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bez neohodnocenych pozic!! LAST ONE

max2201111
Jul 15th, 2024
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  1. # Import knihovny chess a dalších potřebných modulů
  2. import chess
  3. from typing import Iterator, Optional, Dict, Tuple
  4. from chess import Move, BB_ALL, Bitboard, PieceType, Color
  5. import time
  6. from collections import deque
  7. import threading
  8.  
  9. # Definice nových figur
  10. AMAZON = 7
  11. CYRIL = 8
  12. EVE = 9
  13.  
  14. # Rozšíření seznamu PIECE_SYMBOLS
  15. chess.PIECE_SYMBOLS.append('a')
  16. chess.PIECE_SYMBOLS.append('c')
  17. chess.PIECE_SYMBOLS.append('e')
  18.  
  19. class CustomBoard(chess.Board):
  20.     def __init__(self, fen=None):
  21.         self.amazons_white = chess.BB_EMPTY
  22.         self.amazons_black = chess.BB_EMPTY
  23.         self.cyrils_white = chess.BB_EMPTY
  24.         self.cyrils_black = chess.BB_EMPTY
  25.         self.eves_white = chess.BB_EMPTY
  26.         self.eves_black = chess.BB_EMPTY
  27.         super().__init__(None)
  28.         if fen:
  29.             self.set_custom_fen(fen)
  30.     #    print("Šachovnice inicializována")
  31.         self.debug_amazons()
  32.         self.debug_cyrils()
  33.         self.debug_eves()
  34.  
  35.     def clear_square(self, square):
  36.         super()._remove_piece_at(square)
  37.         self.amazons_white &= ~chess.BB_SQUARES[square]
  38.         self.amazons_black &= ~chess.BB_SQUARES[square]
  39.         self.cyrils_white &= ~chess.BB_SQUARES[square]
  40.         self.cyrils_black &= ~chess.BB_SQUARES[square]
  41.         self.eves_white &= ~chess.BB_SQUARES[square]
  42.         self.eves_black &= ~chess.BB_SQUARES[square]
  43.  
  44.     def set_custom_fen(self, fen):
  45.         parts = fen.split()
  46.         board_part = parts[0]
  47.  
  48.         self.clear()
  49.         self.amazons_white = chess.BB_EMPTY
  50.         self.amazons_black = chess.BB_EMPTY
  51.         self.cyrils_white = chess.BB_EMPTY
  52.         self.cyrils_black = chess.BB_EMPTY
  53.         self.eves_white = chess.BB_EMPTY
  54.         self.eves_black = chess.BB_EMPTY
  55.  
  56.         square = 56
  57.         for c in board_part:
  58.             if c == '/':
  59.                 square -= 16
  60.             elif c.isdigit():
  61.                 square += int(c)
  62.             else:
  63.                 color = chess.WHITE if c.isupper() else chess.BLACK
  64.                 if c.upper() == 'A':
  65.                     if color == chess.WHITE:
  66.                         self.amazons_white |= chess.BB_SQUARES[square]
  67.                     else:
  68.                         self.amazons_black |= chess.BB_SQUARES[square]
  69.                     piece_type = AMAZON
  70.                 elif c.upper() == 'C':
  71.                     if color == chess.WHITE:
  72.                         self.cyrils_white |= chess.BB_SQUARES[square]
  73.                     else:
  74.                         self.cyrils_black |= chess.BB_SQUARES[square]
  75.                     piece_type = CYRIL
  76.                 elif c.upper() == 'E':
  77.                     if color == chess.WHITE:
  78.                         self.eves_white |= chess.BB_SQUARES[square]
  79.                     else:
  80.                         self.eves_black |= chess.BB_SQUARES[square]
  81.                     piece_type = EVE
  82.                 else:
  83.                     piece_type = chess.PIECE_SYMBOLS.index(c.lower())
  84.                 self._set_piece_at(square, piece_type, color)
  85.                 square += 1
  86.  
  87.         self.turn = chess.WHITE if parts[1] == 'w' else chess.BLACK
  88.         self.castling_rights = chess.BB_EMPTY
  89.         if '-' not in parts[2]:
  90.             if 'K' in parts[2]: self.castling_rights |= chess.BB_H1
  91.             if 'Q' in parts[2]: self.castling_rights |= chess.BB_A1
  92.             if 'k' in parts[2]: self.castling_rights |= chess.BB_H8
  93.             if 'q' in parts[2]: self.castling_rights |= chess.BB_A8
  94.         self.ep_square = chess.parse_square(parts[3]) if parts[3] != '-' else None
  95.  
