(
smove.startswith(x)
for x in ('xboard', 'random', 'hard', 'accepted', 'level',
'easy', 'st', 'result', '?')):
print('# Ignoring command {}.'.format(smove))
elif smove.startswith('reject'):
_, feature = smove.split(
)[:2] # split(maxsplit=2) doesnt work in python2.7
print(
'# Warning ({} rejected): Might not work as expected.'.format(
feature))
else:
print('# Warning (unkown command): {}. Treating as move.'.format(
smove))
stack.append('usermove {}'.format(smove))
def main():
parser = argparse.ArgumentParser()
parser.add_argument('module',
help='sunfish.py file (without .py)',
type=str,
default='sunfish_nnue',
nargs='?')
parser.add_argument('--tables',
metavar='pst',
help='alternative pst table',
type=str,
default=None)
args = parser.parse_args()
sunfish = importlib.import_module(args.module)
if args.tables is not None:
pst_module = importlib.import_module(args.tables)
sunfish.pst = pst_module.pst
logging.basicConfig(filename='sunfish.log', level=logging.DEBUG)
out = Unbuffered(sys.stdout)
def output(line):
print(line, file=out)
logging.debug(line)
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = True
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
logging.debug(f'>>> {smove} ')
if smove == 'quit':
break
elif smove == 'uci':
output('id name Sunfish')
output('id author Thomas Ahle & Contributors')
output('uciok')
elif smove == 'isready':
output('readyok')
elif smove == 'ucinewgame':
stack.append('position fen ' + tools.FEN_INITIAL)
# syntax specified in UCI
# position [fen | startpos ] moves ....
elif smove.startswith('position'):
params = smove.split(' ')
idx = smove.find('moves')
if idx >= 0:
moveslist = smove[idx:].split()[1:]
else:
moveslist = []
if params[1] == 'fen':
if idx >= 0:
fenpart = smove[:idx]
else:
fenpart = smove
_, _, fen = fenpart.split(' ', 2)
elif params[1] == 'startpos':
fen = tools.FEN_INITIAL
else:
pass
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
for move in moveslist:
pos = pos.move(tools.mparse(color, move))
color = 1 - color
elif smove.startswith('go'):
# default options
depth = 1000
movetime = -1
_, *params = smove.split(' ')
for param, val in zip(*2 * (iter(params), )):
if param == 'depth':
depth = int(val)
if param == 'movetime':
movetime = int(val)
if param == 'wtime':
our_time = int(val)
if param == 'btime':
opp_time = int(val)
moves_remain = 40
start = time.time()
ponder = None
for sdepth, _move, _score in searcher.search(pos):
moves = tools.pv(searcher, pos, include_scores=False)
if show_thinking:
entry = searcher.tp_score.get((pos, sdepth, True))
score = int(round((entry.lower + entry.upper) / 2))
usedtime = int((time.time() - start) * 1000)
moves_str = moves if len(moves) < 15 else ''
output('info depth {} score cp {} time {} nodes {} pv {}'.
format(sdepth, score, usedtime, searcher.nodes,
moves_str))
if len(moves) > 5:
ponder = moves[1]
if movetime > 0 and (time.time() - start) * 1000 > movetime:
break
if (time.time() - start) * 1000 > our_time / moves_remain:
break
if sdepth >= depth:
break
entry = searcher.tp_score.get((pos, sdepth, True))
