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nejlepsi ale BEZ pass a8a7

max2201111
Jul 12th, 2024 (edited)
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  1. import chess
  2. from typing import Iterator, Optional, Dict, Tuple
  3. from chess import Move, BB_ALL, Bitboard, PieceType, Color
  4. import time
  5. from collections import deque
  6. import threading
  7.  
  8. # Definice nových figur
  9. AMAZON = 7
  10. CYRIL = 8
  11. EVE = 9
  12.  
  13. # Rozšíření seznamu PIECE_SYMBOLS
  14. chess.PIECE_SYMBOLS.append('a')
  15. chess.PIECE_SYMBOLS.append('c')
  16. chess.PIECE_SYMBOLS.append('e')
  17.  
  18. class CustomBoard(chess.Board):
  19.     def __init__(self, fen=None):
  20.         self.amazons_white = chess.BB_EMPTY
  21.         self.amazons_black = chess.BB_EMPTY
  22.         self.cyrils_white = chess.BB_EMPTY
  23.         self.cyrils_black = chess.BB_EMPTY
  24.         self.eves_white = chess.BB_EMPTY
  25.         self.eves_black = chess.BB_EMPTY
  26.         super().__init__(None)
  27.         if fen:
  28.             self.set_custom_fen(fen)
  29.         print("Šachovnice inicializována")
  30.         self.debug_amazons()
  31.         self.debug_cyrils()
  32.         self.debug_eves()
  33.  
  34.     def clear_square(self, square):
  35.         super()._remove_piece_at(square)
  36.         self.amazons_white &= ~chess.BB_SQUARES[square]
  37.         self.amazons_black &= ~chess.BB_SQUARES[square]
  38.         self.cyrils_white &= ~chess.BB_SQUARES[square]
  39.         self.cyrils_black &= ~chess.BB_SQUARES[square]
  40.         self.eves_white &= ~chess.BB_SQUARES[square]
  41.         self.eves_black &= ~chess.BB_SQUARES[square]
  42.  
  43.     def set_custom_fen(self, fen):
  44.         parts = fen.split()
  45.         board_part = parts[0]
  46.  
  47.         self.clear()
  48.         self.amazons_white = chess.BB_EMPTY
  49.         self.amazons_black = chess.BB_EMPTY
  50.         self.cyrils_white = chess.BB_EMPTY
  51.         self.cyrils_black = chess.BB_EMPTY
  52.         self.eves_white = chess.BB_EMPTY
  53.         self.eves_black = chess.BB_EMPTY
  54.  
  55.         square = 56
  56.         for c in board_part:
  57.             if c == '/':
  58.                 square -= 16
  59.             elif c.isdigit():
  60.                 square += int(c)
  61.             else:
  62.                 color = chess.WHITE if c.isupper() else chess.BLACK
  63.                 if c.upper() == 'A':
  64.                     if color == chess.WHITE:
  65.                         self.amazons_white |= chess.BB_SQUARES[square]
  66.                     else:
  67.                         self.amazons_black |= chess.BB_SQUARES[square]
  68.                     piece_type = AMAZON
  69.                 elif c.upper() == 'C':
  70.                     if color == chess.WHITE:
  71.                         self.cyrils_white |= chess.BB_SQUARES[square]
  72.                     else:
  73.                         self.cyrils_black |= chess.BB_SQUARES[square]
  74.                     piece_type = CYRIL
  75.                 elif c.upper() == 'E':
  76.                     if color == chess.WHITE:
  77.                         self.eves_white |= chess.BB_SQUARES[square]
  78.                     else:
  79.                         self.eves_black |= chess.BB_SQUARES[square]
  80.                     piece_type = EVE
  81.                 else:
  82.                     piece_type = chess.PIECE_SYMBOLS.index(c.lower())
  83.                 self._set_piece_at(square, piece_type, color)
  84.                 square += 1
  85.  