  96.     def _set_piece_at(self, square: chess.Square, piece_type: PieceType, color: Color) -> None:
  97.         self.clear_square(square)
  98.         super()._set_piece_at(square, piece_type, color)
  99.         if piece_type == AMAZON:
  100.             if color == chess.WHITE:
  101.                 self.amazons_white |= chess.BB_SQUARES[square]
  102.             else:
  103.                 self.amazons_black |= chess.BB_SQUARES[square]
  104.         elif piece_type == CYRIL:
  105.             if color == chess.WHITE:
  106.                 self.cyrils_white |= chess.BB_SQUARES[square]
  107.             else:
  108.                 self.cyrils_black |= chess.BB_SQUARES[square]
  109.         elif piece_type == EVE:
  110.             if color == chess.WHITE:
  111.                 self.eves_white |= chess.BB_SQUARES[square]
  112.             else:
  113.                 self.eves_black |= chess.BB_SQUARES[square]
  114.  
  115.     def piece_at(self, square: chess.Square) -> Optional[chess.Piece]:
  116.         if self.amazons_white & chess.BB_SQUARES[square]:
  117.             return chess.Piece(AMAZON, chess.WHITE)
  118.         elif self.amazons_black & chess.BB_SQUARES[square]:
  119.             return chess.Piece(AMAZON, chess.BLACK)
  120.         elif self.cyrils_white & chess.BB_SQUARES[square]:
  121.             return chess.Piece(CYRIL, chess.WHITE)
  122.         elif self.cyrils_black & chess.BB_SQUARES[square]:
  123.             return chess.Piece(CYRIL, chess.BLACK)
  124.         elif self.eves_white & chess.BB_SQUARES[square]:
  125.             return chess.Piece(EVE, chess.WHITE)
  126.         elif self.eves_black & chess.BB_SQUARES[square]:
  127.             return chess.Piece(EVE, chess.BLACK)
  128.         return super().piece_at(square)
  129.  
  130.     def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboard = BB_ALL) -> Iterator[Move]:
  131.         our_pieces = self.occupied_co[self.turn]
  132.         if self.turn == chess.WHITE:
  133.             our_amazons = self.amazons_white
  134.             our_cyrils = self.cyrils_white
  135.             our_eves = self.eves_white
  136.         else:
  137.             our_amazons = self.amazons_black
  138.             our_cyrils = self.cyrils_black
  139.             our_eves = self.eves_black
  140.    
  141.         # Generování tahů pro amazonky
  142.         for from_square in chess.scan_forward(our_amazons & from_mask):
  143.             attacks = self.amazon_attacks(from_square)
  144.             valid_moves = attacks & ~our_pieces & to_mask
  145.             for to_square in chess.scan_forward(valid_moves):
  146.                 yield Move(from_square, to_square)
  147.    
  148.         # Generování tahů pro Cyrily
  149.         for from_square in chess.scan_forward(our_cyrils & from_mask):
  150.             attacks = self.cyril_attacks(from_square)
  151.             valid_moves = attacks & ~our_pieces & to_mask
  152.             for to_square in chess.scan_forward(valid_moves):
  153.                 yield Move(from_square, to_square)
  154.    
  155.         # Generování tahů pro Evy
  156.         for from_square in chess.scan_forward(our_eves & from_mask):
  157.             attacks = self.eve_attacks(from_square)
  158.             valid_moves = attacks & ~our_pieces & to_mask
  159.             for to_square in chess.scan_forward(valid_moves):
  160.                 yield Move(from_square, to_square)
  161.    
  162.         # Generování tahů pro standardní figury
  163.         for move in super().generate_pseudo_legal_moves(from_mask, to_mask):
  164.             piece = self.piece_at(move.from_square)
  165.             if piece and piece.piece_type not in [AMAZON, CYRIL, EVE]:
  166.                 yield move
  167.  
  168.     def queen_attacks(self, square):
  169.         return self.bishop_attacks(square) | self.rook_attacks(square)
  170.  
  171.     def bishop_attacks(self, square):
  172.         return chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]]
  173.  
  174.     def rook_attacks(self, square):
  175.         return (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
  176.                 chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]])
  177.  
  178.     def amazon_attacks(self, square):
  179.         return self.queen_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]
  180.  
