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test.py
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# -*- coding: utf-8 -*-
import faulthandler
import unittest
import pyffish as sf
faulthandler.enable()
CHESS = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
CHESS960 = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w HAha - 0 1"
CAPA = "rnabqkbcnr/pppppppppp/10/10/10/10/PPPPPPPPPP/RNABQKBCNR w KQkq - 0 1"
CAPAHOUSE = "rnabqkbcnr/pppppppppp/10/10/10/10/PPPPPPPPPP/RNABQKBCNR[] w KQkq - 0 1"
SITTUYIN = "8/8/4pppp/pppp4/4PPPP/PPPP4/8/8[KFRRSSNNkfrrssnn] w - - 0 1"
MAKRUK = "rnsmksnr/8/pppppppp/8/8/PPPPPPPP/8/RNSKMSNR w - - 0 1"
CAMBODIAN = "rnsmksnr/8/pppppppp/8/8/PPPPPPPP/8/RNSKMSNR w DEde - 0 1"
SHOGI = "lnsgkgsnl/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL[-] w - - 0 1"
SHOGI_SFEN = "lnsgkgsnl/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL b - 1"
SEIRAWAN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[EHeh] w KQBCDFGkqbcdfg - 0 1"
GRAND = "r8r/1nbqkcabn1/pppppppppp/10/10/10/10/PPPPPPPPPP/1NBQKCABN1/R8R w - - 0 1"
GRANDHOUSE = "r8r/1nbqkcabn1/pppppppppp/10/10/10/10/PPPPPPPPPP/1NBQKCABN1/R8R[] w - - 0 1"
XIANGQI = "rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR w - - 0 1"
SHOGUN = "rnb+fkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNB+FKBNR[] w KQkq - 0 1"
JANGGI = "rnba1abnr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/RNBA1ABNR w - - 0 1"
ini_text = """
# Hybrid variant of Grand-chess and crazyhouse, using Grand-chess as a template
[grandhouse:grand]
startFen = r8r/1nbqkcabn1/pppppppppp/10/10/10/10/PPPPPPPPPP/1NBQKCABN1/R8R[] w - - 0 1
pieceDrops = true
capturesToHand = true
# Shogun chess
[shogun:crazyhouse]
startFen = rnb+fkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNB+FKBNR[] w KQkq - 0 1
commoner = c
centaur = g
archbishop = a
chancellor = m
fers = f
promotionRegionWhite = *6 *7 *8
promotionRegionBlack = *3 *2 *1
promotionLimit = g:1 a:1 m:1 q:1
promotionPieceTypes = -
promotedPieceType = p:c n:g b:a r:m f:q
mandatoryPawnPromotion = false
firstRankPawnDrops = true
promotionZonePawnDrops = true
whiteDropRegion = *1 *2 *3 *4 *5
blackDropRegion = *4 *5 *6 *7 *8
immobilityIllegal = true
# Asymmetric variant with one army using pieces that move like knights but attack like other pieces (kniroo and knibis)
[orda:chess]
startFen = lhaykahl/8/pppppppp/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1
centaur = h
knibis = a
kniroo = l
silver = y
promotionPieceTypes = qh
flagPiece = k
flagRegionWhite = *8
flagRegionBlack = *1
[diana:losalamos]
pieceToCharTable = PNBRQ................Kpnbrq................k
bishop = b
promotionPieceTypes = rbn
castling = true
castlingKingsideFile = e
castlingQueensideFile = b
startFen = rbnkbr/pppppp/6/6/PPPPPP/RBNKBR w KQkq - 0 1
[passchess:chess]
pass = true
[royalduck:duck]
extinctionPseudoRoyal = true
[makhouse:makruk]
startFen = rnsmksnr/8/pppppppp/8/8/PPPPPPPP/8/RNSKMSNR[] w - - 0 1
pieceDrops = true
capturesToHand = true
firstRankPawnDrops = true
promotionZonePawnDrops = true
immobilityIllegal = true
[wazirking:chess]
fers = q
king = k:W
startFen = 7k/5Kq1/8/8/8/8/8/8 w - - 0 1
stalemateValue = loss
nFoldValue = loss
[betzatest]
maxRank = 7
maxFile = 7
customPiece1 = a:lhN
customPiece2 = b:rhN
customPiece3 = c:hlN
customPiece4 = d:hrN
startFen = 7/7/7/3A3/7/7/7 w - - 0 1
[cannonshogi:shogi]
dropNoDoubled = -
shogiPawnDropMateIllegal = false
soldier = p
cannon = u
customPiece1 = a:pR
customPiece2 = c:mBcpB
customPiece3 = i:pB
customPiece4 = w:mRpRmFpB2
customPiece5 = f:mBpBmWpR2
promotedPieceType = u:w a:w c:f i:f
startFen = lnsgkgsnl/1rci1uab1/p1p1p1p1p/9/9/9/P1P1P1P1P/1BAU1ICR1/LNSGKGSNL[-] w 0 1
[fogofwar:chess]
king = -
commoner = k
castlingKingPiece = k
extinctionValue = loss
extinctionPieceTypes = k
"""
sf.load_variant_config(ini_text)
variant_positions = {
"chess": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1": (False, False), # startpos
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -": (False, False), # startpos
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR": (False, False), # startpos
"rnbqkbnr/ppp2ppp/4p3/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq d6 0 3": (False, False),
"k7/8/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs K
"k7/b7/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs KB
"k7/n7/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs KN
"k7/p7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KP
"k7/r7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KR
"k7/q7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KQ
"k7/nn6/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vsNN K
"k7/bb6/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KBB opp color
"k7/b1b5/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs KBB same color
"kb6/8/8/8/8/8/8/K1B6 w - - 0 1": (True, True), # KB vs KB same color
"kb6/8/8/8/8/8/8/KB7 w - - 0 1": (False, False), # KB vs KB opp color
"8/8/8/8/8/6KN/8/6nk w - - 0 1": (False, False), # KN vs KN
},
