--- /dev/null
+/*
+ Based on Jean-Francois Romang work
+ https://github.com/jromang/Stockfish/blob/pyfish/src/pyfish.cpp
+*/
+
+#include <Python.h>
+
+#include "misc.h"
+#include "types.h"
+#include "bitboard.h"
+#include "evaluate.h"
+#include "position.h"
+#include "search.h"
+#include "syzygy/tbprobe.h"
+#include "thread.h"
+#include "tt.h"
+#include "uci.h"
+#include "piece.h"
+#include "variant.h"
+
+static PyObject* PyFFishError;
+
+namespace PSQT {
+ void init(const Variant* v);
+}
+
+using namespace std;
+
+namespace
+{
+
+const string move_to_san(Position& pos, Move m, const bool shogi) {
+ Bitboard others, b;
+ string san;
+ Color us = pos.side_to_move();
+ Square from = from_sq(m);
+ Square to = to_sq(m);
+ Piece pc = pos.piece_on(from);
+ PieceType pt = type_of(pc);
+
+ string protocol = Options["Protocol"];
+ Options["Protocol"] = string(shogi ? "usi" : "uci");
+
+ if (type_of(m) == CASTLING)
+ {
+ san = to > from ? "O-O" : "O-O-O";
+
+ if (is_gating(m))
+ {
+ san += string("/") + pos.piece_to_char()[make_piece(WHITE, gating_type(m))];
+ san += gating_square(m) == to ? UCI::square(pos, to) : UCI::square(pos, from);
+ }
+ }
+ else
+ {
+ if (type_of(m) == DROP)
+ san += UCI::dropped_piece(pos, m) + (shogi ? '*' : '@');
+ else
+ {
+ if (pt != PAWN)
+ {
+ if (pos.is_promoted(from) && shogi)
+ san += "+" + string(1, toupper(pos.piece_to_char()[pos.unpromoted_piece_on(from)]));
+ else if (pos.piece_to_char_synonyms()[make_piece(WHITE, pt)] != ' ')
+ san += pos.piece_to_char_synonyms()[make_piece(WHITE, pt)];
+ else
+ san += pos.piece_to_char()[make_piece(WHITE, pt)];
+
+ // A disambiguation occurs if we have more then one piece of type 'pt'
+ // that can reach 'to' with a legal move.
+ others = b = ((pos.capture(m) ? attacks_bb(~us, pt == HORSE ? KNIGHT : pt, to, pos.pieces())
+ : moves_bb(~us, pt == HORSE ? KNIGHT : pt, to, pos.pieces())) & pos.pieces(us, pt)) ^ from;
+
+ while (b)
+ {
+ Square s = pop_lsb(&b);
+ if ( !pos.pseudo_legal(make_move(s, to))
+ || !pos.legal(make_move(s, to))
+ || (shogi && pos.unpromoted_piece_on(s) != pos.unpromoted_piece_on(from)))
+ others ^= s;
+ }
+
+ if (!others)
+ { /* disambiguation is not needed */ }
+ else if (!(others & file_bb(from)) && !shogi)
+ san += UCI::square(pos, from)[0];
+ else if (!(others & rank_bb(from)) && !shogi)
+ san += UCI::square(pos, from)[1];
+ else
+ san += UCI::square(pos, from);
+ }
+
+ if (pos.capture(m) && from != to)
+ {
+ if (pt == PAWN)
+ san += UCI::square(pos, from)[0];
+ san += 'x';
+ }
+ else if (shogi)
+ san += '-';
+ }
+
+ san += UCI::square(pos, to);
+
+ if (type_of(m) == PROMOTION)
+ san += string("=") + pos.piece_to_char()[make_piece(WHITE, promotion_type(m))];
+ else if (type_of(m) == PIECE_PROMOTION)
+ san += string("+");
+ else if (type_of(m) == PIECE_DEMOTION)
+ san += string("-");
+ else if (type_of(m) == NORMAL && shogi && pos.pseudo_legal(make<PIECE_PROMOTION>(from, to)))
+ san += string("=");
+ else if (is_gating(m))
+ san += string("/") + pos.piece_to_char()[make_piece(WHITE, gating_type(m))];
+ }
+
+ if (pos.gives_check(m) && (!shogi))
+ {
+ StateInfo st;
+ pos.do_move(m, st);
+ san += MoveList<LEGAL>(pos).size() ? "+" : "#";
+ pos.undo_move(m);
+ }
+ // reset protocol
+ Options["Protocol"] = protocol;
+ return san;
+}
+
+bool hasInsufficientMaterial(Color c, const Position& pos) {
+
+ if (pos.captures_to_hand() || pos.count_in_hand(c, ALL_PIECES))
+ return false;
+
+ for (PieceType pt : { ROOK, QUEEN, ARCHBISHOP, CHANCELLOR, SILVER })
+ if (pos.count(c, pt) || (pos.count(c, PAWN) && pos.promotion_piece_types().find(pt) != pos.promotion_piece_types().end()))
+ return false;
+
+ // To avoid false positives, treat pawn + anything as sufficient mating material.