  181.     def cyril_attacks(self, square):
  182.         return self.rook_attacks(square) | chess.BB_KNIGHT_ATTACKS(square)
  183.  
  184.     def eve_attacks(self, square):
  185.         return self.bishop_attacks(square) | chess.BB_KNIGHT_ATTACKS(square)
  186.  
  187.     def is_pseudo_legal(self, move):
  188.         from_square = move.from_square
  189.         to_square = move.to_square
  190.         piece = self.piece_at(from_square)
  191.    
  192.         if not piece or piece.color != self.turn:
  193.             return False
  194.    
  195.         if self.occupied_co[self.turn] & chess.BB_SQUARES[to_square]:
  196.             return False
  197.    
  198.         if self.is_castling(move):
  199.             return True
  200.    
  201.         if piece.piece_type == AMAZON:
  202.             return bool(self.amazon_attacks(from_square) & chess.BB_SQUARES[to_square])
  203.         elif piece.piece_type == CYRIL:
  204.             return bool(self.cyril_attacks(from_square) & chess.BB_SQUARES[to_square])
  205.         elif piece.piece_type == EVE:
  206.             return bool(self.eve_attacks(from_square) & chess.BB_SQUARES[to_square])
  207.         else:
  208.             return super().is_pseudo_legal(move)
  209.  
  210.     def is_legal(self, move):
  211.         if not self.is_pseudo_legal(move):
  212.             return False
  213.  
  214.         from_square = move.from_square
  215.         to_square = move.to_square
  216.         piece = self.piece_at(from_square)
  217.         captured_piece = self.piece_at(to_square)
  218.  
  219.         self.clear_square(from_square)
  220.         self.clear_square(to_square)
  221.         self._set_piece_at(to_square, piece.piece_type, piece.color)
  222.  
  223.         king_square = to_square if piece.piece_type == chess.KING else self.king(self.turn)
  224.         is_check = self._is_attacked_by(not self.turn, king_square)
  225.  
  226.         self.clear_square(to_square)
  227.         self._set_piece_at(from_square, piece.piece_type, piece.color)
  228.         if captured_piece:
  229.             self._set_piece_at(to_square, captured_piece.piece_type, captured_piece.color)
  230.  
  231.         if is_check:
  232.             attackers = self.attackers(not self.turn, king_square)
  233.     #        print(f"[DEBUG] King at {chess.SQUARE_NAMES[king_square]} is attacked by pieces at: {[chess.SQUARE_NAMES[sq] for sq in chess.scan_forward(attackers)]}")
  234.  
  235.         return not is_check
  236.  
  237.     def _is_attacked_by(self, color, square):
  238.         attackers = self.attackers(color, square)
  239.         return bool(attackers)
  240.  
  241.     def attackers(self, color, square):
  242.         attackers = chess.BB_EMPTY
  243.  
  244.         knights = self.knights & self.occupied_co[color]
  245.         attackers |= knights & chess.BB_KNIGHT_ATTACKS[square]
  246.  
  247.         king = self.kings & self.occupied_co[color]
  248.         attackers |= king & chess.BB_KING_ATTACKS[square]
  249.  
  250.         pawns = self.pawns & self.occupied_co[color]
  251.         if color == chess.WHITE:
  252.             attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.BLACK][square]
  253.         else:
  254.             attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.WHITE][square]
  255.  
  256.         queens = self.queens & self.occupied_co[color]
  257.         bishops = (self.bishops | queens) & self.occupied_co[color]
  258.         rooks = (self.rooks | queens) & self.occupied_co[color]
  259.  
  260.         attackers |= chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]] & bishops
  261.         attackers |= (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
  262.                       chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]]) & rooks
  263.  
  264.         amazons = self.amazons_white if color == chess.WHITE else self.amazons_black
  265.         for amazon_square in chess.scan_forward(amazons):
  266.             if self.amazon_attacks(amazon_square) & chess.BB_SQUARES[square]:
  267.                 attackers |= chess.BB_SQUARES[amazon_square]
  268.  
  269.         cyrils = self.cyrils_white if color == chess.WHITE else self.cyrils_black
  270.         for cyril_square in chess.scan_forward(cyrils):
  271.             if self.cyril_attacks(cyril_square) & chess.BB_SQUARES[square]:
  272.                 attackers |= chess.BB_SQUARES[cyril_square]
  273.  
