last bez #

import chess
from typing import Iterator, Optional, Dict, Tuple
from chess import Move, BB_ALL, Bitboard, PieceType, Color
import time
from collections import deque
import threading

# Definice nových figur
AMAZON = 7
CYRIL = 8
EVE = 9

# Rozšíření seznamu PIECE_SYMBOLS
chess.PIECE_SYMBOLS.append('a')
chess.PIECE_SYMBOLS.append('c')
chess.PIECE_SYMBOLS.append('e')

class CustomBoard(chess.Board):
    def __init__(self, fen=None):
        self.amazons_white = chess.BB_EMPTY
        self.amazons_black = chess.BB_EMPTY
        self.cyrils_white = chess.BB_EMPTY
        self.cyrils_black = chess.BB_EMPTY
        self.eves_white = chess.BB_EMPTY
        self.eves_black = chess.BB_EMPTY
        super().__init__(None)
        if fen:
            self.set_custom_fen(fen)
    #    print("Šachovnice inicializována")
        self.debug_amazons()
        self.debug_cyrils()
        self.debug_eves()

    def clear_square(self, square):
        super()._remove_piece_at(square)
        self.amazons_white &= ~chess.BB_SQUARES[square]
        self.amazons_black &= ~chess.BB_SQUARES[square]
        self.cyrils_white &= ~chess.BB_SQUARES[square]
        self.cyrils_black &= ~chess.BB_SQUARES[square]
        self.eves_white &= ~chess.BB_SQUARES[square]
        self.eves_black &= ~chess.BB_SQUARES[square]

    def set_custom_fen(self, fen):
        parts = fen.split()
        board_part = parts[0]

        self.clear()
        self.amazons_white = chess.BB_EMPTY
        self.amazons_black = chess.BB_EMPTY
        self.cyrils_white = chess.BB_EMPTY
        self.cyrils_black = chess.BB_EMPTY
        self.eves_white = chess.BB_EMPTY
        self.eves_black = chess.BB_EMPTY

        square = 56
        for c in board_part:
            if c == '/':
                square -= 16
            elif c.isdigit():
                square += int(c)
            else:
                color = chess.WHITE if c.isupper() else chess.BLACK
                if c.upper() == 'A':
                    if color == chess.WHITE:
                        self.amazons_white |= chess.BB_SQUARES[square]
                    else:
                        self.amazons_black |= chess.BB_SQUARES[square]
                    piece_type = AMAZON
                elif c.upper() == 'C':
                    if color == chess.WHITE:
                        self.cyrils_white |= chess.BB_SQUARES[square]
                    else:
                        self.cyrils_black |= chess.BB_SQUARES[square]
                    piece_type = CYRIL
                elif c.upper() == 'E':
                    if color == chess.WHITE:
                        self.eves_white |= chess.BB_SQUARES[square]
                    else:
                        self.eves_black |= chess.BB_SQUARES[square]
                    piece_type = EVE
                else:
                    piece_type = chess.PIECE_SYMBOLS.index(c.lower())
                self._set_piece_at(square, piece_type, color)
                square += 1

        self.turn = chess.WHITE if parts[1] == 'w' else chess.BLACK
        self.castling_rights = chess.BB_EMPTY
        if '-' not in parts[2]:
            if 'K' in parts[2]: self.castling_rights |= chess.BB_H1
            if 'Q' in parts[2]: self.castling_rights |= chess.BB_A1
            if 'k' in parts[2]: self.castling_rights |= chess.BB_H8
            if 'q' in parts[2]: self.castling_rights |= chess.BB_A8
        self.ep_square = chess.parse_square(parts[3]) if parts[3] != '-' else None