+ // This is too conservative for South-East Asian variants.
+ if (pos.count(c, PAWN) && pos.count<ALL_PIECES>() >= 4)
+ return false;
+
+ if (pos.count(c, KNIGHT) >= 2 || (pos.count(c, KNIGHT) && (pos.count(c, BISHOP) || pos.count(c, FERS) || pos.count(c, FERS_ALFIL))))
+ return false;
+
+ // Check for opposite colored color-bound pieces
+ if ( (pos.count(c, BISHOP) || pos.count(c, FERS_ALFIL))
+ && (DarkSquares & pos.pieces(BISHOP, FERS_ALFIL)) && (~DarkSquares & pos.pieces(BISHOP, FERS_ALFIL)))
+ return false;
+
+ if (pos.count(c, FERS) && (DarkSquares & pos.pieces(FERS)) && (~DarkSquares & pos.pieces(FERS)))
+ return false;
+
+ if (pos.pieces(c, CANNON, JANGGI_CANNON) && (pos.count(c, ALL_PIECES) > 2 || pos.count(~c, ALL_PIECES) > 1))
+ return false;
+
+ if (pos.count(c, JANGGI_ELEPHANT) >= 2)
+ return false;
+
+ // Pieces sufficient for stalemate (Xiangqi)
+ if (pos.stalemate_value() != VALUE_DRAW)
+ for (PieceType pt : { HORSE, SOLDIER, JANGGI_ELEPHANT })
+ if (pos.count(c, pt))
+ return false;
+
+ return true;
+}
+
+void buildPosition(Position& pos, StateListPtr& states, const char *variant, const char *fen, PyObject *moveList, const bool chess960) {
+ states = StateListPtr(new std::deque<StateInfo>(1)); // Drop old and create a new one
+
+ const Variant* v = variants.find(string(variant))->second;
+ if (strcmp(fen, "startpos") == 0)
+ fen = v->startFen.c_str();
+ bool sfen = false;
+ Options["Protocol"] = string("uci");
+ Options["UCI_Chess960"] = (chess960) ? UCI::Option(true) : UCI::Option(false);
+ pos.set(v, string(fen), Options["UCI_Chess960"], &states->back(), Threads.main(), sfen);
+
+ // parse move list
+ int numMoves = PyList_Size(moveList);
+ for (int i=0; i<numMoves ; i++) {
+ string moveStr( PyBytes_AS_STRING(PyUnicode_AsEncodedString( PyList_GetItem(moveList, i), "UTF-8", "strict")) );
+ Move m;
+ if ((m = UCI::to_move(pos, moveStr)) != MOVE_NONE)
+ {
+ // do the move
+ states->emplace_back();
+ pos.do_move(m, states->back());
+ }
+ else
+ {
+ PyErr_SetString(PyExc_ValueError, (string("Invalid move '")+moveStr+"'").c_str());
+ }
+ }
+ return;
+}
+
+}
+
+extern "C" PyObject* pyffish_info(PyObject* self) {
+ return Py_BuildValue("s", engine_info().c_str());
+}
+
+// INPUT option name, option value
+extern "C" PyObject* pyffish_setOption(PyObject* self, PyObject *args) {
+ const char *name;
+ PyObject *valueObj;
+ if (!PyArg_ParseTuple(args, "sO", &name, &valueObj)) return NULL;
+
+ if (Options.count(name))
+ Options[name] = string(PyBytes_AS_STRING(PyUnicode_AsEncodedString(PyObject_Str(valueObj), "UTF-8", "strict")));
+ else
+ {
+ PyErr_SetString(PyExc_ValueError, (string("No such option ")+name+"'").c_str());
+ return NULL;
+ }
+ Py_RETURN_NONE;
+}
+
+// INPUT variant
+extern "C" PyObject* pyffish_startFen(PyObject* self, PyObject *args) {
+ const char *variant;
+
+ if (!PyArg_ParseTuple(args, "s", &variant)) {
+ return NULL;
+ }
+
+ return Py_BuildValue("s", variants.find(string(variant))->second->startFen.c_str());
+}
+
+// INPUT variant
+extern "C" PyObject* pyffish_twoBoards(PyObject* self, PyObject *args) {
+ const char *variant;
+
+ if (!PyArg_ParseTuple(args, "s", &variant)) {
+ return NULL;
+ }
+
+ return Py_BuildValue("O", variants.find(string(variant))->second->twoBoards ? Py_True : Py_False);
+}
+
+// INPUT variant, fen, move
+extern "C" PyObject* pyffish_getSAN(PyObject* self, PyObject *args) {
+ PyObject* moveList = PyList_New(0);
+ Position pos;
+ const char *fen, *variant, *move;
+
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "sss|p", &variant, &fen, &move, &chess960)) {