  274.         eves = self.eves_white if color == chess.WHITE else self.eves_black
  275.         for eve_square in chess.scan_forward(eves):
  276.             if self.eve_attacks(eve_square) & chess.BB_SQUARES[square]:
  277.                 attackers |= chess.BB_SQUARES[eve_square]
  278.  
  279.         return attackers
  280.  
  281.     def push(self, move):
  282.         if not self.is_legal(move):
  283.             raise ValueError(f"Move {move} is not legal in position {self.fen()}")
  284.  
  285.         piece = self.piece_at(move.from_square)
  286.         captured_piece = self.piece_at(move.to_square)
  287.  
  288.         self.clear_square(move.from_square)
  289.         self.clear_square(move.to_square)
  290.         self._set_piece_at(move.to_square, piece.piece_type, piece.color)
  291.  
  292.         self.turn = not self.turn
  293.  
  294.         self.move_stack.append((move, captured_piece))
  295.  
  296.     def pop(self):
  297.         if not self.move_stack:
  298.             return None
  299.  
  300.         move, captured_piece = self.move_stack.pop()
  301.  
  302.         piece = self.piece_at(move.to_square)
  303.        
  304.         self.clear_square(move.from_square)
  305.         self.clear_square(move.to_square)
  306.  
  307.         self._set_piece_at(move.from_square, piece.piece_type, piece.color)
  308.  
  309.         if captured_piece:
  310.             self._set_piece_at(move.to_square, captured_piece.piece_type, captured_piece.color)
  311.  
  312.         self.turn = not self.turn
  313.  
  314.         return move
  315.  
  316.     def is_check(self):
  317.         king_square = self.king(self.turn)
  318.         if king_square is None:
  319.             return False
  320.         is_check = self._is_attacked_by(not self.turn, king_square)
  321.   #      print(f"[DEBUG] Checking if position is check: FEN: {self.fen()}, King at {chess.SQUARE_NAMES[king_square]}, is_check: {is_check}")
  322.         return is_check
  323.  
  324.     def is_checkmate(self):
  325.         if not self.is_check():
  326.   #          print(f"[DEBUG] Position is not check, hence not checkmate: FEN: {self.fen()}")
  327.             return False
  328.         legal_moves = list(self.generate_legal_moves())
  329.  #       print(f"[DEBUG] Checking if position is checkmate: FEN: {self.fen()}, Legal moves: {legal_moves}")
  330.         return len(legal_moves) == 0
  331.  
  332.     def is_game_over(self):
  333.         return self.is_checkmate() or self.is_stalemate() or self.is_insufficient_material()
  334.  
  335.     def is_stalemate(self):
  336.         if self.is_check():
  337.             return False
  338.         legal_moves = list(self.generate_legal_moves())
  339.   #      print(f"[DEBUG] Checking if position is stalemate: FEN: {self.fen()}, Legal moves: {legal_moves}")
  340.         return len(legal_moves) == 0
  341.    
  342.     def is_insufficient_material(self):
  343.         return (self.pawns | self.rooks | self.queens | self.amazons_white | self.amazons_black |
  344.                 self.cyrils_white | self.cyrils_black | self.eves_white | self.eves_black) == 0 and (
  345.             chess.popcount(self.occupied) <= 3
  346.         )
  347.  
  348.     def generate_legal_moves(self, from_mask=chess.BB_ALL, to_mask=chess.BB_ALL):
  349.         for move in self.generate_pseudo_legal_moves(from_mask, to_mask):
  350.             if self.is_legal(move):
  351.       #          print(f"[DEBUG] Legal move: {move}")
  352.                 yield move
  353.        #     else:
  354.         #        print(f"[DEBUG] Illegal move: {move}")
  355.  
  356.     def debug_amazons(self):
  357.         pass
  358.       #  print(f"Bitboard bílých amazonek: {format(self.amazons_white, '064b')}")
  359.     #   print(f"Bitboard černých amazonek: {format(self.amazons_black, '064b')}")
  360.         for square in chess.SQUARES:
  361.             pass
  362.        #     if self.amazons_white & chess.BB_SQUARES[square]:
  363.        #         print(f"Bílá amazonka na {chess.SQUARE_NAMES[square]}")
  364.      #       if self.amazons_black & chess.BB_SQUARES[square]:
  365.        #         print(f"Černá amazonka na {chess.SQUARE_NAMES[square]}")
  366.  