    def _set_piece_at(self, square: chess.Square, piece_type: PieceType, color: Color) -> None:
        self.clear_square(square)
        super()._set_piece_at(square, piece_type, color)
        if piece_type == AMAZON:
            if color == chess.WHITE:
                self.amazons_white |= chess.BB_SQUARES[square]
            else:
                self.amazons_black |= chess.BB_SQUARES[square]
        elif piece_type == CYRIL:
            if color == chess.WHITE:
                self.cyrils_white |= chess.BB_SQUARES[square]
            else:
                self.cyrils_black |= chess.BB_SQUARES[square]
        elif piece_type == EVE:
            if color == chess.WHITE:
                self.eves_white |= chess.BB_SQUARES[square]
            else:
                self.eves_black |= chess.BB_SQUARES[square]

    def piece_at(self, square: chess.Square) -> Optional[chess.Piece]:
        if self.amazons_white & chess.BB_SQUARES[square]:
            return chess.Piece(AMAZON, chess.WHITE)
        elif self.amazons_black & chess.BB_SQUARES[square]:
            return chess.Piece(AMAZON, chess.BLACK)
        elif self.cyrils_white & chess.BB_SQUARES[square]:
            return chess.Piece(CYRIL, chess.WHITE)
        elif self.cyrils_black & chess.BB_SQUARES[square]:
            return chess.Piece(CYRIL, chess.BLACK)
        elif self.eves_white & chess.BB_SQUARES[square]:
            return chess.Piece(EVE, chess.WHITE)
        elif self.eves_black & chess.BB_SQUARES[square]:
            return chess.Piece(EVE, chess.BLACK)
        return super().piece_at(square)

    def generate_pseudo_legal_moves(self, from_mask: Bitboard = BB_ALL, to_mask: Bitboard = BB_ALL) -> Iterator[Move]:
        our_pieces = self.occupied_co[self.turn]
        if self.turn == chess.WHITE:
            our_amazons = self.amazons_white
            our_cyrils = self.cyrils_white
            our_eves = self.eves_white
        else:
            our_amazons = self.amazons_black
            our_cyrils = self.cyrils_black
            our_eves = self.eves_black

        # Generování tahů pro amazonky
        for from_square in chess.scan_forward(our_amazons & from_mask):
            attacks = self.amazon_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro Cyrily
        for from_square in chess.scan_forward(our_cyrils & from_mask):
            attacks = self.cyril_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro Evy
        for from_square in chess.scan_forward(our_eves & from_mask):
            attacks = self.eve_attacks(from_square)
            valid_moves = attacks & ~our_pieces & to_mask
            for to_square in chess.scan_forward(valid_moves):
                yield Move(from_square, to_square)

        # Generování tahů pro standardní figury
        for move in super().generate_pseudo_legal_moves(from_mask, to_mask):
            piece = self.piece_at(move.from_square)
            if piece and piece.piece_type not in [AMAZON, CYRIL, EVE]:
                yield move

    def queen_attacks(self, square):
        return self.bishop_attacks(square) | self.rook_attacks(square)

    def bishop_attacks(self, square):
        return chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]]

    def rook_attacks(self, square):
        return (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
                chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]])

    def amazon_attacks(self, square):
        return self.queen_attacks(square) | chess.BB_KNIGHT_ATTACKS[square]

    def cyril_attacks(self, square):
        return self.rook_attacks(square) | chess.BB_KNIGHT_ATTACKS(square)

    def eve_attacks(self, square):
        return self.bishop_attacks(square) | chess.BB_KNIGHT_ATTACKS(square)

    def is_pseudo_legal(self, move):
        from_square = move.from_square
        to_square = move.to_square
        piece = self.piece_at(from_square)

        if not piece or piece.color != self.turn:
            return False

        if self.occupied_co[self.turn] & chess.BB_SQUARES[to_square]:
            return False

        if self.is_castling(move):
            return True

        if piece.piece_type == AMAZON:
            return bool(self.amazon_attacks(from_square) & chess.BB_SQUARES[to_square])
        elif piece.piece_type == CYRIL:
            return bool(self.cyril_attacks(from_square) & chess.BB_SQUARES[to_square])
        elif piece.piece_type == EVE:
            return bool(self.eve_attacks(from_square) & chess.BB_SQUARES[to_square])
        else:
            return super().is_pseudo_legal(move)