"atomic": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1": (False, False), # startpos
"8/8/8/8/3K4/3k4/8/8 b - - 0 1": (True, True), # K vs K
"k7/p7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KP
"k7/q7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KQ
},
"crazyhouse": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR/ w KQkq - 0 1": (False, False), # lichess style startpos
},
"3check": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 3+3 0 1": (False, False), # startpos
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +0+2": (False, False), # lichess style check count
"k7/n7/8/8/8/8/8/K7 w - - 1+2 0 1": (True, False), # K vs KN
"k7/b7/8/8/8/8/8/K7 w - - 3+1 0 1": (True, False), # K vs KB
},
"horde": {
"rnbqkbnr/pppppppp/8/1PP2PP1/PPPPPPPP/PPPPPPPP/PPPPPPPP/PPPPPPPP w kq - 0 1": (False, False), # startpos
},
"racingkings": {
"8/8/8/8/8/8/krbnNBRK/qrbnNBRQ w - - 0 1": (False, False), # startpos
"8/8/8/8/8/8/K6k/8 w - - 0 1": (False, False), # KvK
},
"placement": {
"8/pppppppp/8/8/8/8/PPPPPPPP/8[KQRRBBNNkqrrbbnn] w - - 0 1": (False, False), # startpos
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[] w KQkq - 0 1": (False, False), # chess startpos
"k7/8/8/8/8/8/8/K7[] w - - 0 1": (True, True), # K vs K
},
"newzealand": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1": (False, False), # startpos
},
"seirawan": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[HEhe] w KQBCDFGkqbcdfg - 0 1": (False, False), # startpos
"k7/8/8/8/8/8/8/K7[] w - - 0 1": (True, True), # K vs K
"k7/8/8/8/8/8/8/KH6[] w - - 0 1": (False, True), # KH vs K
"k7/8/8/8/8/8/8/4K3[E] w E - 0 1": (False, True), # KE vs K
},
"cambodian": {
"rnsmksnr/8/pppppppp/8/8/PPPPPPPP/8/RNSKMSNR w DEde 0 0 1": (False, False), # startpos
"1ns1ksn1/r6r/pppmpppp/3p4/8/PPPPPPPP/RK2N2R/1NS1MS2 w Ee - 6 5": (False, False),
},
"sittuyin": {
"8/8/4pppp/pppp4/4PPPP/PPPP4/8/8[KFRRSSNNkfrrssnn] w - - 0 1": (False, False), # startpos
"k7/8/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs K, skip pocket
"k6P/8/8/8/8/8/8/K7[] w - - 0 1": (True, True), # KP vs K
"k6P/8/8/8/8/8/8/K6p[] w - - 0 1": (False, False), # KP vs KP
"k7/8/8/8/8/8/8/KFF5[] w - - 0 1": (False, True), # KFF vs K
"k7/8/8/8/8/8/8/KS6[] w - - 0 1": (False, True), # KS vs K
},
"makpong": {
"8/8/8/4k2K/5m~2/4m~3/8/8 w - 128 8 58": (True, False), # KFF vs K
"k7/n7/8/8/8/8/8/K7 w - - 0 1": (True, False), # K vs KN
"k7/8/8/8/8/8/8/K7 w - - 0 1": (True, True), # K vs K
},
"xiangqi": {
"rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR w - - 0 1": (False, False), # startpos
"5k3/4a4/3CN4/9/1PP5p/9/8P/4C4/4A4/2B1K4 w - - 0 46": (False, False), # issue #53
"4k4/9/9/9/9/9/9/9/9/4K4 w - - 0 1": (True, True), # K vs K
"4k4/9/9/4p4/9/9/9/9/9/4KR3 w - - 0 1": (False, False), # KR vs KP
"4k4/9/9/9/9/9/9/9/9/3KN4 w - - 0 1": (False, True), # KN vs K
"4k4/9/4b4/9/9/9/9/4B4/9/4K4 w - - 0 1": (True, True), # KB vs KB
"4k4/9/9/9/9/9/9/9/4A4/4KC3 w - - 0 1": (False, True), # KCA vs K
},
"janggi": {
JANGGI: (False, False), # startpos
"rhea1aehr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/RHEA1AEHR w - - 0 1": (False, False), # startpos
"5k3/4a4/3CN4/9/1PP5p/9/8P/4C4/4A4/2B1K4 w - - 0 46": (False, False), # issue #53
"4k4/9/9/9/9/4B4/4B4/9/9/4K4 w - - 0 1": (False, True), # KEE vs K
"4k4/9/9/9/9/9/9/9/4A4/4KC3 w - - 0 1": (False, True), # KCA vs K
},
"shako": {
"k9/10/10/10/10/10/10/10/10/KC8 w - - 0 1": (True, True), # KC vs K
"k9/10/10/10/10/10/10/10/10/KCC7 w - - 0 1": (False, True), # KCC vs K
"k9/10/10/10/10/10/10/10/10/KEC7 w - - 0 1": (False, True), # KEC vs K
"k9/10/10/10/10/10/10/10/10/KNE7 w - - 0 1": (False, True), # KNE vs K
"kb8/10/10/10/10/10/10/10/10/KE8 w - - 0 1": (False, False), # KE vs KB opp color
"kb8/10/10/10/10/10/10/10/10/K1E7 w - - 0 1": (True, True), # KE vs KB same color
},
"orda": {
"k7/8/8/8/8/8/8/K7 w - - 0 1": (False, False), # K vs K
},
"tencubed": {
"2cwamwc2/1rnbqkbnr1/pppppppppp/10/10/10/10/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2 w - - 0 1": (False, False), # startpos
"10/5k4/10/10/10/10/10/10/5KC3/10 w - - 0 1": (False, True), # KC vs K
"10/5k4/10/10/10/10/10/10/5K4/10 w - - 0 1": (True, True), # K vs K
},
"wazirking": {
"7k/6K1/8/8/8/8/8/8 b - - 0 1": (False, False), # K vs K
},
}
invalid_variant_positions = {
"chess": (
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 a", # invalid full move
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - b 1", # invalid half move
"rnbqkbnr/ppp2ppp/4p3/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq -6 0 3", # invalid en passant
"rnbqkbnr/ppp2ppp/4p3/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq .6 0 3", # invalid en passant
"rnbqkbnr/ppp2ppp/4p3/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq d- 0 3", # invalid en passant
"rnbqkbnr/ppp2ppp/4p3/3pP3/8/8/PPPP1PPP/RNBQKBNR w KQkq 0 3", # invalid/missing en passant
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w 123 - 0 1", # invalid castling
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR g KQkq - 0 1", # invalid side to move
