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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"
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
promotionRank = 6
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
whiteFlag = *8
blackFlag = *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
[makhouse:makruk]
startFen = rnsmksnr/8/pppppppp/8/8/PPPPPPPP/8/RNSKMSNR[] w - - 0 1
pieceDrops = true
capturesToHand = true
firstRankPawnDrops = true
promotionZonePawnDrops = true
immobilityIllegal = true
"""
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
},
}
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_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)
# 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)
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)
# 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)
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")
# 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)
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")
# 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")
# 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")
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")
fen = "rnsm1s1r/4n1k1/1ppppppp/p7/2PPP3/PP3PPP/4N2R/RNSKMS2 b - - 1 5"
result = sf.get_san("makruk", fen, "f8f7")
self.assertEqual(result, "Sf7")
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")
fen = "4k3/8/8/3S4/8/3S4/8/4K3 w - - 0 1"
result = sf.get_san("makruk", fen, "d3d4")
self.assertEqual(result, "Sd4")
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)
# 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_game_result(self):
result = sf.game_result("chess", CHESS, ["f2f3", "e7e5", "g2g4", "d8h4"])
self.assertEqual(result, -sf.VALUE_MATE)
# shogi pawn drop mate
result = sf.game_result("shogi", "lnsg3nk/1r2b1gs1/ppppppp1p/7N1/7p1/9/PPPPPPPP1/1B5R1/LNSGKGS1L[P] w 0 1", ["P@i8"])
self.assertEqual(result, sf.VALUE_MATE)
# losers checkmate
result = sf.game_result("losers", CHESS, ["f2f3", "e7e5", "g2g4", "d8h4"])
self.assertEqual(result, sf.VALUE_MATE)
# suicide stalemate
result = sf.game_result("suicide", "8/8/8/7p/7P/8/8/8 w - - 0 1", [])
self.assertEqual(result, sf.VALUE_DRAW)
result = sf.game_result("suicide", "8/8/8/7p/7P/7P/8/8 w - - 0 1", [])
self.assertEqual(result, -sf.VALUE_MATE)
result = sf.game_result("suicide", "8/8/8/7p/7P/8/8/n7 w - - 0 1", [])
self.assertEqual(result, sf.VALUE_MATE)
# atomic check- and stalemate
# checkmate
result = sf.game_result("atomic", "BQ6/Rk6/8/8/8/8/8/4K3 b - - 0 1", [])
self.assertEqual(result, -sf.VALUE_MATE)
# stalemate
result = sf.game_result("atomic", "KQ6/Rk6/2B5/8/8/8/8/8 b - - 0 1", [])
self.assertEqual(result, sf.VALUE_DRAW)
def test_is_immediate_game_end(self):
result = sf.is_immediate_game_end("capablanca", CAPA, [])
self.assertFalse(result[0])
# bikjang (facing kings)
moves = "e2e3 e9f9 h3d3 e7f7 i1i3 h10i8 i3h3 c10e7 h3h8 i10i9 h8b8 i9g9 d3f3 f9e9 f3f10 e7c10 f10c10 b10c8 c10g10 g9f9 b8c8 a10b10 b3f3 f9h9 a1a2 h9f9 a2d2 b10b9 d2d10 e9d10 c8c10 d10d9 f3f9 i8g9 f9b9 a7a6 g10g7 f7f6 e4e5 c7d7 g1e4 i7i6 e4b6 d9d8 c10c8 d8d9 b9g9 d7d6 b6e8 i6h6 e5e6 f6e6 c1e4 a6b6 e4b6 d6d5 c4c5 d9d10 e3d3 h6i6 c5c6 d5c5"