  86.         self.turn = chess.WHITE if parts[1] == 'w' else chess.BLACK
  87.         self.castling_rights = chess.BB_EMPTY
  88.         if '-' not in parts[2]:
  89.             if 'K' in parts[2]: self.castling_rights |= chess.BB_H1
  90.             if 'Q' in parts[2]: self.castling_rights |= chess.BB_A1
  91.             if 'k' in parts[2]: self.castling_rights |= chess.BB_H8
  92.             if 'q' in parts[2]: self.castling_rights |= chess.BB_A8
  93.         self.ep_square = chess.parse_square(parts[3]) if parts[3] != '-' else None
  94.  
  95.     def _set_piece_at(self, square: chess.Square, piece_type: PieceType, color: Color) -> None:
  96.         self.clear_square(square)
  97.         super()._set_piece_at(square, piece_type, color)
  98.         if piece_type == AMAZON:
  99.             if color == chess.WHITE:
  100.                 self.amazons_white |= chess.BB_SQUARES[square]
  101.             else:
  102.                 self.amazons_black |= chess.BB_SQUARES[square]
  103.         elif piece_type == CYRIL:
  104.             if color == chess.WHITE:
  105.                 self.cyrils_white |= chess.BB_SQUARES[square]
  106.             else:
  107.                 self.cyrils_black |= chess.BB_SQUARES[square]
  108.         elif piece_type == EVE:
  109.             if color == chess.WHITE:
  110.                 self.eves_white |= chess.BB_SQUARES[square]
  111.             else:
  112.                 self.eves_black |= chess.BB_SQUARES[square]
  113.  
  114.     def piece_at(self, square: chess.Square) -> Optional[chess.Piece]:
  115.         if self.amazons_white & chess.BB_SQUARES[square]:
  116.             return chess.Piece(AMAZON, chess.WHITE)
  117.         elif self.amazons_black & chess.BB_SQUARES[square]:
  118.             return chess.Piece(AMAZON, chess.BLACK)
  119.         elif self.cyrils_white & chess.BB_SQUARES[square]:
  120.             return chess.Piece(CYRIL, chess.WHITE)
  121.         elif self.cyrils_black & chess.BB_SQUARES[square]:
  122.             return chess.Piece(CYRIL, chess.BLACK)
  123.         elif self.eves_white & chess.BB_SQUARES[square]:
  124.             return chess.Piece(EVE, chess.WHITE)
  125.         elif self.eves_black & chess.BB_SQUARES[square]:
  126.             return chess.Piece(EVE, chess.BLACK)
  127.         return super().piece_at(square)
  128.  
  129.     def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboard = BB_ALL) -> Iterator[Move]:
  130.         our_pieces = self.occupied_co[self.turn]
  131.         if self.turn == chess.WHITE:
  132.             our_amazons = self.amazons_white
  133.             our_cyrils = self.cyrils_white
  134.             our_eves = self.eves_white
  135.         else:
  136.             our_amazons = self.amazons_black
  137.             our_cyrils = self.cyrils_black
  138.             our_eves = self.eves_black
  139.  
  140.         for from_square in chess.scan_forward(our_amazons & from_mask):
  141.             attacks = self.amazon_attacks(from_square)
  142.             valid_moves = attacks & ~our_pieces & to_mask
  143.             for to_square in chess.scan_forward(valid_moves):
  144.                 yield Move(from_square, to_square)
  145.  
  146.         for from_square in chess.scan_forward(our_cyrils & from_mask):
  147.             attacks = self.cyril_attacks(from_square)
  148.             valid_moves = attacks & ~our_pieces & to_mask
  149.             for to_square in chess.scan_forward(valid_moves):
  150.                 yield Move(from_square, to_square)
  151.  
  152.         for from_square in chess.scan_forward(our_eves & from_mask):
  153.             attacks = self.eve_attacks(from_square)
  154.             valid_moves = attacks & ~our_pieces & to_mask
  155.             for to_square in chess.scan_forward(valid_moves):
  156.                 yield Move(from_square, to_square)
  157.  