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNH w KQkq - 0 1", # invalid piece type
"rnbqkbnr/pppppppp/7/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # invalid file count
"rnbqkbnr/pppppppp/9/7/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # invalid file count
"rnbqkbnr/pppppppp/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # invalid rank count
"rnbqkbn1/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # missing castling rook
"1nbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # missing castling rook
"rnbqkbnr/pppppppp/8/8/8/4K3/PPPPPPPP/RNBQ1BNR w KQkq - 0 1", # king not on castling rank
"rnbqkbnr/pppppppp/8/8/8/RNBQKBNR/PPPPPPPP/8 w KQkq - 0 1", # not on castling rank
"8/pppppppp/rnbqkbnr/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", # not on castling rank
),
"atomic": (
"rnbqkbnr/pppppppp/8/8/8/RNBQKBNR/PPPPPPPP/8 w KQkq - 0 1", # wrong castling rank
),
"3check": (
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 3+a 0 1", # invalid check count
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +a+2", # invalid lichess check count
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1 +1+4", # invalid lichess check count
),
"horde": (
"rnbqkbnr/pppppppp/8/1PP2PP1/PPPPPPPP/PPPPPPPP/PPPPPPPP/PPPPPPPK w kq - 0 1", # wrong king count
"rnbq1bnr/pppppppp/8/1PP2PP1/PPPPPPPP/PPPPPPPP/PPPPPPPP/PPPPPPPP w kq - 0 1", # wrong king count
),
"sittuyin": (
"8/8/4pppp/pppp4/4PPPP/PPPP4/8/8[FRRSSNNkfrrssnn] w - - 0 1", # wrong king count
),
"shako": {
"c8c/ernbqkbnre/pppppppppp/10/10/10/10/PPPPPPPPPP/C8C/ERNBQKBNRE w KQkq - 0 1", # not on castling rank
},
"seirawan": {
"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQK1NR[HEhe] w KQBCDFGkqbcdfg - 0 1", # white gating flag
"rnbqkb1r/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[HEhe] w KQBCDFGkqbcdfg - 0 1", # black gating flag
}
}
class TestPyffish(unittest.TestCase):
def test_version(self):
result = sf.version()
self.assertEqual(len(result), 3)
def test_info(self):
result = sf.info()
self.assertTrue(result.startswith("Fairy-Stockfish"))
def test_variants_loaded(self):
variants = sf.variants()
self.assertTrue("shogun" in variants)
def test_set_option(self):
result = sf.set_option("UCI_Variant", "capablanca")
self.assertIsNone(result)
def test_two_boards(self):
self.assertFalse(sf.two_boards("chess"))
self.assertTrue(sf.two_boards("bughouse"))
def test_captures_to_hand(self):
self.assertFalse(sf.captures_to_hand("seirawan"))
self.assertTrue(sf.captures_to_hand("shouse"))
def test_start_fen(self):
result = sf.start_fen("capablanca")
self.assertEqual(result, CAPA)
result = sf.start_fen("capahouse")
self.assertEqual(result, CAPAHOUSE)
result = sf.start_fen("xiangqi")
self.assertEqual(result, XIANGQI)
result = sf.start_fen("grandhouse")
self.assertEqual(result, GRANDHOUSE)
result = sf.start_fen("shogun")
self.assertEqual(result, SHOGUN)
def test_legal_moves(self):
fen = "10/10/10/10/10/k9/10/K9 w - - 0 1"
result = sf.legal_moves("capablanca", fen, [])
self.assertEqual(result, ["a1b1"])
result = sf.legal_moves("grand", GRAND, ["a3a5"])
self.assertIn("a10b10", result)
result = sf.legal_moves("xiangqi", XIANGQI, ["h3h10"])
self.assertIn("i10h10", result)
result = sf.legal_moves("xiangqi", XIANGQI, ["h3h10"])
self.assertIn("i10h10", result)
result = sf.legal_moves("shogun", SHOGUN, ["c2c4", "b8c6", "b2b4", "b7b5", "c4b5", "c6b8"])
self.assertIn("b5b6+", result)
# Seirawan gating but no castling
fen = "rnbq3r/pp2bkpp/8/2p1p2K/2p1P3/8/PPPP1PPP/RNB4R[EHeh] b ABCHabcdh - 0 10"
result = sf.legal_moves("seirawan", fen, [])
self.assertIn("c8g4h", result)
# In Cannon Shogi the FGC and FSC can also move one square diagonally and, besides,
# move or capture two squares diagonally, by leaping an adjacent piece.
fen = "lnsg1gsnl/1rc1kuab1/p1+A1p1p1p/3P5/6i2/6P2/P1P1P3P/1B1U1ICR1/LNSGKGSNL[] w - - 1 3"
result = sf.legal_moves("cannonshogi", fen, [])
# mF
self.assertIn("c7b6", result)
self.assertIn("c7d8", result)
self.assertNotIn("c7d6", result)
self.assertNotIn("c7b8", result)
# pB2
self.assertIn("c7a9", result)
self.assertIn("c7e5", result)
self.assertNotIn("c7a5", result)
self.assertNotIn("c7e9", result)
# verify distance limited to 2
self.assertNotIn("c7f4", result)
self.assertNotIn("c7g3", result)
# Cambodian queen cannot capture with its leap
# Cambodian king cannot leap to escape check
result = sf.legal_moves("cambodian", CAMBODIAN, ["b1d2", "g8e7", "d2e4", "d6d5", "e4d6"])
self.assertNotIn("d8d6", result)
self.assertNotIn("e8g7", result)
self.assertNotIn("e8c7", result)
# In Janggi stalemate position pass move (in place king move) is possible
fen = "4k4/c7R/9/3R1R3/9/9/9/9/9/3K5 b - - 0 1"
result = sf.legal_moves("janggi", fen, [])
self.assertEqual(result, ["e10e10"])
# pawn promotion of dropped pawns beyond promotion rank
result = sf.legal_moves("makhouse", "rnsmksnr/8/1ppP1ppp/p3p3/8/PPP1PPPP/8/RNSKMSNR[p] w - - 0 4", [])
self.assertIn("d6d7m", result)
self.assertNotIn("d6d7", result)
# Test configurable piece perft
legals = ['a3a4', 'b3b4', 'c3c4', 'd3d4', 'e3e4', 'f3f4', 'g3g4', 'e1e2', 'f1f2', 'b1a2', 'b1b2', 'b1c2', 'c1b2', 'c1c2', 'c1d2', 'a1a2', 'g1g2', 'd1c2', 'd1d2', 'd1e2']