+ return NULL;
+ }
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ string moveStr = move;
+ const Variant* v = variants.find(string(variant))->second;
+ const bool shogi = v->variantTemplate == "shogi";
+ return Py_BuildValue("s", move_to_san(pos, UCI::to_move(pos, moveStr), shogi).c_str());
+}
+
+// INPUT variant, fen, movelist
+extern "C" PyObject* pyffish_getSANmoves(PyObject* self, PyObject *args) {
+ PyObject* sanMoves = PyList_New(0), *moveList;
+ Position pos;
+ const char *fen, *variant;
+
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, sanMoves, chess960);
+
+ const Variant* v = variants.find(string(variant))->second;
+ const bool shogi = v->variantTemplate == "shogi";
+
+ int numMoves = PyList_Size(moveList);
+ for (int i=0; i<numMoves ; i++) {
+ string moveStr( PyBytes_AS_STRING(PyUnicode_AsEncodedString( PyList_GetItem(moveList, i), "UTF-8", "strict")) );
+ Move m;
+ if ((m = UCI::to_move(pos, moveStr)) != MOVE_NONE)
+ {
+ //add to the san move list
+ PyObject *move=Py_BuildValue("s", move_to_san(pos, m, shogi).c_str());
+ PyList_Append(sanMoves, move);
+ Py_XDECREF(move);
+
+ //do the move
+ states->emplace_back();
+ pos.do_move(m, states->back());
+ }
+ else
+ {
+ PyErr_SetString(PyExc_ValueError, (string("Invalid move '")+moveStr+"'").c_str());
+ return NULL;
+ }
+ }
+ return sanMoves;
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_legalMoves(PyObject* self, PyObject *args) {
+ PyObject* legalMoves = PyList_New(0), *moveList;
+ Position pos;
+ const char *fen, *variant;
+
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ for (const auto& m : MoveList<LEGAL>(pos))
+ {
+ PyObject *moveStr;
+ moveStr=Py_BuildValue("s", UCI::move(pos, m).c_str());
+ PyList_Append(legalMoves, moveStr);
+ Py_XDECREF(moveStr);
+ }
+ return legalMoves;
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_getFEN(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+
+ int chess960 = false, sfen = false, showPromoted = false;
+ if (!PyArg_ParseTuple(args, "ssO!|ppp", &variant, &fen, &PyList_Type, &moveList, &chess960, &sfen, &showPromoted)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ return Py_BuildValue("s", pos.fen(sfen, showPromoted).c_str());
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_givesCheck(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ return Py_BuildValue("O", pos.checkers() ? Py_True : Py_False);
+}
+
+// INPUT variant, fen, move list
+// should only be called when the move list is empty
+extern "C" PyObject* pyffish_gameResult(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+ bool gameEnd;
+ Value result;
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ assert(!MoveList<LEGAL>(pos).size());
+ gameEnd = pos.is_immediate_game_end(result);
+ if (!gameEnd)
+ result = pos.checkers() ? pos.checkmate_value() : pos.stalemate_value();
+
+ return Py_BuildValue("i", result);
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_isImmediateGameEnd(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+ bool gameEnd;
+ Value result;
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ gameEnd = pos.is_immediate_game_end(result);
+ return Py_BuildValue("(Oi)", gameEnd ? Py_True : Py_False, result);
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_isOptionalGameEnd(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+ bool gameEnd;
+ Value result;
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+ gameEnd = pos.is_optional_game_end(result);
+ return Py_BuildValue("(Oi)", gameEnd ? Py_True : Py_False, result);