  158.         for move in super().generate_pseudo_legal_moves(from_mask, to_mask):
  159.             if self.piece_type_at(move.from_square) not in [AMAZON, CYRIL, EVE]:
  160.                 yield move
  161.  
  162.     def queen_attacks(self, square):
  163.         return self.bishop_attacks(square) | self.rook_attacks(square)
  164.  
  165.     def bishop_attacks(self, square):
  166.         return chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]]
  167.  
  168.     def rook_attacks(self, square):
  169.         return (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
  170.                 chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]])
  171.  
  172.     def amazon_attacks(self, square):
  173.         return self.queen_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]
  174.  
  175.     def cyril_attacks(self, square):
  176.         return self.rook_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]
  177.  
  178.     def eve_attacks(self, square):
  179.         return self.bishop_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]
  180.  
  181.     def is_pseudo_legal(self, move):
  182.         from_square = move.from_square
  183.         to_square = move.to_square
  184.         piece = self.piece_at(from_square)
  185.  
  186.         if not piece or piece.color != self.turn:
  187.             return False
  188.  
  189.         if self.occupied_co[self.turn] & chess.BB_SQUARES[to_square]:
  190.             return False
  191.  
  192.         if self.is_castling(move):
  193.             return True
  194.  
  195.         if piece.piece_type == AMAZON:
  196.             return bool(self.amazon_attacks(from_square) & chess.BB_SQUARES[to_square])
  197.         elif piece.piece_type == CYRIL:
  198.             return bool(self.cyril_attacks(from_square) & chess.BB_SQUARES[to_square])
  199.         elif piece.piece_type == EVE:
  200.             return bool(self.eve_attacks(from_square) & chess.BB_SQUARES[to_square])
  201.         else:
  202.             return super().is_pseudo_legal(move)
  203.  
  204.     def is_legal(self, move):
  205.         if not self.is_pseudo_legal(move):
  206.             return False
  207.  
  208.         from_square = move.from_square
  209.         to_square = move.to_square
  210.         piece = self.piece_at(from_square)
  211.         captured_piece = self.piece_at(to_square)
  212.  
  213.         self.clear_square(from_square)
  214.         self.clear_square(to_square)
  215.         self._set_piece_at(to_square, piece.piece_type, piece.color)
  216.  
  217.         king_square = to_square if piece.piece_type == chess.KING else self.king(self.turn)
  218.         is_check, attacker_square = self._is_attacked_by(not self.turn, king_square)
  219.  
  220.         self.clear_square(to_square)
  221.         self._set_piece_at(from_square, piece.piece_type, piece.color)
  222.         if captured_piece:
  223.             self._set_piece_at(to_square, captured_piece.piece_type, captured_piece.color)
  224.  
  225.         return not is_check
  226.  
  227.     def _is_attacked_by(self, color, square):
  228.         attackers = self.attackers(color, square)
  229.         if attackers:
  230.             for attacker_square in chess.scan_forward(attackers):
  231.                 return True, attacker_square
  232.         return False, None
  233.  
  234.     def attackers(self, color, square):
  235.         attackers = chess.BB_EMPTY
  236.  
  237.         knights = self.knights & self.occupied_co[color]
  238.         attackers |= knights & chess.BB_KNIGHT_ATTACKS[square]
  239.  
  240.         king = self.kings & self.occupied_co[color]
  241.         attackers |= king & chess.BB_KING_ATTACKS[square]
  242.  
  243.         pawns = self.pawns & self.occupied_co[color]
  244.         if color == chess.WHITE:
  245.             attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.BLACK][square]
  246.         else:
  247.             attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.WHITE][square]
  248.  
  249.         queens = self.queens & self.occupied_co[color]
  250.         bishops = (self.bishops | queens) & self.occupied_co[color]
  251.         rooks = (self.rooks | queens) & self.occupied_co[color]
  252.  
  253.         attackers |= chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]] & bishops
  254.         attackers |= (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
  255.                       chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]]) & rooks
  256.  