result = sf.legal_moves("yarishogi", sf.start_fen("yarishogi"), [])
self.assertCountEqual(legals, result)
# Test betza parsing
result = sf.legal_moves("betzatest", "7/7/7/3A3/7/7/7 w - - 0 1", [])
self.assertEqual(['d4c2', 'd4b3', 'd4b5', 'd4c6'], result)
result = sf.legal_moves("betzatest", "7/7/7/3B3/7/7/7 w - - 0 1", [])
self.assertEqual(['d4e2', 'd4f3', 'd4f5', 'd4e6'], result)
result = sf.legal_moves("betzatest", "7/7/7/3C3/7/7/7 w - - 0 1", [])
self.assertEqual(['d4e2', 'd4b3', 'd4f5', 'd4c6'], result)
result = sf.legal_moves("betzatest", "7/7/7/3D3/7/7/7 w - - 0 1", [])
self.assertEqual(['d4c2', 'd4f3', 'd4b5', 'd4e6'], result)
def test_short_castling(self):
legals = ['f5f4', 'a7a6', 'b7b6', 'c7c6', 'd7d6', 'e7e6', 'i7i6', 'j7j6', 'a7a5', 'b7b5', 'c7c5', 'e7e5', 'i7i5', 'j7j5', 'b8a6', 'b8c6', 'h6g4', 'h6i4', 'h6j5', 'h6f7', 'h6g8', 'h6i8', 'd5a2', 'd5b3', 'd5f3', 'd5c4', 'd5e4', 'd5c6', 'd5e6', 'd5f7', 'd5g8', 'j8g8', 'j8h8', 'j8i8', 'e8f7', 'c8b6', 'c8d6', 'g6g2', 'g6g3', 'g6f4', 'g6g4', 'g6h4', 'g6e5', 'g6g5', 'g6i5', 'g6a6', 'g6b6', 'g6c6', 'g6d6', 'g6e6', 'g6f6', 'g6h8', 'f8f7', 'f8g8', 'f8i8']
moves = ['b2b4', 'f7f5', 'c2c3', 'g8d5', 'a2a4', 'h8g6', 'f2f3', 'i8h6', 'h2h3']
result = sf.legal_moves("capablanca", CAPA, moves)
self.assertCountEqual(legals, result)
self.assertIn("f8i8", result)
moves = ['a2a4', 'f7f5', 'b2b3', 'g8d5', 'b1a3', 'i8h6', 'c1a2', 'h8g6', 'c2c4']
result = sf.legal_moves("capablanca", CAPA, moves)
self.assertIn("f8i8", result)
moves = ['f2f4', 'g7g6', 'g1d4', 'j7j6', 'h1g3', 'b8a6', 'i1h3', 'h7h6']
result = sf.legal_moves("capablanca", CAPA, moves)
self.assertIn("f1i1", result)
# Check that chess960 castling notation is used for otherwise ambiguous castling move
# d1e1 is a normal king move, so castling has to be d1f1
result = sf.legal_moves("diana", "rbnk1r/pppbpp/3p2/5P/PPPPPB/RBNK1R w KQkq - 2 3", [])
self.assertIn("d1f1", result)
# Check that in variants where castling rooks are not in the corner
# the castling rook is nevertheless assigned correctly
result = sf.legal_moves("shako", "c8c/ernbqkbnre/pppppppppp/10/10/10/10/PPPPPPPPPP/5K2RR/10 w Kkq - 0 1", [])
self.assertIn("f2h2", result)
result = sf.legal_moves("shako", "c8c/ernbqkbnre/pppppppppp/10/10/10/10/PPPPPPPPPP/RR3K4/10 w Qkq - 0 1", [])
self.assertIn("f2d2", result)
def test_get_fen(self):
result = sf.get_fen("chess", CHESS, [])
self.assertEqual(result, CHESS)
# incomplete FENs
result = sf.get_fen("chess", "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR", [])
self.assertEqual(result, "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w - - 0 1")
result = sf.get_fen("chess", "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -", [])
self.assertEqual(result, "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1")
result = sf.get_fen("chess", "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w 1 2", [])
self.assertEqual(result, "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w - - 1 2")
# invalid castling rights
result = sf.get_fen("chess", "8/rnbqkbnr/pppppppp/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", [])
self.assertEqual(result, "8/rnbqkbnr/pppppppp/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1")
result = sf.get_fen("chess", "r7/1nbqkbnr/pppppppp/8/8/P6P/RPPPPPPR/1NBQKBN1 w KQkq - 0 1", [])
self.assertEqual(result, "r7/1nbqkbnr/pppppppp/8/8/P6P/RPPPPPPR/1NBQKBN1 w - - 0 1")
# alternative piece symbols
result = sf.get_fen("janggi", "rhea1aehr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/RHEA1AEHR w - - 0 1", [])
self.assertEqual(result, JANGGI)
result = sf.get_fen("capablanca", CAPA, [])
self.assertEqual(result, CAPA)
result = sf.get_fen("xiangqi", XIANGQI, [])
self.assertEqual(result, XIANGQI)
result = sf.get_fen("seirawan", SEIRAWAN, [])
self.assertEqual(result, SEIRAWAN)
# test idempotence for S-Chess960 gating flags
fen1 = sf.get_fen("seirawan", SEIRAWAN, [], True)
fen2 = sf.get_fen("seirawan", fen1, [], True)
self.assertEqual(fen1, fen2)
fen = "rnab1kbcnr/ppppPppppp/10/4q5/10/10/PPPPP1PPPP/RNABQKBCNR[p] b KQkq - 0 3"
result = sf.get_fen("capahouse", CAPA, ["f2f4", "e7e5", "f4e5", "e8e5", "P@e7"])
self.assertEqual(result, fen)
fen0 = "reb1k2r/ppppqppp/2nb1n2/4p3/4P3/N1P2N2/PB1PQPPP/RE2KBHR[h] b KQkqac - 2 6"
fen1 = "reb2rk1/ppppqppp/2nb1n2/4p3/4P3/N1P2N2/PB1PQPPP/RE2KBHR[h] w KQac - 3 7"
result = sf.get_fen("seirawan", fen0, ["e8g8"])
self.assertEqual(result, fen1)
# handle invalid castling/gating flags
fen0 = "rnbq3r/pp2bkpp/8/2p1p2K/2p1P3/8/PPPP1PPP/RNB4R[EHeh] b QBCEHabcdk - 0 10"
fen1 = "rnbq3r/pp2bkpp/8/2p1p2K/2p1P3/8/PPPP1PPP/RNB4R[EHeh] b ABCHabcdh - 0 10"
result = sf.get_fen("seirawan", fen0, [])
self.assertEqual(result, fen1)
result = sf.get_fen("chess", CHESS, [], True, False, False)
self.assertEqual(result, CHESS960)
# test O-O-O
fen = "rbkqnrbn/pppppppp/8/8/8/8/PPPPPPPP/RBKQNRBN w AFaf - 0 1"
moves = ["d2d4", "f7f5", "e1f3", "h8g6", "h1g3", "c7c6", "c2c3", "e7e6", "b1d3", "d7d5", "d1c2", "b8d6", "e2e3", "d8d7", "c1a1"]