  367.     def debug_cyrils(self):
  368.         pass
  369.        # print(f"Bitboard bílých Cyrils: {format(self.cyrils_white, '064b')}")
  370.        # print(f"Bitboard černých Cyrils: {format(self.cyrils_black, '064b')}")
  371.        # for square in chess.SQUARES:
  372.        #     if self.cyrils_white & chess.BB_SQUARES[square]:
  373.       #          print(f"Bílý Cyril na {chess.SQUARE_NAMES[square]}")
  374.      #       if self.cyrils_black & chess.BB_SQUARES[square]:
  375.     #            print(f"Černý Cyril na {chess.SQUARE_NAMES[square]}")
  376.  
  377.     def debug_eves(self):
  378.         pass
  379.     #    print(f"Bitboard bílých Eves: {format(self.eves_white, '064b')}")
  380.      #   print(f"Bitboard černých Eves: {format(self.eves_black, '064b')}")
  381.       #  for square in chess.SQUARES:
  382.       #      if self.eves_white & chess.BB_SQUARES[square]:
  383.           #      print(f"Bílá Eve na {chess.SQUARE_NAMES[square]}")
  384.        #     if self.eves_black & chess.BB_SQUARES[square]:
  385.        #         print(f"Černá Eve na {chess.SQUARE_NAMES[square]}")
  386.  
  387.     def piece_symbol(self, piece):
  388.         if piece is None:
  389.             return '.'
  390.         if piece.piece_type == AMAZON:
  391.             return 'A' if piece.color == chess.WHITE else 'a'
  392.         if piece.piece_type == CYRIL:
  393.             return 'C' if piece.color == chess.WHITE else 'c'
  394.         if piece.piece_type == EVE:
  395.             return 'E' if piece.color == chess.WHITE else 'e'
  396.         return piece.symbol()
  397.  
  398.     def piece_type_at(self, square):
  399.         if (self.amazons_white | self.amazons_black) & chess.BB_SQUARES[square]:
  400.             return AMAZON
  401.         if (self.cyrils_white | self.cyrils_black) & chess.BB_SQUARES[square]:
  402.             return CYRIL
  403.         if (self.eves_white | self.eves_black) & chess.BB_SQUARES[square]:
  404.             return EVE
  405.         return super().piece_type_at(square)
  406.  
  407.     def color_at(self, square):
  408.         if self.amazons_white & chess.BB_SQUARES[square]:
  409.             return chess.WHITE
  410.         if self.amazons_black & chess.BB_SQUARES[square]:
  411.             return chess.BLACK
  412.         if self.cyrils_white & chess.BB_SQUARES[square]:
  413.             return chess.WHITE
  414.         if self.cyrils_black & chess.BB_SQUARES[square]:
  415.             return chess.BLACK
  416.         if self.eves_white & chess.BB_SQUARES[square]:
  417.             return chess.WHITE
  418.         if self.eves_black & chess.BB_SQUARES[square]:
  419.             return chess.BLACK
  420.         return super().color_at(square)
  421.  
  422.     @property
  423.     def legal_moves(self):
  424.         return list(self.generate_legal_moves())
  425.  
  426.     def __str__(self):
  427.         builder = []
  428.         for square in chess.SQUARES_180:
  429.             piece = self.piece_at(square)
  430.             symbol = self.piece_symbol(piece) if piece else '.'
  431.             builder.append(symbol)
  432.             if chess.square_file(square) == 7:
  433.                 if square != chess.H1:
  434.                     builder.append('\n')
  435.         return ''.join(builder)
  436.  
  437.     def print_all_possible_moves(self):
  438.         pass
  439.     #    print(f"[DEBUG] All possible moves for FEN: {self.fen()}")
  440.   #      for move in self.generate_pseudo_legal_moves():
  441.    #         print(f"Move: {move}, Is legal: {self.is_legal(move)}")
  442.  
  443. def simplify_fen_string(fen):
  444.     parts = fen.split(' ')
  445.     return ' '.join(parts[:4])  # Zachováváme pouze informace o pozici, barvě na tahu, rošádách a en passant
  446.  
  447. def format_time(seconds):
  448.     hours, remainder = divmod(seconds, 3600)
  449.     minutes, seconds = divmod(remainder, 60)
  450.     return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"
  451.  
  452. def print_elapsed_time(stop_event, start_time):
  453.     while not stop_event.is_set():
  454.         elapsed_time = time.time() - start_time
  455.         print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
  456.         time.sleep(1)
  457.  