result = sf.is_immediate_game_end("janggi", JANGGI, moves.split())
self.assertFalse(result[0])
moves = "e2e3 e9f9 h3d3 e7f7 i1i3 h10i8 i3h3 c10e7 h3h8 i10i9 h8b8 i9g9 d3f3 f9e9 f3f10 e7c10 f10c10 b10c8 c10g10 g9f9 b8c8 a10b10 b3f3 f9h9 a1a2 h9f9 a2d2 b10b9 d2d10 e9d10 c8c10 d10d9 f3f9 i8g9 f9b9 a7a6 g10g7 f7f6 e4e5 c7d7 g1e4 i7i6 e4b6 d9d8 c10c8 d8d9 b9g9 d7d6 b6e8 i6h6 e5e6 f6e6 c1e4 a6b6 e4b6 d6d5 c4c5 d9d10 e3d3 h6i6 c5c6 d5c5 d3d3"
result = sf.is_immediate_game_end("janggi", JANGGI, moves.split())
self.assertTrue(result[0])
self.assertEqual(result[1], -sf.VALUE_MATE)
def test_is_optional_game_end(self):
result = sf.is_optional_game_end("capablanca", CAPA, [])
self.assertFalse(result[0])
# sittuyin stalemate due to optional promotion
result = sf.is_optional_game_end("sittuyin", "1k4PK/3r4/8/8/8/8/8/8[] w - - 0 1", [])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# Xiangqi chasing rules
# Also see http://www.asianxiangqi.org/English/AXF_rules_Eng.pdf
# Direct chase by cannon
result = sf.is_optional_game_end("xiangqi", "2bakabnr/9/r1n1c4/2p1p1p1p/PP7/9/4P1P1P/2C3NC1/9/1NBAKAB1R w - - 0 1", ["c3a3", "a8b8", "a3b3", "b8a8", "b3a3", "a8b8", "a3b3", "b8a8", "b3a3"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Chase with chasing side to move
result = sf.is_optional_game_end("xiangqi", "2bakabnr/9/r1n1c4/2p1p1p1p/PP7/9/4P1P1P/2C3NC1/9/1NBAKAB1R w - - 0 1", ["c3a3", "a8b8", "a3b3", "b8a8", "b3a3", "a8b8", "a3b3", "b8a8", "b3a3", "a8b8", "a3b3", "b8a8"])
self.assertTrue(result[0])
self.assertEqual(result[1], -sf.VALUE_MATE)
# Discovered chase by cannon (including pawn capture)
result = sf.is_optional_game_end("xiangqi", "2bakabr1/9/9/r1p1p1p2/p7R/P8/9/9/9/CC1AKA3 w - - 0 1", ["a5a6", "a7b7", "a6b6", "b7a7", "b6a6", "a7b7", "a6b6", "b7a7", "b6a6"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Chase by soldier (draw)
result = sf.is_optional_game_end("xiangqi", "2bakabr1/9/9/r1p1p1p2/p7R/P8/9/9/9/1C1AKA3 w - - 0 1", ["a5a6", "a7b7", "a6b6", "b7a7", "b6a6", "a7b7", "a6b6", "b7a7", "b6a6"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# Discovered and anti-discovered chase by cannon
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/5C3/5c3/5C3/9/9/5p3/4K4 w - - 0 1", ["f5d5", "f6d6", "d5f5", "d6f6", "f5d5", "f6d6", "d5f5", "d6f6"])
self.assertTrue(result[0])
self.assertEqual(result[1], -sf.VALUE_MATE)
# Mutual chase (draw)
result = sf.is_optional_game_end("xiangqi", "4k4/7n1/9/4pR3/9/9/4P4/9/9/4K4 w - - 0 1", ["f7h7"] + 2 * ["h9f8", "h7h8", "f8g6", "h8g8", "g6i7", "g8g7", "i7h9", "g7h7"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# Perpetual check vs. intermittent checks
result = sf.is_optional_game_end("xiangqi", "9/3kc4/3a5/3P5/9/4p4/9/4K4/9/3C5 w - - 0 1", 2 * ['d7e7', 'e5d5', 'e7d7', 'd5e5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Perpetual check by soldier