result = sf.get_fen("chess", fen, moves, True, False, False)
self.assertEqual(result, "r1k1nrb1/pp1q2pp/2pbp1n1/3p1p2/3P4/2PBPNN1/PPQ2PPP/2KR1RB1 b fa - 2 8")
# passing should not affect castling rights
fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
result = sf.get_fen("passchess", fen, ["e1e1", "e8e8"])
self.assertEqual(result, "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 2 2")
# only irreversible moves should reset 50 move rule counter
fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
result = sf.get_fen("pawnsideways", fen, ["e2e4", "g8f6", "e4d4"])
self.assertEqual(result, "rnbqkb1r/pppppppp/5n2/8/3P4/8/PPPP1PPP/RNBQKBNR b KQkq - 2 2")
result = sf.get_fen("pawnback", fen, ["e2e4", "e7e6"])
self.assertEqual(result, "rnbqkbnr/pppp1ppp/4p3/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 2 2")
result = sf.get_fen("pocketknight", "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR[Nn] w KQkq - 0 1", ["N@e4"])
self.assertEqual(result, "rnbqkbnr/pppppppp/8/8/4N3/8/PPPPPPPP/RNBQKBNR[n] b KQkq - 0 1")
# duck chess en passant
fen = "r1b1k3/pp3pb1/4p3/2p2p2/2PpP2q/1P1P1P2/P1K1*3/RN1Q2N1 b q e3 0 17"
result = sf.get_fen("duck", fen, [])
self.assertEqual(result, fen)
# SFEN
result = sf.get_fen("shogi", SHOGI, [], False, True)
self.assertEqual(result, SHOGI_SFEN)
# makruk FEN
fen = "rnsmksnr/8/1pM~1pppp/p7/8/PPPP1PPP/8/RNSKMSNR b - - 0 3"
result = sf.get_fen("makruk", MAKRUK, ["e3e4", "d6d5", "e4d5", "a6a5", "d5c6m"], False, False, True)
self.assertEqual(result, fen)
result = sf.get_fen("makruk", fen, [], False, False, True)
self.assertEqual(result, fen)
# makruk piece honor counting
fen = "8/3k4/8/2K1S1P1/8/8/8/8 w - - 0 1"
moves = ["g5g6m"]
result = sf.get_fen("makruk", fen, moves, False, False, True)
self.assertEqual(result, "8/3k4/6M~1/2K1S3/8/8/8/8 b - 88 8 1")
fen = "8/2K3k1/5m2/4S1S1/8/8/8/8 w - 128 97 1"
moves = ["e5f6"]
result = sf.get_fen("makruk", fen, moves, False, False, True)
self.assertEqual(result, "8/2K3k1/5S2/6S1/8/8/8/8 b - 44 8 1")
# ignore count_started for piece honor counting
fen = "8/3k4/8/2K1S1P1/8/8/8/8 w - - 0 1"
moves = ["g5g6m"]
result = sf.get_fen("makruk", fen, moves, False, False, True, -1)
self.assertEqual(result, "8/3k4/6M~1/2K1S3/8/8/8/8 b - 88 8 1")
fen = "8/2K3k1/5m2/4S1S1/8/8/8/8 w - 128 1 30"
moves = ["e5f6"]
result = sf.get_fen("makruk", fen, moves, False, False, True, 58)
self.assertEqual(result, "8/2K3k1/5S2/6S1/8/8/8/8 b - 44 8 30")
# makruk board honor counting
fen = "3k4/2m5/8/4MP2/3KS3/8/8/8 w - - 0 1"
moves = ["f5f6m"]
result = sf.get_fen("makruk", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/4M3/3KS3/8/8/8 b - 128 0 1")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 128 0 33"
moves = ["d4d5"]
result = sf.get_fen("makruk", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 128 1 33")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 128 36 1"
moves = ["d4d5"]
result = sf.get_fen("makruk", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 128 37 1")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 128 0 33"
moves = ["d4d5"]
result = sf.get_fen("makruk", fen, moves, False, False, True, -1)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 128 0 33")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 128 7 33"
moves = ["d4d5"]
result = sf.get_fen("makruk", fen, moves, False, False, True, 58)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 128 8 33")
# ouk piece honor counting
fen = "8/3k4/8/2K1S1P1/8/8/8/8 w - - 0 1"
moves = ["g5g6m"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "8/3k4/6M~1/2K1S3/8/8/8/8 b - 86 8 1")
fen = "8/2K3k1/5m2/4S1S1/8/8/8/8 w - 128 97 1"
moves = ["e5f6"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "8/2K3k1/5S2/6S1/8/8/8/8 b - 42 8 1")
# adjust to board honor counting if it's faster
fen = "8/3k4/8/2K1S1P1/8/8/8/8 w - - 0 1"
moves = ["g5g6m"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, -1)
self.assertEqual(result, "8/3k4/6M~1/2K1S3/8/8/8/8 b - 86 8 1")
fen = "8/2K3k1/5m2/4S1S1/8/8/8/8 w - 126 101 80"
moves = ["e5f6"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, 58)
self.assertEqual(result, "8/2K3k1/5S2/6S1/8/8/8/8 b - 126 102 80")
# pawn promotion triggers piece honor counting
fen = "8/8/4k3/5P2/8/2RMK3/8/8 w - 126 41 50"
moves = ["f5f6m"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, 58)
self.assertEqual(result, "8/8/4kM~2/8/8/2RMK3/8/8 b - 30 10 50")
# king capturing the last unpromoted pawn triggers piece honor counting
fen = "8/8/4k3/5P2/8/2RMK3/8/8 b - 126 42 50"
moves = ["e6f5"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, 58)
self.assertEqual(result, "8/8/8/5k2/8/2RMK3/8/8 w - 30 7 51")
# ouk board honor counting
fen = "3k4/2m5/8/4MP2/3KS3/8/8/8 w - - 0 1"
moves = ["f5f6m"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/4M3/3KS3/8/8/8 b - 126 0 1")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 126 0 33"
moves = ["d4d5"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 126 1 33")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 126 36 1"
