def get_all_black_pawn_attacks(current_board):
all_attacks = []
for i in range(len(current_board)):
for j in range(len(current_board[i])):
piece_type = current_board[i][j].split("_")[1]
current_possition = [i, j]
if piece_type == "bp":
piece_attacks = move_check.get_current_piece_attacks(
current_possition, current_board)
for pos in piece_attacks:
all_attacks.append(pos)
# To purge this list of duplicates!
res = []
for i in all_attacks:
if i not in res:
res.append(i)
return res
def opponent_has_no_legal_moves(turn, current_board):
all_white_coords = get_all_white_coords(current_board)
all_black_coords = get_all_black_coords(current_board)
# all_white_moves = get_all_white_moves(current_board)
# all_black_moves = get_all_black_moves(current_board)
# all_black_attacks = get_all_black_attacks(current_board)
# all_white_attacks = get_all_white_attacks(current_board)
# white_king_coord = get_white_king_coord(current_board)
# black_king_coord = get_black_king_coord(current_board)
black_king_attacks = get_black_king_attacks(current_board)
white_king_attacks = get_white_king_attacks(current_board)
# all_black_pawn_attacks = get_all_black_pawn_attacks(current_board)
# all_white_pawn_attacks = get_all_white_pawn_attacks(current_board)
# all_white_pieces_attacked_by_black_pawns = [pos for pos in all_white_coords if pos in all_black_pawn_attacks]
# all_black_pieces_attacked_by_white_pawns = [pos for pos in all_black_coords if pos in all_white_pawn_attacks]
# black_king_moves = black_king_attacks
# for pos in black_king_attacks:
# if pos in white_king_attacks:
# black_king_moves.pop(pos)
# white_king_moves = white_king_attacks
# for pos in white_king_attacks:
# if pos in black_king_attacks:
# white_king_moves.pop(pos)
if turn == "white":
check = 0
# Test all available black moves. If any move is legal, the function returns false.
for pos in all_black_coords:
this_current_piece = move_check.find_current_piece(
pos, current_board)
piece_moves = move_check.get_current_piece_moves(
pos, current_board)
if this_current_piece != "bp":
for attack in piece_moves:
new_board = current_board
# bug happens here
attacked_piece = find_current_piece(attack, current_board)
new_board = test_move(pos, attack, new_board)
new_all_black_attacks = get_all_black_attacks(new_board)
new_all_white_attacks = get_all_white_attacks(new_board)
new_white_king_coord = get_white_king_coord(new_board)
new_black_king_coord = get_black_king_coord(new_board)
new_board = rev_test_move(pos, attack, new_board,
attacked_piece)
if (new_black_king_coord not in new_all_white_attacks):
check = 1
elif this_current_piece == "bp":
pawn_attacks = move_check.get_current_piece_attacks(
pos, current_board)
valid_attacks = [
pos for pos in all_white_coords if pos in pawn_attacks
]
for attack in valid_attacks:
new_board = current_board
attacked_piece = find_current_piece(attack, current_board)
new_board = test_move(pos, attack, new_board)
new_all_black_attacks = get_all_black_attacks(new_board)
new_all_white_attacks = get_all_white_attacks(new_board)
new_white_king_coord = get_white_king_coord(new_board)
new_black_king_coord = get_black_king_coord(new_board)
new_board = rev_test_move(pos, attack, new_board,
attacked_piece)
if (new_black_king_coord not in new_all_white_attacks):
check = 1
print(check)
if check == 1:
return False
elif check == 0:
return True
if turn == "black":
check = 0
# Test all available white moves. If any move is legal, the function returns false.
for pos in all_white_coords:
this_current_piece = move_check.find_current_piece(
pos, current_board)
piece_moves = move_check.get_current_piece_moves(
pos, current_board)
if this_current_piece != "wp":
for attack in piece_moves:
new_board = current_board
attacked_piece = find_current_piece(attack, current_board)
new_board = test_move(pos, attack, new_board)
new_all_black_attacks = get_all_black_attacks(new_board)
new_all_white_attacks = get_all_white_attacks(new_board)
new_white_king_coord = get_white_king_coord(new_board)
new_black_king_coord = get_black_king_coord(new_board)
new_board = rev_test_move(pos, attack, new_board,
attacked_piece)
if (new_white_king_coord not in new_all_black_attacks):
check = 1
elif this_current_piece == "wp":
pawn_attacks = move_check.get_current_piece_attacks(
pos, current_board)
valid_attacks = [
pos for pos in all_black_coords if pos in pawn_attacks
]
for attack in valid_attacks:
new_board = current_board
attacked_piece = find_current_piece(attack, current_board)
new_board = test_move(pos, attack, new_board)
new_all_black_attacks = get_all_black_attacks(new_board)
new_all_white_attacks = get_all_white_attacks(new_board)
new_white_king_coord = get_white_king_coord(new_board)
new_black_king_coord = get_black_king_coord(new_board)
new_board = rev_test_move(pos, attack, new_board,
attacked_piece)
if (new_white_king_coord not in new_all_black_attacks):
check = 1
print(check)
if check == 1:
return False
elif check == 0:
return True