result = sf.is_optional_game_end("xiangqi", "3k5/9/9/9/9/5p3/9/5p3/5K3/5C3 w - - 0 1", 2 * ['f2e2', 'f3e3', 'e2f2', 'e3f3'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "3k5/4P4/4b4/3C5/4c4/9/9/9/9/5K3 w - - 0 1", 2 * ['d7e7', 'e8g6', 'e7d7', 'g6e8'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "3k5/9/9/9/9/9/9/9/cr1CAK3/9 w - - 0 1", 2 * ['d2d4', 'b2b4', 'd4d2', 'b4b2'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/5C3/5c3/5C3/9/9/5p3/4K4 w - - 0 1", 2 * ['f5d5', 'f6d6', 'd5f5', 'd6f6'])
self.assertTrue(result[0])
self.assertEqual(result[1], -sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "4k4/9/4b4/2c2nR2/9/9/9/9/9/3K5 w - - 0 1", 2 * ['g7g6', 'f7g9', 'g6g7', 'g9f7'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "3P5/3k5/3nn4/9/9/9/9/9/9/5K3 w - - 0 1", 2 * ['d10e10', 'd9e9', 'e10d10', 'e9d9'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "4ck3/9/9/9/9/2r1R4/9/9/4A4/3AK4 w - - 0 1", 2 * ['e5e4', 'c5c4', 'e4e5', 'c4c5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
result = sf.is_optional_game_end("xiangqi", "4k4/9/9/c1c6/9/r8/9/9/C8/3K5 w - - 0 1", 2 * ['a2c2', 'a5c5', 'c2a2', 'c5a5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Mutual perpetual check
result = sf.is_optional_game_end("xiangqi", "9/4c4/3k5/3r5/9/9/4C4/9/4K4/3R5 w - - 0 1", 2 * ['e4d4', 'd7e7', 'd4e4', 'e7d7'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
result = sf.is_optional_game_end("xiangqi", "3k5/6c2/9/7P1/6c2/6P2/9/9/9/5K3 w - - 0 1", 2 * ['h7g7', 'g6h6', 'g7h7', 'h6g6'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
result = sf.is_optional_game_end("xiangqi", "4ck3/9/9/9/9/2r1R1N2/6N2/9/4A4/3AK4 w - - 0 1", 2 * ['e5e4', 'c5c4', 'e4e5', 'c4c5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/c8/9/P1P6/9/2C6/9/3K5 w - - 0 1", 2 * ['c3a3', 'a7c7', 'a3c3', 'c7a7'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
result = sf.is_optional_game_end("xiangqi", "4k4/9/r1r6/9/PPPP5/9/9/9/1C7/5K3 w - - 0 1", ['b2a2'] + 2 * ['a8b8', 'a2c2', 'c8d8', 'c2b2', 'b8a8', 'b2d2', 'd8c8', 'd2a2'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# Corner cases
# D106: Chariot chases cannon, but attack actually does not change (draw)
result = sf.is_optional_game_end("xiangqi", "3k2b2/4P4/4b4/9/8p/6Bc1/6P1P/3AB4/4pp3/1p1K3R1[] w - - 0 1", 2 * ["h1h2", "h5h4", "h2h1", "h4h5"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# D39: Chased chariot pinned by horse + mutual chase (controversial if pinned chariot chases)
result = sf.is_optional_game_end("xiangqi", "2baka1r1/C4rN2/9/1Rp1p4/9/9/4P4/9/4A4/4KA3 w - - 0 1", ["b7b9"] + 2 * ["f10e9", "b9b10", "e9f10", "b10b9"])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# D39: Chased chariot pinned by horse + mutual chase (controversial if pinned chariot chases)
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/9/7r1/9/2nRA3c/4K4 w - - 0 1", 2 * ['e2f1', 'h4h2', 'f1e2', 'h2h4'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Creating pins to undermine root
result = sf.is_optional_game_end("xiangqi", "4k4/4c4/9/4p4/9/9/3rn4/3NR4/4K4/9 b - - 0 1", 2 * ['e4g5', 'e2f2', 'g5e4', 'f2e2'])
self.assertTrue(result[0])
self.assertEqual(result[1], -sf.VALUE_MATE)