moves = ["d4d5"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 126 37 1")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 126 0 33"
moves = ["d4d5"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, -1)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 126 0 33")
fen = "3k4/2m5/5M~2/4M3/3KS3/8/8/8 w - 126 7 33"
moves = ["d4d5"]
result = sf.get_fen("cambodian", fen, moves, False, False, True, 58)
self.assertEqual(result, "3k4/2m5/5M~2/3KM3/4S3/8/8/8 b - 126 8 33")
# asean counting
fen = "4k3/3r4/2K5/8/3R4/8/8/8 w - - 0 1"
moves = ["d4d7"]
result = sf.get_fen("asean", fen, moves, False, False, False)
self.assertEqual(result, "4k3/3R4/2K5/8/8/8/8/8 b - 32 0 1")
fen = "4k3/3r4/2K5/8/3R4/1P6/8/8 w - - 0 1"
moves = ["d4d7"]
result = sf.get_fen("asean", fen, moves, False, False, False)
self.assertEqual(result, "4k3/3R4/2K5/8/8/1P6/8/8 b - - 0 1")
fen = "8/2P1k3/2K5/8/8/8/8/8 w - - 0 1"
moves = ["c7c8b"]
result = sf.get_fen("asean", fen, moves, False, False, False)
self.assertEqual(result, "2B5/4k3/2K5/8/8/8/8/8 b - 88 0 1")
fen = "8/8/4K3/3Q4/1k1N4/5b2/8/8 w - - 0 1"
moves = ["d4f3"]
result = sf.get_fen("asean", fen, moves, False, False, False)
self.assertEqual(result, "8/8/4K3/3Q4/1k6/5N2/8/8 b - 128 0 1")
fen = "3Q4/4P3/4K3/3Q4/1k6/8/8/8 w - - 0 1"
moves = ["e7e8q"]
result = sf.get_fen("asean", fen, moves, False, False, False)
self.assertEqual(result, "3QQ3/8/4K3/3Q4/1k6/8/8/8 b - - 0 1")
# Cambodian king loses its leap ability when it is "aimed" by a rook
fen = "rnsmk1nr/4s3/pppppppp/8/8/PPPPPPPP/R7/1NSKMSNR w DEde - 2 2"
moves = ["a2e2"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "rnsmk1nr/4s3/pppppppp/8/8/PPPPPPPP/4R3/1NSKMSNR b DEd - 3 2")
fen = "1nsmksnr/r7/pppppppp/8/8/PPPPPPPP/2SN4/R2KMSNR b DEde - 3 2"
moves = ["a7d7"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "1nsmksnr/3r4/pppppppp/8/8/PPPPPPPP/2SN4/R2KMSNR w Ede - 4 3")
fen = "rnsmksnr/8/1ppppppp/8/8/1PPPPPPP/8/RNSKMSNR w DEde - 0 1"
moves = ["a1a8"]
result = sf.get_fen("cambodian", fen, moves, False, False, True)
self.assertEqual(result, "Rnsmksnr/8/1ppppppp/8/8/1PPPPPPP/8/1NSKMSNR b DEd - 0 1")
def test_get_san(self):
fen = "4k3/8/3R4/8/1R3R2/8/3R4/4K3 w - - 0 1"
result = sf.get_san("chess", fen, "b4d4")
self.assertEqual(result, "Rbd4")
result = sf.get_san("chess", fen, "f4d4")
self.assertEqual(result, "Rfd4")
result = sf.get_san("chess", fen, "d2d4")
self.assertEqual(result, "R2d4")
result = sf.get_san("chess", fen, "d6d4")
self.assertEqual(result, "R6d4")
fen = "4k3/8/3R4/3P4/1RP1PR2/8/3R4/4K3 w - - 0 1"
result = sf.get_san("chess", fen, "d2d4")
self.assertEqual(result, "Rd4")
fen = "1r2k3/P1P5/8/8/8/8/8/4K3 w - - 0 1"
result = sf.get_san("chess", fen, "c7b8q")
self.assertEqual(result, "cxb8=Q+")
fen = "1r2k3/P1P5/8/8/8/8/8/4K3 w - - 0 1"
result = sf.get_san("chess", fen, "c7b8q", False, sf.NOTATION_LAN)
self.assertEqual(result, "c7xb8=Q+")
result = sf.get_san("capablanca", CAPA, "e2e4")
self.assertEqual(result, "e4")
result = sf.get_san("capablanca", CAPA, "e2e4", False, sf.NOTATION_LAN)
self.assertEqual(result, "e2-e4")
result = sf.get_san("capablanca", CAPA, "h1i3")
self.assertEqual(result, "Ci3")
result = sf.get_san("sittuyin", SITTUYIN, "R@a1")
self.assertEqual(result, "R@a1")
fen = "3rr3/1kn3n1/1ss1p1pp/1pPpP3/6PP/p3KN2/2SSFN2/3R3R[] b - - 0 14"
result = sf.get_san("sittuyin", fen, "c6c5")
self.assertEqual(result, "Scxc5")
fen = "7R/1r6/3k1np1/3s2N1/3s3P/4n3/6p1/2R3K1[] w - - 2 55"
result = sf.get_san("sittuyin", fen, "h4h4f")
self.assertEqual(result, "h4=F")
fen = "k7/2K3P1/8/4P3/8/8/8/1R6[] w - - 0 1"
result = sf.get_san("sittuyin", fen, "e5f6f")
self.assertEqual(result, "e5f6=F")
result = sf.get_san("shogi", SHOGI, "i3i4")
self.assertEqual(result, "P-16")
result = sf.get_san("shogi", SHOGI, "i3i4", False, sf.NOTATION_SHOGI_HOSKING)
self.assertEqual(result, "P16")
result = sf.get_san("shogi", SHOGI, "f1e2", False, sf.NOTATION_SHOGI_HOSKING)
self.assertEqual(result, "G49-58")
result = sf.get_san("shogi", SHOGI, "f1e2", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "G4i-5h")
result = sf.get_san("shogi", SHOGI, "f1e2", False, sf.NOTATION_SHOGI_HODGES_NUMBER)
self.assertEqual(result, "G49-58")
# Disambiguation of promotion moves
fen = "p1ksS/n1n2/4P/5/+L1K1+L[] b - - 3 9"
result = sf.get_san("kyotoshogi", fen, "c4b2+", False, sf.NOTATION_SHOGI_HODGES_NUMBER)
self.assertEqual(result, "N32-44+")
result = sf.get_san("kyotoshogi", fen, "a4b2+", False, sf.NOTATION_SHOGI_HODGES_NUMBER)
self.assertEqual(result, "N52-44+")
# Demotion
fen = "p+nks+l/5/5/L4/1SK+NP[-] b 0 1"
result = sf.get_san("kyotoshogi", fen, "e5e4-", False, sf.NOTATION_SAN)
self.assertEqual(result, "Ge4=L")
fen = "lnsgkgsnl/1r5b1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/1B5R1/LNSGKGSNL w -"
result = sf.get_san("shogi", fen, "b2h8", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "Bx2b=")
result = sf.get_san("shogi", fen, "b2h8+", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "Bx2b+")
fen = "lnsgkg1nl/1r5s1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/7R1/LNSGKGSNL[Bb] w "