    def is_legal(self, move):
        if not self.is_pseudo_legal(move):
            return False

        from_square = move.from_square
        to_square = move.to_square
        piece = self.piece_at(from_square)
        captured_piece = self.piece_at(to_square)

        self.clear_square(from_square)
        self.clear_square(to_square)
        self._set_piece_at(to_square, piece.piece_type, piece.color)

        king_square = to_square if piece.piece_type == chess.KING else self.king(self.turn)
        is_check = self._is_attacked_by(not self.turn, king_square)

        self.clear_square(to_square)
        self._set_piece_at(from_square, piece.piece_type, piece.color)
        if captured_piece:
            self._set_piece_at(to_square, captured_piece.piece_type, captured_piece.color)

        if is_check:
            attackers = self.attackers(not self.turn, king_square)
    #        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)]}")

        return not is_check

    def _is_attacked_by(self, color, square):
        attackers = self.attackers(color, square)
        return bool(attackers)

    def attackers(self, color, square):
        attackers = chess.BB_EMPTY

        knights = self.knights & self.occupied_co[color]
        attackers |= knights & chess.BB_KNIGHT_ATTACKS[square]

        king = self.kings & self.occupied_co[color]
        attackers |= king & chess.BB_KING_ATTACKS[square]

        pawns = self.pawns & self.occupied_co[color]
        if color == chess.WHITE:
            attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.BLACK][square]
        else:
            attackers |= pawns & chess.BB_PAWN_ATTACKS[chess.WHITE][square]

        queens = self.queens & self.occupied_co[color]
        bishops = (self.bishops | queens) & self.occupied_co[color]
        rooks = (self.rooks | queens) & self.occupied_co[color]

        attackers |= chess.BB_DIAG_ATTACKS[square][self.occupied & chess.BB_DIAG_MASKS[square]] & bishops
        attackers |= (chess.BB_RANK_ATTACKS[square][self.occupied & chess.BB_RANK_MASKS[square]] |
                      chess.BB_FILE_ATTACKS[square][self.occupied & chess.BB_FILE_MASKS[square]]) & rooks

        amazons = self.amazons_white if color == chess.WHITE else self.amazons_black
        for amazon_square in chess.scan_forward(amazons):
            if self.amazon_attacks(amazon_square) & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[amazon_square]

        cyrils = self.cyrils_white if color == chess.WHITE else self.cyrils_black
        for cyril_square in chess.scan_forward(cyrils):
            if self.cyril_attacks(cyril_square) & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[cyril_square]

        eves = self.eves_white if color == chess.WHITE else self.eves_black
        for eve_square in chess.scan_forward(eves):
            if self.eve_attacks(eve_square) & chess.BB_SQUARES[square]:
                attackers |= chess.BB_SQUARES[eve_square]

        return attackers

    def push(self, move):
        if not self.is_legal(move):
            raise ValueError(f"Move {move} is not legal in position {self.fen()}")

        piece = self.piece_at(move.from_square)
        captured_piece = self.piece_at(move.to_square)

        self.clear_square(move.from_square)
        self.clear_square(move.to_square)
        self._set_piece_at(move.to_square, piece.piece_type, piece.color)

        self.turn = not self.turn

        self.move_stack.append((move, captured_piece))

    def pop(self):
        if not self.move_stack:
            return None

        move, captured_piece = self.move_stack.pop()

        piece = self.piece_at(move.to_square)

        self.clear_square(move.from_square)
        self.clear_square(move.to_square)

        self._set_piece_at(move.from_square, piece.piece_type, piece.color)

        if captured_piece:
            self._set_piece_at(move.to_square, captured_piece.piece_type, captured_piece.color)