m, s = searcher.tp_move.get(pos), entry.lower
# We only resign once we are mated.. That's never?
# if s == -sunfish.MATE_UPPER:
# output('resign')
# else:
moves = moves.split(' ')
if len(moves) > 1:
output(f'bestmove {moves[0]} ponder {moves[1]}')
else:
output('bestmove ' + moves[0])
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
else:
pass
def main():
logging.basicConfig(filename='sunfish.log', level=logging.DEBUG)
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = True
# print name of chess engine
print('Sunfish')
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
logging.debug(smove)
if smove == 'quit':
break
elif smove == 'uci':
print('id name Sunfish')
print('id author Thomas Ahle')
print('uciok')
elif smove == 'isready':
print('readyok')
elif smove == 'ucinewgame':
stack.append('position fen ' + tools.FEN_INITIAL)
elif smove.startswith('position fen'):
params = smove.split(' ', 2)
if params[1] == 'fen':
fen = params[2]
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
elif smove.startswith('position startpos'):
params = smove.split(' ')
#startpos
pos = tools.parseFEN(tools.FEN_INITIAL)
color = WHITE
i = 0
while i < len(params):
param = params[i]
if param == 'moves':
i += 1
while i < len(params):
mymove = params[i]
logging.debug(mymove)
m = tools.mparse(color, mymove)
logging.debug(m)
pos = pos.move(m)
color = 1 - color
i += 1
i += 1
elif smove.startswith('go'):
# default options
depth = 1000
movetime = -1
# parse parameters
params = smove.split(' ')
if len(params) == 1: continue
i = 0
while i < len(params):
param = params[i]
if param == 'depth':
i += 1
depth = int(params[i])
if param == 'movetime':
i += 1
movetime = int(params[i])
if param == 'wtime':
i += 1
our_time = int(params[i])
if param == 'btime':
i += 1
opp_time = int(params[i])
i += 1
forced = False
moves_remain = 40
start = time.time()
ponder = None
for _ in searcher._search(pos):
moves = tools.pv(searcher, pos, include_scores=False)
if show_thinking:
entry = searcher.tp_score.get((pos, searcher.depth, True))
score = int(round((entry.lower + entry.upper) / 2))
usedtime = int((time.time() - start) * 1000)
moves_str = moves if len(moves) < 15 else ''
print('info depth {} score cp {} time {} nodes {} pv {}'.
format(searcher.depth, score, usedtime,
searcher.nodes, moves_str))
logging.debug(
'info depth {} score cp {} time {} nodes {} pv {}'.
format(searcher.depth, score, usedtime, searcher.nodes,
moves_str))
if len(moves) > 5:
ponder = moves[1]
if movetime > 0 and (time.time() - start) * 1000 > movetime:
break
if (time.time() - start) * 1000 > our_time / moves_remain:
break
if searcher.depth >= depth:
break
entry = searcher.tp_score.get((pos, searcher.depth, True))
m, s = searcher.tp_move.get(pos), entry.lower
# We only resign once we are mated.. That's never?
if s == -sunfish.MATE_UPPER:
print('resign')
logging.debug('resign')
else:
moves = moves.split(' ')
if len(moves) > 1:
#print('bestmove ' + moves[0] + ' ponder ' + moves[1])
print('bestmove ' + moves[0])
logging.debug('bestmove ' + moves[0])
else:
print('bestmove ' + moves[0])
logging.debug('bestmove ' + moves[0])
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
else:
pass
def main(eng):
parser = argparse.ArgumentParser()
parser.add_argument('module',
help='chessEngine.py file (without .py)',
type=str,
default='crapbox',
nargs='?')
args = parser.parse_args()
''' look at this later
sunfish = importlib.import_module(args.module)
if args.tables is not None:
pst_module = importlib.import_module(args.tables)
sunfish.pst = pst_module.pst
logging.basicConfig(filename='sunfish.log', level=logging.DEBUG)
'''
out = Unbuffered(sys.stdout)
def output(line):
print(line)
#print(line, file=out)
#logging.debug(line)
pos = tools.parseFEN(tools.FEN_INITIAL)
'''
searcher = sunfish.Searcher()
'''
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = False
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
logging.debug(f'>>> {smove} ')
if smove == 'quit':
break
elif smove == 'uci':
output('id name Cristiceps')
output('id author Benjamin Christie')
output('uciok')
elif smove == 'isready':
output('readyok')
elif smove == 'ucinewgame':
stack.append('position fen ' + tools.FEN_INITIAL)
# syntax specified in UCI
# position [fen | startpos ] moves ....
elif smove.startswith('position'):
params = smove.split(' ')
idx = smove.find('moves')
if idx >= 0:
moveslist = smove[idx:].split()[1:]
else:
moveslist = []
if params[1] == 'fen':
if idx >= 0:
fenpart = smove[:idx]
else:
fenpart = smove
_, _, fen = fenpart.split(' ', 2)
elif params[1] == 'startpos':
fen = tools.FEN_INITIAL
else:
pass
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
for move in moveslist:
pos = pos.move(tools.mparse(color, move))
color = 1 - color
elif smove.startswith('go'):
# default options
depth = 1000
movetime = -1
_, *params = smove.split(' ')
for param, val in zip(*2 * (iter(params), )):
if param == 'depth':
depth = int(val)
if param == 'movetime':
movetime = int(val)
if param == 'wtime':
our_time = int(val)
if param == 'btime':
opp_time = int(val)
moves_remain = 40
start = time.time()
ponder = None
renderedFen = tools.renderFEN(pos)
'''
eng = customEngine.Engine()
currMove = str(eng.getRandomMove(renderedFen))
'''
currMove = str(eng.getMove(renderedFen))
output("info currmove " + currMove)
time.sleep(0.1)
output("bestmove " + currMove)
'''
if sdepth >= depth:
break
'''
elif smove.startswith('stop'):
output("bestmove " + currMove)
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
else:
pass
def main():
parser = argparse.ArgumentParser()
parser.add_argument('module',
help='sunfish.py file (without .py)',
type=str,
default='sunfish',
nargs='?')