result = sf.get_san("shogi", fen, "B@g7", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "B*3c")
result = sf.get_san("shogi", fen, "B@g7", False, sf.NOTATION_SHOGI_HODGES_NUMBER)
self.assertEqual(result, "B*33")
fen = "lnsgkg1nl/1r4s+B1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/7R1/LNSGKGSNL[B] w "
result = sf.get_san("shogi", fen, "h8g7", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "+B-3c")
fen = "lnk2gsnl/7b1/p1p+SGp1pp/6p2/1pP6/4P4/PP3PPPP/1S2G2R1/L2GK1bNL[PRppns] w "
result = sf.get_san("shogi", fen, "d7d8", False, sf.NOTATION_SHOGI_HODGES)
self.assertEqual(result, "+S-6b")
result = sf.get_san("xiangqi", XIANGQI, "h1g3")
self.assertEqual(result, "Hg3")
result = sf.get_san("xiangqi", XIANGQI, "h1g3", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "H2+3")
result = sf.get_san("xiangqi", XIANGQI, "c1e3")
self.assertEqual(result, "Ece3")
result = sf.get_san("xiangqi", XIANGQI, "c1e3", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "E7+5")
result = sf.get_san("xiangqi", XIANGQI, "h3h10")
self.assertEqual(result, "Cxh10")
result = sf.get_san("xiangqi", XIANGQI, "h3h10", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "C2+7")
result = sf.get_san("xiangqi", XIANGQI, "h3h5")
self.assertEqual(result, "Ch5")
# WXF notation does not denote check or checkmate
fen = "4k4/4a3R/9/9/9/9/9/9/4K4/9 w - - 0 1"
result = sf.get_san("xiangqi", fen, "i9e9", False)
self.assertEqual(result, "Rxe9+")
result = sf.get_san("xiangqi", fen, "i9e9", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "R1=5")
result = sf.get_san("xiangqi", fen, "i9i10", False)
self.assertEqual(result, "Ri10#")
result = sf.get_san("xiangqi", fen, "i9i10", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "R1+1")
# skip disambiguation for elephants and advisors, but not for pieces that require it
fen = "rnbakabnr/9/1c5c1/p1p1p1p1p/4P4/1NB6/P1P1P3P/1C1A3C1/9/RNBAK4 w - - 0 1"
result = sf.get_san("xiangqi", fen, "c5e3", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "E7-5")
result = sf.get_san("xiangqi", fen, "d1e2", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "A6+5")
result = sf.get_san("xiangqi", fen, "b5c7", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "H++7")
result = sf.get_san("xiangqi", fen, "e6e7", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "P++1")
result = sf.get_san("xiangqi", fen, "e4e5", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "P-+1")
# Tandem pawns
fen = "rnbakabnr/9/1c5c1/p1p1P1p1p/4P4/9/P3P3P/1C5C1/9/RNBAKABNR w - - 0 1"
result = sf.get_san("xiangqi", fen, "e7d7", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "15=6")
result = sf.get_san("xiangqi", fen, "e6d6", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "25=6")
result = sf.get_san("xiangqi", fen, "e4e5", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "35+1")
# use tandem pawn notation for pair of tandem pawns
fen = "5k3/9/3P5/3P1P1P1/5P3/9/9/9/9/4K4 w - - 0 1"
result = sf.get_san("xiangqi", fen, "d7e7", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "26=5")
result = sf.get_san("xiangqi", fen, "f6e6", False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, "24=5")
fen = "1rb1ka2r/4a4/2ncb1nc1/p1p1p1p1p/9/2P6/P3PNP1P/2N1C2C1/9/R1BAKAB1R w - - 1 7"
result = sf.get_san("xiangqi", fen, "c3e2")
self.assertEqual(result, "Hce2")
result = sf.get_san("xiangqi", fen, "c3d5")
self.assertEqual(result, "Hd5")
result = sf.get_san("janggi", JANGGI, "b1c3", False, sf.NOTATION_JANGGI)
self.assertEqual(result, "H02-83")
fen = "1b1aa2b1/5k3/3ncn3/1pp1pp3/5r2p/9/P1PPB1PPB/2N1CCN1c/9/R2AKAR2 w - - 19 17"
result = sf.get_san("janggi", fen, "d1e2", False, sf.NOTATION_SAN)
self.assertEqual(result, "Ade2")
fen = "1Pbcka3/3nNn1c1/N2CaC3/1pB6/9/9/5P3/9/4K4/9 w - - 0 23"
result = sf.get_san("janggi", fen, "f8f10", False, sf.NOTATION_SAN)
self.assertEqual(result, "Cfxf10")
result = sf.get_san("makruk", MAKRUK, "e3e4")
self.assertEqual(result, "e4")
result = sf.get_san("makruk", MAKRUK, "e3e4", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "จ๔")
result = sf.get_san("makruk", MAKRUK, "e3e4", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "บ จ๓-จ๔")
fen = "r1smksnr/3n4/pppp1ppp/4p3/4PP2/PPPP2PP/8/RNSKMSNR w - - 0 1"
result = sf.get_san("makruk", fen, "f4e5")
self.assertEqual(result, "fxe5")
result = sf.get_san("makruk", fen, "f4e5", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "ฉxจ๕")
result = sf.get_san("makruk", fen, "f4e5", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "บ ฉ๔xจ๕")
fen = "rnsm1s1r/4n1k1/1ppppppp/p7/2PPP3/PP3PPP/4N2R/RNSKMS2 b - - 1 5"
result = sf.get_san("makruk", fen, "f8f7")
self.assertEqual(result, "Sf7")
result = sf.get_san("makruk", fen, "f8f7", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "ค-ฉ๗")
result = sf.get_san("makruk", fen, "f8f7", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "ค ฉ๘-ฉ๗")
fen = "4k3/8/8/4S3/8/2S5/8/4K3 w - - 0 1"
result = sf.get_san("makruk", fen, "e5d4")
self.assertEqual(result, "Sed4")
result = sf.get_san("makruk", fen, "c3d4")
self.assertEqual(result, "Scd4")