  458. def format_time(seconds):
  459.     hours, remainder = divmod(seconds, 3600)
  460.     minutes, seconds = divmod(remainder, 60)
  461.     return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"
  462.  
  463. def print_elapsed_time(stop_event, start_time):
  464.     while not stop_event.is_set():
  465.         elapsed_time = time.time() - start_time
  466.         print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
  467.         time.sleep(1)
  468.  
  469. def simplify_fen(fen):
  470.     return ' '.join(fen.split()[:4])
  471.  
  472.  
  473. def calculate_optimal_moves(start_fen: str) -> Dict[str, Tuple[int, str]]:
  474.     print("Funkce calculate_optimal_moves byla zavolána")
  475.     print(f"Počáteční FEN: {start_fen}")
  476.    
  477.     board = CustomBoard(start_fen)
  478.     initial_to_end = 1000 if board.turn == chess.WHITE else -1000
  479.     POZ = {1: simplify_fen_string(start_fen)}
  480.     AR = {simplify_fen_string(start_fen): {'used': 0, 'to_end': initial_to_end, 'depth': 0, 'type': 'normal'}}
  481.     N = 1
  482.     M = 0
  483.  
  484.     start_time = time.time()
  485.     current_depth = 0
  486.     positions_at_depth = 0
  487.     depth_start_time = start_time
  488.     max_iterations = 1000  # Maximum number of iterations to prevent infinite loops
  489.  
  490.     stop_event = threading.Event()
  491.     timer_thread = threading.Thread(target=print_elapsed_time, args=(stop_event, start_time))
  492.     timer_thread.start()
  493.  
  494.     try:
  495.         print("Začínám generovat pozice...")
  496.        
  497.         # Generate all positions
  498.         while M < N:
  499.             M += 1
  500.             current_fen = POZ[M]
  501.             board.set_custom_fen(current_fen)
  502.             simplified_current_fen = simplify_fen_string(current_fen)
  503.             current_to_end = -1000 if board.turn == chess.WHITE else 1000
  504.  
  505.             if AR[simplified_current_fen]['depth'] > current_depth:
  506.                 depth_time = time.time() - depth_start_time
  507.                 print(f"\nHloubka {current_depth}: {positions_at_depth} pozic, Čas hloubky: {format_time(depth_time)}")
  508.                 current_depth = AR[simplified_current_fen]['depth']
  509.                 positions_at_depth = 0
  510.                 depth_start_time = time.time()
  511.  
  512.             positions_at_depth += 1
  513.  
  514.             if AR[simplified_current_fen]['used'] == 0:
  515.                 AR[simplified_current_fen]['used'] = 1
  516.                 legal_moves = list(board.legal_moves)
  517.                 for move in legal_moves:
  518.                     board.push(move)
  519.                     POZ2 = board.fen()
  520.                     simplified_POZ2 = simplify_fen_string(POZ2)
  521.  
  522.                     if simplified_POZ2 not in AR:
  523.                         N += 1
  524.                         POZ[N] = simplified_POZ2
  525.                         AR[simplified_POZ2] = {'used': 0, 'to_end': current_to_end, 'depth': AR[simplified_current_fen]['depth'] + 1, 'type': 'normal'}
  526.  
  527.                     board.pop()
  528.  
  529.         depth_time = time.time() - depth_start_time
  530.         print(f"\nHloubka {current_depth}: {positions_at_depth} pozic, Čas hloubky: {format_time(depth_time)}")
  531.         print(f"Generování pozic dokončeno. Celkový počet pozic: {N}")
  532.  
  533.         # Initial evaluation
  534.         print("\nZačínám počáteční ohodnocení...")
  535.         for i in range(1, N + 1):
  536.             current_fen = POZ[i]
  537.             board.set_custom_fen(current_fen)
  538.             simplified_current_fen = simplify_fen_string(current_fen)
  539.  
  540.             if board.is_checkmate():
  541.                 AR[simplified_current_fen]['to_end'] = -1000 if board.turn == chess.WHITE else 1000
  542.                 AR[simplified_current_fen]['type'] = 'mate'
  543.             elif board.is_stalemate():
  544.                 AR[simplified_current_fen]['to_end'] = 0
  545.                 AR[simplified_current_fen]['type'] = 'stalemate'
  546.             elif board.is_insufficient_material():
  547.                 AR[simplified_current_fen]['to_end'] = 0
  548.                 AR[simplified_current_fen]['type'] = 'draw'
  549.             elif board.is_check():
  550.                 AR[simplified_current_fen]['type'] = 'check'
  551.  