parser.add_argument('--tables',
metavar='pst',
help='alternative pst table',
type=str,
default=None)
args = parser.parse_args()
sunfish = importlib.import_module(args.module)
if args.tables is not None:
pst_module = importlib.import_module(args.tables)
sunfish.pst = pst_module.pst
sunfish.QS_LIMIT = pst_module.QS_LIMIT
sunfish.EVAL_ROUGHNESS = pst_module.EVAL_ROUGHNESS
sys.stdout = tools.Unbuffered(sys.stdout)
now = datetime.now()
path = 'sunfish-' + now.strftime("%d:%m:%Y-%H:%M:%S:%f") + '.log'
sys.stderr = open(path, 'a')
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = False
options = {}
history = []
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
print('>>>', smove, file=sys.stderr)
sys.stderr.flush() # For Python 2.7 support
if smove == 'quit':
break
elif smove == 'protover 2':
print('feature done=0')
print('feature myname="Sunfish"')
print('feature usermove=1')
print('feature setboard=0'
) # Removing setboard because of lichess bug
print('feature ping=1')
print('feature sigint=0')
print('feature nps=0')
print('feature variants="normal"')
print('feature option="qs_limit -spin {} -100 1000"'.format(
sunfish.QS_LIMIT))
print('feature option="eval_roughness -spin {} 1 1000"'.format(
sunfish.EVAL_ROUGHNESS))
print('feature option="draw_test -spin {} 0 1"'.format(
int(sunfish.DRAW_TEST)))
print('feature done=1')
elif smove == 'new':
stack.append('setboard ' + tools.FEN_INITIAL)
# Clear out the old searcher, including the tables
searcher = sunfish.Searcher()
del history[:]
elif smove.startswith('setboard'):
_, fen = smove.split(' ', 1)
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
del history[:]
elif smove == 'force':
forced = True
elif smove.startswith('option'):
_, aeqb = smove.split(maxsplit=1)
if '=' in aeqb:
name, val = aeqb.split('=')
else:
name, val = aeqb, True
if name == 'qs_limit':
sunfish.QS_LIMIT = int(val)
if name == 'eval_roughness':
sunfish.EVAL_ROUGHNESS = int(val)
if name == 'draw_test':
sunfish.DRAW_TEST = bool(int(val))
options[name] = val
elif smove == 'go':
forced = False
moves_remain = 40
use = our_time / moves_remain
# Let's follow the clock of our opponent
if our_time >= 100 and opp_time >= 100:
use *= our_time / opp_time
start = time.time()
for ply, move, score in searcher.search(pos, history):
entry = searcher.tp_score.get((pos, ply, True))
score = int(round((entry.lower + entry.upper) / 2))
if show_thinking:
seconds = time.time() - start
used_ms = int(seconds * 100 + .5)
moves = tools.pv(searcher, pos, include_scores=False)
print('{:>3} {:>8} {:>8} {:>13} \t{}'.format(
ply, score, used_ms, searcher.nodes, moves))
print('# {} n/s'.format(round(searcher.nodes / seconds)))
print('# Hashfull: {:.3f}%; {} <= score < {}'.format(
len(searcher.tp_score) / sunfish.TABLE_SIZE * 100,
entry.lower, entry.upper))
# If found mate, just stop
if entry.lower >= sunfish.MATE_UPPER:
break
if time.time() - start > use / 100:
break
# We sometimes make illegal moves when we're losing,
# so it's safer to just resign.
if score == -sunfish.MATE_UPPER:
print('resign')
else:
print('move', tools.mrender(pos, move))
pos = pos.move(move)
history.append(pos)
color = 1 - color
elif smove.startswith('ping'):
_, N = smove.split()
print('pong', N)
elif smove.startswith('usermove'):
_, smove = smove.split()
m = tools.mparse(color, smove)
pos = pos.move(m)
history.append(pos)
color = 1 - color
if not forced:
stack.append('go')
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
elif smove.startswith('perft'):
start = time.time()
for d in range(1, 10):
res = sum(1 for _ in tools.collect_tree_depth(
tools.expand_position(pos), d))
print('{:>8} {:>8}'.format(res, time.time() - start))
elif smove.startswith('post'):
show_thinking = True
elif smove.startswith('nopost'):
show_thinking = False
elif any(
smove.startswith(x)
for x in ('xboard', 'random', 'hard', 'accepted', 'level',
'easy', 'st', 'result', '?', 'name', 'rating')):
print('# Ignoring command {}.'.format(smove))
elif smove.startswith('reject'):
_, feature = smove.split(
)[:2] # split(maxsplit=2) doesnt work in python2.7
if feature == 'sigint':
signal.signal(signal.SIGINT, signal.SIG_IGN)
print(
'# Warning ({} rejected): Might not work as expected.'.format(
feature))
else:
print('# Warning (unkown command): {}. Treating as move.'.format(
smove))
stack.append('usermove {}'.format(smove))
def main():
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = False
stack = []
while True:
if stack:
smove = stack.pop()
else: smove = input()
if smove == 'quit':
break
elif smove == 'protover 2':
print('feature done=0')
print('feature myname="Sunfish"')
print('feature usermove=1')
print('feature setboard=1')
print('feature ping=1')
print('feature sigint=0')
print('feature variants="normal"')
print('feature done=1')
elif smove == 'new':
stack.append('setboard ' + tools.FEN_INITIAL)
elif smove.startswith('setboard'):
_, fen = smove.split(' ', 1)
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
elif smove == 'force':
forced = True
elif smove == 'go':
forced = False
moves_remain = 40
use = our_time/moves_remain
# Let's follow the clock of our opponent
if our_time >= 100 and opp_time >= 100:
use *= our_time/opp_time
start = time.time()
for _ in searcher._search(pos):
if show_thinking:
ply = searcher.depth
entry = searcher.tp_score.get((pos, ply, True))
score = int(round((entry.lower + entry.upper)/2))
dual_score = '{}:{}'.format(entry.lower, entry.upper)
used = int((time.time() - start)*100 + .5)
moves = tools.pv(searcher, pos, include_scores=False)
print('{:>3} {:>8} {:>8} {:>13} \t{}'.format(
ply, score, used, searcher.nodes, moves))
if time.time() - start > use/100:
break
entry = searcher.tp_score.get((pos, searcher.depth, True))
m, s = searcher.tp_move.get(pos), entry.lower
# We only resign once we are mated.. That's never?
if s == -sunfish.MATE_UPPER:
print('resign')
else:
print('move', tools.mrender(pos, m))
pos = pos.move(m)
color = 1-color
elif smove.startswith('ping'):
_, N = smove.split()
print('pong', N)
elif smove.startswith('usermove'):
_, smove = smove.split()
m = tools.mparse(color, smove)
pos = pos.move(m)
color = 1-color
if not forced:
stack.append('go')
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
elif smove.startswith('perft'):
start = time.time()
for d in range(1,10):
res = sum(1 for _ in tools.collect_tree_depth(tools.expand_position(pos), d))
print('{:>8} {:>8}'.format(res, time.time()-start))
elif smove.startswith('post'):
show_thinking = True
elif smove.startswith('nopost'):
show_thinking = False
elif any(smove.startswith(x) for x in ('xboard','random','hard','accepted','level')):
pass
else:
print("Error (unkown command):", smove)
def main():
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = True
# print name of chess engine
print('Sunfish')
while True:
smove = input()
if smove == 'quit' or smove == 'stop':
break
elif smove == 'uci':
print('id name Sunfish')
print('uciok')
elif smove == 'isready':
print('readyok')
elif smove == 'ucinewgame':
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = True
elif smove.startswith('position'):
params = smove.split(' ', 2)
if params[1] == 'fen':
fen = params[2]
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
else:
params = smove.split(' ')
if len(params) == 1: continue
i = 1
while i < len(params):