        self.turn = not self.turn

        return move

    def is_check(self):
        king_square = self.king(self.turn)
        if king_square is None:
            return False
        is_check = self._is_attacked_by(not self.turn, king_square)
  #      print(f"[DEBUG] Checking if position is check: FEN: {self.fen()}, King at {chess.SQUARE_NAMES[king_square]}, is_check: {is_check}")
        return is_check

    def is_checkmate(self):
        if not self.is_check():
  #          print(f"[DEBUG] Position is not check, hence not checkmate: FEN: {self.fen()}")
            return False
        legal_moves = list(self.generate_legal_moves())
 #       print(f"[DEBUG] Checking if position is checkmate: FEN: {self.fen()}, Legal moves: {legal_moves}")
        return len(legal_moves) == 0

    def is_game_over(self):
        return self.is_checkmate() or self.is_stalemate() or self.is_insufficient_material()

    def is_stalemate(self):
        if self.is_check():
            return False
        legal_moves = list(self.generate_legal_moves())
  #      print(f"[DEBUG] Checking if position is stalemate: FEN: {self.fen()}, Legal moves: {legal_moves}")
        return len(legal_moves) == 0

    def is_insufficient_material(self):
        return (self.pawns | self.rooks | self.queens | self.amazons_white | self.amazons_black |
                self.cyrils_white | self.cyrils_black | self.eves_white | self.eves_black) == 0 and (
            chess.popcount(self.occupied) <= 3
        )

    def generate_legal_moves(self, from_mask=chess.BB_ALL, to_mask=chess.BB_ALL):
        for move in self.generate_pseudo_legal_moves(from_mask, to_mask):
            if self.is_legal(move):
      #          print(f"[DEBUG] Legal move: {move}")
                yield move
       #     else:
        #        print(f"[DEBUG] Illegal move: {move}")

    def debug_amazons(self):
        pass
      #  print(f"Bitboard bílých amazonek: {format(self.amazons_white, '064b')}")
    #   print(f"Bitboard černých amazonek: {format(self.amazons_black, '064b')}")
        for square in chess.SQUARES:
            pass
       #     if self.amazons_white & chess.BB_SQUARES[square]:
       #         print(f"Bílá amazonka na {chess.SQUARE_NAMES[square]}")
     #       if self.amazons_black & chess.BB_SQUARES[square]:
       #         print(f"Černá amazonka na {chess.SQUARE_NAMES[square]}")

    def debug_cyrils(self):
        pass
       # print(f"Bitboard bílých Cyrils: {format(self.cyrils_white, '064b')}")
       # print(f"Bitboard černých Cyrils: {format(self.cyrils_black, '064b')}")
       # for square in chess.SQUARES:
       #     if self.cyrils_white & chess.BB_SQUARES[square]:
      #          print(f"Bílý Cyril na {chess.SQUARE_NAMES[square]}")
     #       if self.cyrils_black & chess.BB_SQUARES[square]:
    #            print(f"Černý Cyril na {chess.SQUARE_NAMES[square]}")

    def debug_eves(self):
        pass
    #    print(f"Bitboard bílých Eves: {format(self.eves_white, '064b')}")
     #   print(f"Bitboard černých Eves: {format(self.eves_black, '064b')}")
      #  for square in chess.SQUARES:
      #      if self.eves_white & chess.BB_SQUARES[square]:
          #      print(f"Bílá Eve na {chess.SQUARE_NAMES[square]}")
       #     if self.eves_black & chess.BB_SQUARES[square]:
       #         print(f"Černá Eve na {chess.SQUARE_NAMES[square]}")

    def piece_symbol(self, piece):
        if piece is None:
            return '.'
        if piece.piece_type == AMAZON:
            return 'A' if piece.color == chess.WHITE else 'a'
        if piece.piece_type == CYRIL:
            return 'C' if piece.color == chess.WHITE else 'c'
        if piece.piece_type == EVE:
            return 'E' if piece.color == chess.WHITE else 'e'
        return piece.symbol()