  257.         amazons = self.amazons_white if color == chess.WHITE else self.amazons_black
  258.         for amazon_square in chess.scan_forward(amazons):
  259.             if self.amazon_attacks(amazon_square) & chess.BB_SQUARES[square]:
  260.                 attackers |= chess.BB_SQUARES[amazon_square]
  261.  
  262.         cyrils = self.cyrils_white if color == chess.WHITE else self.cyrils_black
  263.         for cyril_square in chess.scan_forward(cyrils):
  264.             if self.cyril_attacks(cyril_square) & chess.BB_SQUARES[square]:
  265.                 attackers |= chess.BB_SQUARES[cyril_square]
  266.  
  267.         eves = self.eves_white if color == chess.WHITE else self.eves_black
  268.         for eve_square in chess.scan_forward(eves):
  269.             if self.eve_attacks(eve_square) & chess.BB_SQUARES[square]:
  270.                 attackers |= chess.BB_SQUARES[eve_square]
  271.  
  272.         return attackers
  273.  
  274.     def push(self, move):
  275.         if not self.is_legal(move):
  276.             raise ValueError(f"Move {move} is not legal in position {self.fen()}")
  277.  
  278.         piece = self.piece_at(move.from_square)
  279.         captured_piece = self.piece_at(move.to_square)
  280.  
  281.         self.clear_square(move.from_square)
  282.         self.clear_square(move.to_square)
  283.         self._set_piece_at(move.to_square, piece.piece_type, piece.color)
  284.  
  285.         self.turn = not self.turn
  286.  
  287.         self.move_stack.append((move, captured_piece))
  288.  
  289.     def pop(self):
  290.         if not self.move_stack:
  291.             return None
  292.  
  293.         move, captured_piece = self.move_stack.pop()
  294.  
  295.         piece = self.piece_at(move.to_square)
  296.        
  297.         self.clear_square(move.from_square)
  298.         self.clear_square(move.to_square)
  299.  
  300.         self._set_piece_at(move.from_square, piece.piece_type, piece.color)
  301.  
  302.         if captured_piece:
  303.             self._set_piece_at(move.to_square, captured_piece.piece_type, captured_piece.color)
  304.  
  305.         self.turn = not self.turn
  306.  
  307.         return move
  308.  
  309.     def is_check(self):
  310.         king_square = self.king(self.turn)
  311.         if king_square is None:
  312.             return False
  313.         return self._is_attacked_by(not self.turn, king_square)[0]
  314.  
  315.     def is_checkmate(self):
  316.         if not self.is_check():
  317.             return False
  318.         return not any(self.generate_legal_moves())
  319.  
  320.     def is_stalemate(self):
  321.         if self.is_check():
  322.             return False
  323.         return not any(self.generate_legal_moves())
  324.    
  325.     def is_insufficient_material(self):
  326.             return (self.pawns | self.rooks | self.queens | self.amazons_white | self.amazons_black |
  327.                     self.cyrils_white | self.cyrils_black | self.eves_white | self.eves_black) == 0 and (
  328.                 chess.popcount(self.occupied) <= 3
  329.             )
  330.  
  331.     def is_game_over(self):
  332.         return self.is_checkmate() or self.is_stalemate() or self.is_insufficient_material()
  333.  
  334.     def debug_amazons(self):
  335.         print(f"Bitboard bílých amazonek: {format(self.amazons_white, '064b')}")
  336.         print(f"Bitboard černých amazonek: {format(self.amazons_black, '064b')}")
  337.         for square in chess.SQUARES:
  338.             if self.amazons_white & chess.BB_SQUARES[square]:
  339.                 print(f"Bílá amazonka na {chess.SQUARE_NAMES[square]}")
  340.             if self.amazons_black & chess.BB_SQUARES[square]:
  341.                 print(f"Černá amazonka na {chess.SQUARE_NAMES[square]}")
  342.  