# Discovered check capture threat by rook
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/1N2P1C2/9/4BC3/9/cr1RK4 w - - 0 1", 2 * ['b5c3', 'b1c1', 'c3b5', 'c1b1'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Creating a pin to undermine root + discovered check threat by horse
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/4c4/3n5/3NBA3/4A4/4K4 w - - 0 1", 2 * ['e1d1', 'e5d5', 'd1e1', 'd5e5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Creating a pin to undermine root + discovered check threat by rook
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/4c4/3r5/3NB4/4A4/4K4 w - - 0 1", 2 * ['e1d1', 'e5d5', 'd1e1', 'd5e5'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# X-Ray protected discovered check
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/9/9/9/9/3NK1cr1 w - - 0 1", 2 * ['d1c3', 'h1h3', 'c3d1', 'h3h1'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# No overprotection by king
result = sf.is_optional_game_end("xiangqi", "3k5/9/9/3n5/9/9/3r5/9/9/3NK4 w - - 0 1", 2 * ['d1c3', 'd4c4', 'c3d1', 'c4d4'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
# Overprotection by king
result = sf.is_optional_game_end("xiangqi", "3k5/9/9/9/9/9/3r5/9/9/3NK4 w - - 0 1", 2 * ['d1c3', 'd4c4', 'c3d1', 'c4d4'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Mutual pins by flying generals
result = sf.is_optional_game_end("xiangqi", "4k4/9/9/9/4n4/9/5C3/9/4N4/4K4 w - - 0 1", 2 * ['e2g1', 'e10f10', 'g1e2', 'f10e10'])
self.assertTrue(result[0])
#self.assertEqual(result[1], sf.VALUE_MATE)
# Fake protection by cannon
result = sf.is_optional_game_end("xiangqi", "5k3/9/9/9/9/1C7/1r7/9/1C7/4K4 w - - 0 1", 2 * ['b5c5', 'b4c4', 'c5b5', 'c4b4'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_MATE)
# Fake protection by cannon + mutual chase
result = sf.is_optional_game_end("xiangqi", "4ka3/c2R1R2c/4b4/9/9/9/9/9/9/4K4 w - - 0 1", 2 * ['f9f7', 'f10e9', 'f7f9', 'e9f10'])
self.assertTrue(result[0])
self.assertEqual(result[1], sf.VALUE_DRAW)
def test_has_insufficient_material(self):
for variant, positions in variant_positions.items():
for fen, expected_result in positions.items():
result = sf.has_insufficient_material(variant, fen, [])
self.assertEqual(result, expected_result, "{}: {}".format(variant, fen))
def test_validate_fen(self):
# valid
for variant, positions in variant_positions.items():
for fen in positions:
self.assertEqual(sf.validate_fen(fen, variant), sf.FEN_OK, "{}: {}".format(variant, fen))
# invalid
for variant, positions in invalid_variant_positions.items():
for fen in positions:
self.assertNotEqual(sf.validate_fen(fen, variant), sf.FEN_OK, "{}: {}".format(variant, fen))
# chess960
self.assertEqual(sf.validate_fen(CHESS960, "chess", True), sf.FEN_OK, "{}: {}".format(variant, fen))
self.assertEqual(sf.validate_fen("nrbqbkrn/pppppppp/8/8/8/8/PPPPPPPP/NRBQBKRN w BGbg - 0 1", "newzealand", True), sf.FEN_OK, "{}: {}".format(variant, fen))
# all variants starting positions
for variant in sf.variants():
fen = sf.start_fen(variant)
self.assertEqual(sf.validate_fen(fen, variant), sf.FEN_OK, "{}: {}".format(variant, fen))
if __name__ == '__main__':
unittest.main(verbosity=2)