    def piece_type_at(self, square):
        if (self.amazons_white | self.amazons_black) & chess.BB_SQUARES[square]:
            return AMAZON
        if (self.cyrils_white | self.cyrils_black) & chess.BB_SQUARES[square]:
            return CYRIL
        if (self.eves_white | self.eves_black) & chess.BB_SQUARES[square]:
            return EVE
        return super().piece_type_at(square)

    def color_at(self, square):
        if self.amazons_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.amazons_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        if self.cyrils_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.cyrils_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        if self.eves_white & chess.BB_SQUARES[square]:
            return chess.WHITE
        if self.eves_black & chess.BB_SQUARES[square]:
            return chess.BLACK
        return super().color_at(square)

    @property
    def legal_moves(self):
        return list(self.generate_legal_moves())

    def __str__(self):
        builder = []
        for square in chess.SQUARES_180:
            piece = self.piece_at(square)
            symbol = self.piece_symbol(piece) if piece else '.'
            builder.append(symbol)
            if chess.square_file(square) == 7:
                if square != chess.H1:
                    builder.append('\n')
        return ''.join(builder)

    def print_all_possible_moves(self):
        pass
    #    print(f"[DEBUG] All possible moves for FEN: {self.fen()}")
  #      for move in self.generate_pseudo_legal_moves():
   #         print(f"Move: {move}, Is legal: {self.is_legal(move)}")

def simplify_fen_string(fen):
    parts = fen.split(' ')
    return ' '.join(parts[:4])  # Zachováváme pouze informace o pozici, barvě na tahu, rošádách a en passant

def format_time(seconds):
    hours, remainder = divmod(seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"

def print_elapsed_time(stop_event, start_time):
    while not stop_event.is_set():
        elapsed_time = time.time() - start_time
        print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
        time.sleep(1)

def format_time(seconds):
    hours, remainder = divmod(seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"

def print_elapsed_time(stop_event, start_time):
    while not stop_event.is_set():
        elapsed_time = time.time() - start_time
        print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
        time.sleep(1)


import chess
from typing import Dict
import time


def format_time(seconds):
    hours, remainder = divmod(seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"

def simplify_fen(fen):
    return ' '.join(fen.split()[:4])


import threading
import time

def print_elapsed_time(stop_event, start_time):
    while not stop_event.is_set():
        elapsed_time = time.time() - start_time
        print(f"\rUplynulý čas: {format_time(elapsed_time)}", end="", flush=True)
        time.sleep(1)


def calculate_optimal_moves(start_fen: str) -> Dict[str, int]:
    print("Funkce calculate_optimal_moves byla zavolána")
    print(f"Počáteční FEN: {start_fen}")

    board = CustomBoard(start_fen)
    POZ = {1: simplify_fen_string(start_fen)}
    AR = {simplify_fen_string(start_fen): {'used': 0, 'to_end': None, 'depth': 0}}
    N = 1
    M = 0

    start_time = time.time()
    current_depth = 0
    positions_at_depth = 0
    depth_start_time = start_time

    stop_event = threading.Event()
    timer_thread = threading.Thread(target=print_elapsed_time, args=(stop_event, start_time))
    timer_thread.start()

    try:
        print("Začínám generovat pozice...")

        # Generate all positions
        while M < N:
            M += 1
            current_fen = POZ[M]
            board.set_custom_fen(current_fen)
            simplified_current_fen = simplify_fen_string(current_fen)

            if AR[simplified_current_fen]['depth'] > current_depth:
                depth_time = time.time() - depth_start_time
                print(f"\nHloubka {current_depth}: {positions_at_depth} pozic, Čas hloubky: {format_time(depth_time)}")
                current_depth = AR[simplified_current_fen]['depth']
                positions_at_depth = 0
                depth_start_time = time.time()