  343.     def debug_cyrils(self):
  344.         print(f"Bitboard bílých Cyrils: {format(self.cyrils_white, '064b')}")
  345.         print(f"Bitboard černých Cyrils: {format(self.cyrils_black, '064b')}")
  346.         for square in chess.SQUARES:
  347.             if self.cyrils_white & chess.BB_SQUARES[square]:
  348.                 print(f"Bílý Cyril na {chess.SQUARE_NAMES[square]}")
  349.             if self.cyrils_black & chess.BB_SQUARES[square]:
  350.                 print(f"Černý Cyril na {chess.SQUARE_NAMES[square]}")
  351.  
  352.     def debug_eves(self):
  353.         print(f"Bitboard bílých Eves: {format(self.eves_white, '064b')}")
  354.         print(f"Bitboard černých Eves: {format(self.eves_black, '064b')}")
  355.         for square in chess.SQUARES:
  356.             if self.eves_white & chess.BB_SQUARES[square]:
  357.                 print(f"Bílá Eve na {chess.SQUARE_NAMES[square]}")
  358.             if self.eves_black & chess.BB_SQUARES[square]:
  359.                 print(f"Černá Eve na {chess.SQUARE_NAMES[square]}")
  360.  
  361.     def piece_symbol(self, piece):
  362.         if piece is None:
  363.             return '.'
  364.         if piece.piece_type == AMAZON:
  365.             return 'A' if piece.color == chess.WHITE else 'a'
  366.         if piece.piece_type == CYRIL:
  367.             return 'C' if piece.color == chess.WHITE else 'c'
  368.         if piece.piece_type == EVE:
  369.             return 'E' if piece.color == chess.WHITE else 'e'
  370.         return piece.symbol()
  371.  
  372.     def piece_type_at(self, square):
  373.         if (self.amazons_white | self.amazons_black) & chess.BB_SQUARES[square]:
  374.             return AMAZON
  375.         if (self.cyrils_white | self.cyrils_black) & chess.BB_SQUARES[square]:
  376.             return CYRIL
  377.         if (self.eves_white | self.eves_black) & chess.BB_SQUARES[square]:
  378.             return EVE
  379.         return super().piece_type_at(square)
  380.  
  381.     def color_at(self, square):
  382.         if self.amazons_white & chess.BB_SQUARES[square]:
  383.             return chess.WHITE
  384.         if self.amazons_black & chess.BB_SQUARES[square]:
  385.             return chess.BLACK
  386.         if self.cyrils_white & chess.BB_SQUARES[square]:
  387.             return chess.WHITE
  388.         if self.cyrils_black & chess.BB_SQUARES[square]:
  389.             return chess.BLACK
  390.         if self.eves_white & chess.BB_SQUARES[square]:
  391.             return chess.WHITE
  392.         if self.eves_black & chess.BB_SQUARES[square]:
  393.             return chess.BLACK
  394.         return super().color_at(square)
  395.  
  396.     @property
  397.     def legal_moves(self):
  398.         return [move for move in self.generate_pseudo_legal_moves() if self.is_legal(move)]
  399.  
  400.     def __str__(self):
  401.         builder = []
  402.         for square in chess.SQUARES_180:
  403.             piece = self.piece_at(square)
  404.             symbol = self.piece_symbol(piece) if piece else '.'
  405.             builder.append(symbol)
  406.             if chess.square_file(square) == 7:
  407.                 if square != chess.H1:
  408.                     builder.append('\n')
  409.         return ''.join(builder)
  410.  
  411.     def simplify_fen_string(fen):
  412.         parts = fen.split(' ')
  413.         return ' '.join(parts[:4])  # Zachováváme pouze informace o pozici, barvě na tahu, rošádách a en passant
  414.    
  415.     def format_time(seconds):
  416.         hours, remainder = divmod(seconds, 3600)
  417.         minutes, seconds = divmod(remainder, 60)
  418.         return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"
  419.    
  420.     def print_elapsed_time(stop_event):
  421.         start_time = time.time()
  422.         while not stop_event.is_set():
  423.             elapsed_time = time.time() - start_time
  424.             formatted_time = time.strftime("%H:%M:%S", time.gmtime(elapsed_time))
  425.             print(f"Uplynulý čas: {formatted_time}", end='\r')
  426.             time.sleep(1)
  427.    