+}
+
+// INPUT variant, fen, move list
+extern "C" PyObject* pyffish_hasInsufficientMaterial(PyObject* self, PyObject *args) {
+ PyObject *moveList;
+ Position pos;
+ const char *fen, *variant;
+ int chess960 = false;
+ if (!PyArg_ParseTuple(args, "ssO!|p", &variant, &fen, &PyList_Type, &moveList, &chess960)) {
+ return NULL;
+ }
+
+ StateListPtr states(new std::deque<StateInfo>(1));
+ buildPosition(pos, states, variant, fen, moveList, chess960);
+
+ bool wInsufficient = hasInsufficientMaterial(WHITE, pos);
+ bool bInsufficient = hasInsufficientMaterial(BLACK, pos);
+
+ return Py_BuildValue("(OO)", wInsufficient ? Py_True : Py_False, bInsufficient ? Py_True : Py_False);
+}
+
+
+static PyMethodDef PyFFishMethods[] = {
+ {"info", (PyCFunction)pyffish_info, METH_NOARGS, "Get Stockfish version info."},
+ {"set_option", (PyCFunction)pyffish_setOption, METH_VARARGS, "Set UCI option."},
+ {"start_fen", (PyCFunction)pyffish_startFen, METH_VARARGS, "Get starting position FEN."},
+ {"two_boards", (PyCFunction)pyffish_twoBoards, METH_VARARGS, "Checks whether the variant is played on two boards."},
+ {"get_san", (PyCFunction)pyffish_getSAN, METH_VARARGS, "Get SAN move from given FEN and UCI move."},
+ {"get_san_moves", (PyCFunction)pyffish_getSANmoves, METH_VARARGS, "Get SAN movelist from given FEN and UCI movelist."},
+ {"legal_moves", (PyCFunction)pyffish_legalMoves, METH_VARARGS, "Get legal moves from given FEN and movelist."},
+ {"get_fen", (PyCFunction)pyffish_getFEN, METH_VARARGS, "Get resulting FEN from given FEN and movelist."},
+ {"gives_check", (PyCFunction)pyffish_givesCheck, METH_VARARGS, "Get check status from given FEN and movelist."},
+ {"game_result", (PyCFunction)pyffish_gameResult, METH_VARARGS, "Get result from given FEN, considering variant end, checkmate, and stalemate."},
+ {"is_immediate_game_end", (PyCFunction)pyffish_isImmediateGameEnd, METH_VARARGS, "Get result from given FEN if variant rules ends the game."},
+ {"is_optional_game_end", (PyCFunction)pyffish_isOptionalGameEnd, METH_VARARGS, "Get result from given FEN it rules enable game end by player."},
+ {"has_insufficient_material", (PyCFunction)pyffish_hasInsufficientMaterial, METH_VARARGS, "Checks for insufficient material."},
+ {NULL, NULL, 0, NULL}, // sentinel
+};
+
+static PyModuleDef pyffishmodule = {
+ PyModuleDef_HEAD_INIT,
+ "pyffish",
+ "Fairy-Stockfish extension module.",
+ -1,
+ PyFFishMethods,
+};
+
+PyMODINIT_FUNC PyInit_pyffish() {
+ PyObject* module;
+
+ module = PyModule_Create(&pyffishmodule);
+ if (module == NULL) {
+ return NULL;
+ }
+ PyFFishError = PyErr_NewException("pyffish.error", NULL, NULL);
+ Py_INCREF(PyFFishError);
+ PyModule_AddObject(module, "error", PyFFishError);
+
+ // initialize stockfish
+ pieceMap.init();
+ variants.init();
+ UCI::init(Options);
+ PSQT::init(variants.find("chess")->second);
+ Bitboards::init();
+ Position::init();
+ Bitbases::init();
+ Search::init();
+ Threads.set(Options["Threads"]);
+ Search::clear(); // After threads are up
+
+ return module;
+};
--- /dev/null
+# -*- 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[HEhe] 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
+
+# Hybrid variant of Gothic-chess and crazyhouse, using Capablanca as a template
+[gothhouse:capablanca]
+startFen = rnbqckabnr/pppppppppp/10/10/10/10/PPPPPPPPPP/RNBQCKABNR[] w KQkq - 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"""
+
+print(ini_text, file=open("variants.ini", "w"))
+sf.set_option("VariantPath", "variants.ini")
+
+