  552.         # Iterative evaluation
  553.         print("\nZačínám iterativní ohodnocení...")
  554.         iteration = 0
  555.         while iteration < max_iterations:
  556.             iteration += 1
  557.             changed = False
  558.             changed_positions = 0
  559.             iteration_start_time = time.time()
  560.  
  561.             for i in range(1, N + 1):
  562.                 current_fen = POZ[i]
  563.                 board.set_custom_fen(current_fen)
  564.                 simplified_current_fen = simplify_fen_string(current_fen)
  565.        
  566.                 if abs(AR[simplified_current_fen]['to_end']) == 1000:
  567.                     legal_moves = list(board.legal_moves)
  568.                     best_value = -1000 if board.turn == chess.WHITE else 1000
  569.        
  570.                     for move in legal_moves:
  571.                         board.push(move)
  572.                         POZ2 = board.fen()
  573.                         simplified_POZ2 = simplify_fen_string(POZ2)
  574.                        
  575.                         if abs(AR[simplified_POZ2]['to_end']) != 1000:
  576.                             if board.turn == chess.BLACK:  # Po tahu je na tahu černý, takže předtím byl na tahu bílý
  577.                                 best_value = max(best_value, -AR[simplified_POZ2]['to_end'] - 1)
  578.                             else:
  579.                                 best_value = min(best_value, -AR[simplified_POZ2]['to_end'] + 1)
  580.                        
  581.                         board.pop()
  582.        
  583.                     if abs(best_value) != 1000:
  584.                         AR[simplified_current_fen]['to_end'] = best_value
  585.                         changed = True
  586.                         changed_positions += 1
  587.        
  588.             iteration_time = time.time() - iteration_start_time
  589.             unevaluated = sum(1 for v in AR.values() if abs(v['to_end']) == 1000)
  590.            
  591.             print(f"\nIterace {iteration}: Změněno {changed_positions} pozic")
  592.             print(f"Čas iterace: {format_time(iteration_time)}")
  593.             print(f"Neohodnocené pozice: {unevaluated}")
  594.        
  595.             if not changed:
  596.                 break
  597.        
  598.         print("\nVýpočet dokončen.")
  599.         return {fen: (data['to_end'], data['type']) for fen, data in AR.items() if abs(data['to_end']) != 1000}
  600.  
  601.     finally:
  602.         stop_event.set()
  603.         timer_thread.join()
  604.  
  605.  
  606. # Pomocná funkce pro tisk ASCII šachovnice
  607. def print_ascii_board(fen):
  608.     board = CustomBoard(fen)
  609.     print(board)
  610.     print(f"FEN: {fen}")
  611.     simplified_fen = simplify_fen_string(fen)
  612.     print(f"Hodnota: {AR[simplified_fen]['to_end']}")
  613.     print(f"Typ: {AR[simplified_fen]['type']}")
  614.     print()
  615.  
  616. for fen, (hodnota, typ_pozice) in AR.items():
  617.     print("W",hodnota, typ_pozice,"Y")
  618.     break
  619.  
  620. if __name__ == "__main__":
  621.     start_fen = "8/3k4/8/8/8/8/A7/6K1 w - - 0 1"
  622.     AR = calculate_optimal_moves(start_fen)
  623.    
  624.     F = 0
  625.     print("\nVýsledky:")
  626.     for fen, (hodnota, typ_pozice) in AR.items():
  627.         if F < 1000 or hodnota != 0 and (hodnota == 996 or hodnota == 995):
  628.             F = F + 1
  629.             print(f"FEN: {fen}")
  630.             print(f"Hodnota: {hodnota}")
  631.             print(f"Typ pozice: {typ_pozice}")
  632.            
  633.             # Vytvoření dočasné šachovnice pro analýzu pozice
  634.             temp_board = CustomBoard(fen)
  635.            
  636.             if temp_board.is_checkmate():
  637.                 print("Stav: Mat")
  638.             elif temp_board.is_stalemate():
  639.                 print("Stav: Pat")
  640.             elif temp_board.is_insufficient_material():
  641.                 print("Stav: Nedostatečný materiál")
  642.             elif temp_board.is_check():
  643.                 print("Stav: Šach")
  644.             else:
  645.                 print("Stav: Normální pozice")
  646.            
  647.             print()
  648.  
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