  428.     def calculate_optimal_moves(start_fen: str) -> Dict[str, int]:
  429.         board = CustomBoard(start_fen)
  430.         AR = {simplify_fen_string(start_fen): 0}
  431.         queue = deque([(simplify_fen_string(start_fen), 0)])
  432.         visited = set()
  433.    
  434.         start_time = time.time()
  435.         current_level = 0
  436.         pozice_na_urovni = 0
  437.         level_start_time = start_time
  438.    
  439.         stop_event = threading.Event()
  440.         timer_thread = threading.Thread(target=print_elapsed_time, args=(stop_event,))
  441.         timer_thread.start()
  442.    
  443.         try:
  444.             while queue:
  445.                 fen, hloubka = queue.popleft()
  446.    
  447.                 if hloubka > current_level:
  448.                     level_time = time.time() - level_start_time
  449.                     print(f"\nHloubka {current_level}: {pozice_na_urovni} pozic, Čas: {format_time(level_time)}")
  450.                     current_level = hloubka
  451.                     pozice_na_urovni = 0
  452.                     level_start_time = time.time()
  453.    
  454.                 if fen in visited:
  455.                     continue
  456.    
  457.                 visited.add(fen)
  458.                 pozice_na_urovni += 1
  459.                 board.set_custom_fen(fen)
  460.    
  461.                 if board.is_checkmate():
  462.                     AR[fen] = -1000 + hloubka if board.turn == chess.WHITE else 1000 - hloubka
  463.                     continue
  464.                 elif board.is_stalemate() or board.is_insufficient_material():
  465.                     AR[fen] = 0
  466.                     continue
  467.    
  468.                 legal_moves = list(board.legal_moves)
  469.    
  470.                 for move in legal_moves:
  471.                     board.push(move)
  472.                     new_fen = simplify_fen_string(board.fen())
  473.                     if new_fen not in AR:
  474.                         AR[new_fen] = 0
  475.                         queue.append((new_fen, hloubka + 1))
  476.                     board.pop()
  477.    
  478.             level_time = time.time() - level_start_time
  479.             print(f"\nHloubka {current_level}: {pozice_na_urovni} pozic, Čas: {format_time(level_time)}")
  480.    
  481.             # Procházení a aktualizace hodnot
  482.             changed = True
  483.             while changed:
  484.                 changed = False
  485.                 for fen in AR:
  486.                     board.set_custom_fen(fen)
  487.                     if board.is_game_over():
  488.                         continue
  489.    
  490.                     legal_moves = list(board.legal_moves)
  491.                     if board.turn == chess.WHITE:
  492.                         best_value = max(AR[simplify_fen_string(board.fen())] for _ in [board.push(move), board.pop()] for move in legal_moves)
  493.                         if best_value > AR[fen]:
  494.                             AR[fen] = best_value
  495.                             changed = True
  496.                     else:
  497.                         best_value = min(AR[simplify_fen_string(board.fen())] for _ in [board.push(move), board.pop()] for move in legal_moves)
  498.                         if best_value < AR[fen]:
  499.                             AR[fen] = best_value
  500.                             changed = True
  501.    
  502.             celkovy_cas = time.time() - start_time
  503.             print(f"\nVýpočet dokončen za {format_time(celkovy_cas)}")
  504.    
  505.         finally:
  506.             stop_event.set()
  507.             timer_thread.join()
  508.    
  509.         return AR
  510.  
  511. if __name__ == "__main__":
  512.     start_fen = "8/3k4/8/8/8/8/A7/6K1 w - - 0 1"
  513.     AR = calculate_optimal_moves(start_fen)
  514.  
  515.     # Výpis výsledků
  516.     for fen, hodnota in AR.items():
  517.         print(f"FEN: {fen}")
  518.         print(f"Hodnota: {hodnota}")
  519.         print()
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