            positions_at_depth += 1

            if AR[simplified_current_fen]['used'] == 0:
                AR[simplified_current_fen]['used'] = 1
                legal_moves = list(board.legal_moves)
                for move in legal_moves:
                    board.push(move)
                    POZ2 = board.fen()
                    simplified_POZ2 = simplify_fen_string(POZ2)

                    if simplified_POZ2 not in AR:
                        N += 1
                        POZ[N] = simplified_POZ2
                        AR[simplified_POZ2] = {'used': 0, 'to_end': None, 'depth': AR[simplified_current_fen]['depth'] + 1}

                    board.pop()

        depth_time = time.time() - depth_start_time
        print(f"\nHloubka {current_depth}: {positions_at_depth} pozic, Čas hloubky: {format_time(depth_time)}")
        print(f"Generování pozic dokončeno. Celkový počet pozic: {N}")

        # Initial evaluation
        print("\nZačínám počáteční ohodnocení...")
        stalemates = 0
        checkmates = 0
        for i in range(1, N + 1):
            current_fen = POZ[i]
            board.set_custom_fen(current_fen)
            simplified_current_fen = simplify_fen_string(current_fen)

            if board.is_checkmate():
                AR[simplified_current_fen]['to_end'] = -1000 if board.turn == chess.WHITE else 1000
                checkmates += 1
            elif board.is_stalemate() or board.is_insufficient_material():
                AR[simplified_current_fen]['to_end'] = 0
                stalemates += 1

        print(f"Počáteční ohodnocení: Maty: {checkmates}, Paty: {stalemates}, Normální pozice: {N - checkmates - stalemates}")

        # Iterative evaluation
        print("\nZačínám iterativní ohodnocení...")
        iteration = 0
        changed = True
        while changed:
            iteration += 1
            changed = False
            changed_positions = 0
            iteration_start_time = time.time()

            for i in range(1, N + 1):
                current_fen = POZ[i]
                board.set_custom_fen(current_fen)
                simplified_current_fen = simplify_fen_string(current_fen)

                if AR[simplified_current_fen]['to_end'] is None:
                    legal_moves = list(board.legal_moves)
                    all_moves_evaluated = True
                    best_value = 1001 if board.turn == chess.BLACK else -1001

                    for move in legal_moves:
                        board.push(move)
                        POZ2 = board.fen()
                        simplified_POZ2 = simplify_fen_string(POZ2)

                        if AR[simplified_POZ2]['to_end'] is None:
                            all_moves_evaluated = False
                            break

                        if board.turn == chess.WHITE:
                            best_value = max(best_value, -AR[simplified_POZ2]['to_end'])
                        else:
                            best_value = min(best_value, -AR[simplified_POZ2]['to_end'])

                        board.pop()

                    if all_moves_evaluated:
                        AR[simplified_current_fen]['to_end'] = best_value
                        changed = True
                        changed_positions += 1

            iteration_time = time.time() - iteration_start_time
            unevaluated = sum(1 for v in AR.values() if v['to_end'] is None)

            print(f"\nIterace {iteration}: Změněno {changed_positions} pozic")
            print(f"Čas iterace: {format_time(iteration_time)}")
            print(f"Neohodnocené pozice: {unevaluated}")

        print("\nVýpočet dokončen.")
        return {fen: data['to_end'] for fen, data in AR.items() if data['to_end'] is not None}

    finally:
        stop_event.set()
        timer_thread.join()

# Helper function to format time
def format_time(seconds):
    hours, remainder = divmod(seconds, 3600)
    minutes, seconds = divmod(remainder, 60)
    return f"{int(hours):02d}h {int(minutes):02d}m {int(seconds):02d}s"

if __name__ == "__main__":
    start_fen = "8/3k4/8/8/8/8/A7/6K1 w - - 0 1"
    AR = calculate_optimal_moves(start_fen)

    # Výpis výsledků
    print("\nVýsledky:")
    for fen, hodnota in AR.items():
        if hodnota != 0:
            print(f"FEN: {fen}")
            print(f"Hodnota: {hodnota}")
            print()