param = params[i]
if param == 'startpos':
pos = tools.parseFEN(tools.FEN_INITIAL)
color = WHITE
elif param == 'moves':
i += 1
# rest are moves
while i < len(params):
m0 = params[i]
m = tools.mparse(color, m0)
pos = pos.move(m)
color = 1 - color
i += 1
i += 1
elif smove.startswith('go'):
# default options
depth = 1000
movetime = -1
moves_remain = 40
tc = 0
# parse parameters
params = smove.split(' ')
if len(params) == 1: continue
i = 0
while i < len(params):
param = params[i]
if param == 'depth':
i += 1
depth = int(params[i])
elif param == 'movetime':
i += 1
movetime = int(params[i])
elif param == 'wtime':
i += 1
if color == WHITE:
movetime = int(params[i])
tc = 1
elif param == 'btime':
i += 1
if color == BLACK:
movetime = int(params[i])
tc = 1
elif param == 'movestogo':
i += 1
moves_remain = int(params[i])
i += 1
if tc == 1 and moves_remain > 0:
movetime = movetime / moves_remain
forced = False
start = time.time()
ponder = None
for _ in searcher._search(pos):
moves = tools.pv(searcher, pos, include_scores=False)
if show_thinking:
entry = searcher.tp_score.get((pos, searcher.depth, True))
score = int(round((entry.lower + entry.upper) / 2))
usedtime = int((time.time() - start) * 1000)
moves_str = moves if len(moves) < 15 else ''
print('info depth {} score {} time {} nodes {} {}'.format(
searcher.depth, score, usedtime, searcher.nodes,
moves_str))
if len(moves) > 5:
ponder = moves[1]
if movetime > 0 and (time.time() - start) * 1000 > movetime:
break
if searcher.depth >= depth:
break
entry = searcher.tp_score.get((pos, searcher.depth, True))
m, s = searcher.tp_move.get(pos), entry.lower
moves = moves.split(' ')
if len(moves) > 1:
print('bestmove ' + moves[0] + ' ponder ' + moves[1])
else:
print('bestmove ' + moves[0])
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
else:
pass
def main():
pos = tools.parseFEN(tools.FEN_INITIAL)
searcher = sunfish.Searcher()
forced = False
color = WHITE
our_time, opp_time = 1000, 1000 # time in centi-seconds
show_thinking = False
stack = []
while True:
if stack:
smove = stack.pop()
else:
smove = input()
if smove == 'quit':
break
elif smove == 'protover 2':
print('feature done=0')
print('feature myname="Sunfish"')
print('feature usermove=1')
print('feature setboard=1')
print('feature ping=1')
print('feature sigint=0')
print('feature variants="normal"')
print('feature done=1')
elif smove == 'new':
stack.append('setboard ' + tools.FEN_INITIAL)
elif smove.startswith('setboard'):
_, fen = smove.split(' ', 1)
pos = tools.parseFEN(fen)
color = WHITE if fen.split()[1] == 'w' else BLACK
elif smove == 'force':
forced = True
elif smove == 'go':
forced = False
moves_remain = 40
use = our_time / moves_remain
# Let's follow the clock of our opponent
if our_time >= 100 and opp_time >= 100:
use *= our_time / opp_time
start = time.time()
for _ in searcher._search(pos):
if show_thinking:
ply = searcher.depth
entry = searcher.tp_score.get((pos, ply, True))
score = int(round((entry.lower + entry.upper) / 2))
dual_score = '{}:{}'.format(entry.lower, entry.upper)
used = int((time.time() - start) * 100 + .5)
moves = tools.pv(searcher, pos, include_scores=False)
print('{:>3} {:>8} {:>8} {:>13} \t{}'.format(
ply, score, used, searcher.nodes, moves))
if time.time() - start > use / 100:
break
entry = searcher.tp_score.get((pos, searcher.depth, True))
m, s = searcher.tp_move.get(pos), entry.lower
# We only resign once we are mated.. That's never?
if s == -sunfish.MATE_UPPER:
print('resign')
else:
print('move', tools.mrender(pos, m))
pos = pos.move(m)
color = 1 - color
elif smove.startswith('ping'):
_, N = smove.split()
print('pong', N)
elif smove.startswith('usermove'):
_, smove = smove.split()
m = tools.mparse(color, smove)
pos = pos.move(m)
color = 1 - color
if not forced:
stack.append('go')
elif smove.startswith('time'):
our_time = int(smove.split()[1])
elif smove.startswith('otim'):
opp_time = int(smove.split()[1])
elif smove.startswith('perft'):
start = time.time()
for d in range(1, 10):
res = sum(1 for _ in tools.collect_tree_depth(
tools.expand_position(pos), d))
print('{:>8} {:>8}'.format(res, time.time() - start))
elif smove.startswith('post'):
show_thinking = True
elif smove.startswith('nopost'):
show_thinking = False
elif any(
smove.startswith(x)
for x in ('xboard', 'random', 'hard', 'accepted', 'level')):
pass
else:
print("Error (unkown command):", smove)