result = sf.get_san("makruk", fen, "e5d4", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "คจ-ง๔")
result = sf.get_san("makruk", fen, "c3d4", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "คค-ง๔")
result = sf.get_san("makruk", fen, "e5d4", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "ค จ๕-ง๔")
result = sf.get_san("makruk", fen, "c3d4", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "ค ค๓-ง๔")
# Distinction between the regular met and the promoted pawn
fen = "4k3/8/4M3/4S3/8/2S5/8/4K3 w - - 0 1"
result = sf.get_san("makruk", fen, "e6d5", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "ม็-ง๕")
fen = "4k3/8/4M~3/4S3/8/2S5/8/4K3 w - - 0 1"
result = sf.get_san("makruk", fen, "e6d5", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "ง-ง๕")
fen = "4k3/8/8/3S4/8/3S4/8/4K3 w - - 0 1"
result = sf.get_san("makruk", fen, "d3d4")
self.assertEqual(result, "Sd4")
result = sf.get_san("makruk", fen, "d3d4", False, sf.NOTATION_THAI_SAN)
self.assertEqual(result, "ค-ง๔")
result = sf.get_san("makruk", fen, "d3d4", False, sf.NOTATION_THAI_LAN)
self.assertEqual(result, "ค ง๓-ง๔")
UCI_moves = ["e2e4", "e7e5", "g1f3", "b8c6h", "f1c4", "f8c5e"]
SAN_moves = ["e4", "e5", "Nf3", "Nc6/H", "Bc4", "Bc5/E"]
fen = SEIRAWAN
for i, move in enumerate(UCI_moves):
result = sf.get_san("seirawan", fen, move)
self.assertEqual(result, SAN_moves[i])
fen = sf.get_fen("seirawan", SEIRAWAN, UCI_moves[:i + 1])
result = sf.get_san("seirawan", fen, "e1g1")
self.assertEqual(result, "O-O")
result = sf.get_san("seirawan", fen, "e1g1h")
self.assertEqual(result, "O-O/He1")
result = sf.get_san("seirawan", fen, "e1g1e")
self.assertEqual(result, "O-O/Ee1")
result = sf.get_san("seirawan", fen, "h1e1h")
self.assertEqual(result, "O-O/Hh1")
result = sf.get_san("seirawan", fen, "h1e1e")
self.assertEqual(result, "O-O/Eh1")
# Disambiguation only when necessary
fen = "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R[EHeh] w KQABCDEFHkqabcdefh - 2 3"
result = sf.get_san("seirawan", fen, "b1d2e")
self.assertEqual(result, "Nd2/E")
result = sf.get_san("seirawan", fen, "b1d2")
self.assertEqual(result, "Nbd2")
def test_get_san_moves(self):
UCI_moves = ["e2e4", "e7e5", "g1f3", "b8c6h", "f1c4", "f8c5e"]
SAN_moves = ["e4", "e5", "Nf3", "Nc6/H", "Bc4", "Bc5/E"]
result = sf.get_san_moves("seirawan", SEIRAWAN, UCI_moves)
self.assertEqual(result, SAN_moves)
UCI_moves = ["c3c4", "g7g6", "b2h8"]
SAN_moves = ["P-76", "P-34", "Bx22="]
result = sf.get_san_moves("shogi", SHOGI, UCI_moves)
self.assertEqual(result, SAN_moves)
UCI_moves = ["h3e3", "h10g8", "h1g3", "c10e8", "a1a3", "i10h10"]
SAN_moves = ["C2=5", "H8+7", "H2+3", "E3+5", "R9+2", "R9=8"]
result = sf.get_san_moves("xiangqi", XIANGQI, UCI_moves, False, sf.NOTATION_XIANGQI_WXF)
self.assertEqual(result, SAN_moves)
UCI_moves = ["e2e4", "d7d5", "f1a6+", "d8d6"]
SAN_moves = ["e4", "d5", "Ba6=A", "Qd6"]
result = sf.get_san_moves("shogun", SHOGUN, UCI_moves)
self.assertEqual(result, SAN_moves)
def test_gives_check(self):
result = sf.gives_check("capablanca", CAPA, [])
self.assertFalse(result)
result = sf.gives_check("capablanca", CAPA, ["e2e4"])
self.assertFalse(result)
moves = ["g2g3", "d7d5", "a2a3", "c8h3"]
result = sf.gives_check("capablanca", CAPA, moves)
self.assertTrue(result)
# Test giving check to pseudo royal piece
result = sf.gives_check("atomic", CHESS, [])
self.assertFalse(result)
result = sf.gives_check("atomic", CHESS, ["e2e4"])
self.assertFalse(result)
result = sf.gives_check("atomic", CHESS, ["e2e4", "d7d5", "f1b5"])
self.assertTrue(result)
result = sf.gives_check("atomic", "rnbqkbnr/ppp2ppp/8/8/8/8/PPP2PPP/RNBQKBNR w KQkq - 0 4", ["d1d7"])
self.assertTrue(result)
result = sf.gives_check("atomic", "8/8/kK6/8/8/8/Q7/8 b - - 0 1", [])
self.assertFalse(result)
# pseudo-royal duple check
result = sf.gives_check("spartan", "lgkcckw1/hhhhhhhh/1N3lN1/8/8/8/PPPPPPPP/R1BQKB1R b KQ - 11 6", [])
self.assertTrue(result)
result = sf.gives_check("spartan", "lgkcckwl/hhhhhhhh/6N1/8/8/8/PPPPPPPP/RNBQKB1R b KQ - 5 3", [])
self.assertFalse(result)
result = sf.gives_check("spartan", "lgkcckwl/hhhhhhhh/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1", [])
self.assertFalse(result)
# Shako castling discovered check
result = sf.gives_check("shako", "10/5r4/2p3pBk1/1p6Pr/p3p5/9e/1PP2P4/P2P2PP2/ER3K2R1/8C1 w K - 7 38", ["f2h2"])
self.assertTrue(result)
# Janggi palace discovered check
result = sf.gives_check("janggi", "4ka3/4a4/9/4R4/2B6/9/9/5K3/4p4/3r5 b - - 0 113", ["e2f2"])
self.assertTrue(result)
def test_is_capture(self):
result = sf.is_capture("chess", CHESS, [], "e2e4")
self.assertFalse(result)
result = sf.is_capture("chess", CHESS, ["e2e4", "e7e5", "g1f3", "b8c6", "f1c4", "f8c5"], "e1g1")
self.assertFalse(result)
result = sf.is_capture("chess", CHESS, ["e2e4", "g8f6", "e4e5", "d7d5"], "e5f6")
self.assertTrue(result)
# en passant
result = sf.is_capture("chess", CHESS, ["e2e4", "g8f6", "e4e5", "d7d5"], "e5d6")
self.assertTrue(result)
# 960 castling
result = sf.is_capture("chess", "bqrbkrnn/pppppppp/8/8/8/8/PPPPPPPP/BQRBKRNN w CFcf - 0 1", ["g1f3", "h8g6"], "e1f1", True)
self.assertFalse(result)