+variant_positions = {
+ "chess": {
+ "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
+ },
+ "seirawan": {
+ "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
+ },
+ "sittuyin": {
+ "8/8/4pppp/pppp4/4PPPP/PPPP4/8/8[KFRRSSNNkfrrssnn] w - - 0 1": (False, False), # starting position
+ "k7/8/8/8/8/8/8/K7[] w - - 0 1": (True, True), # K vs K
+ "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
+ },
+ "xiangqi": {
+ "rnbakabnr/9/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/9/RNBAKABNR w - - 0 1": (False, False), # starting position
+ "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), # starting position
+ "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
+ }
+}
+
+
+class TestPyffish(unittest.TestCase):
+ def test_info(self):
+ result = sf.info()
+ self.assertEqual(result[:15], "Fairy-Stockfish")
+
+ 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"])
+
+ 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.assertEqual(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)
+
+ def test_get_fen(self):
+ result = sf.get_fen("chess", CHESS, [])
+ self.assertEqual(result, CHESS)
+
+ result = sf.get_fen("capablanca", CAPA, [])
+ self.assertEqual(result, CAPA)
+
+ result = sf.get_fen("xiangqi", XIANGQI, [])
+ self.assertEqual(result, XIANGQI)
+
+ 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", CHESS960)
+
+ # 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)
+
+ 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+")
+
+ result = sf.get_san("capablanca", CAPA, "e2e4")
+ self.assertEqual(result, "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")
+
+ result = sf.get_san("shogi", SHOGI, "i3i4")
+ self.assertEqual(result, "P-1f")
+
+ result = sf.get_san("shogi", SHOGI, "f1e2")
+ self.assertEqual(result, "G4i-5h")
+
+ fen = "lnsgkgsnl/1r5b1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/1B5R1/LNSGKGSNL w -"
+ result = sf.get_san("shogi", fen, "b2h8")
+ self.assertEqual(result, "Bx2b=")
+ result = sf.get_san("shogi", fen, "b2h8+")
+ self.assertEqual(result, "Bx2b+")
+
+ fen = "lnsgkg1nl/1r5s1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/7R1/LNSGKGSNL[Bb] w "
+ result = sf.get_san("shogi", fen, "B@g7")
+ self.assertEqual(result, "B*3c")
+
+ fen = "lnsgkg1nl/1r4s+B1/pppppp1pp/6p2/9/2P6/PP1PPPPPP/7R1/LNSGKGSNL[B] w "
+ result = sf.get_san("shogi", fen, "h8g7")
+ 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")
+ self.assertEqual(result, "+S-6b")
+
+ result = sf.get_san("xiangqi", XIANGQI, "h1g3")
+ self.assertEqual(result, "Hg3")
+
+ result = sf.get_san("xiangqi", XIANGQI, "c1e3")
+ self.assertEqual(result, "Ece3")
+
+ result = sf.get_san("xiangqi", XIANGQI, "h3h10")
+ self.assertEqual(result, "Cxh10")
+
+ result = sf.get_san("xiangqi", XIANGQI, "h3h5")
+ self.assertEqual(result, "Ch5")
+
+ 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")
+
+ 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")
+
+ 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)
+
+ 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)
+
+ def test_game_result(self):
+ result = sf.game_result("chess", CHESS, ["f2f3", "e7e5", "g2g4", "d8h4"])
+ self.assertTrue(result < 0)
+
+ 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.assertTrue(result[1] < 0)
+
+ def test_is_optional_game_end(self):
+ result = sf.is_optional_game_end("capablanca", CAPA, [])
+ self.assertFalse(result[0])
+
+ 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))
+
+
+if __name__ == '__main__':
+ unittest.main(verbosity=2)
projects / fairystockfish.git / commitdiff