def evaluateFuzzy(board: chess.Board, evaluator: Callable[[float, float],
float]):
player = chess.WHITE if board.turn == True else chess.BLACK
opponent = chess.WHITE if player == chess.BLACK else chess.BLACK
total = 0
# being in check usually means we are going the wrong route
if board.is_check():
total -= 1000
if board.has_insufficient_material(player):
total -= 1000
if board.has_insufficient_material(opponent):
total += 1000
num_moves_by_piece = {}
for move in board.legal_moves:
if move.from_square in num_moves_by_piece:
num_moves_by_piece[move.from_square] += 1
else:
num_moves_by_piece[move.from_square] = 1
for i in range(1, 7):
piece_type = board.pieces(i, player)
num_attacking = 0
for piece in piece_type:
movable_spaces = num_moves_by_piece[
piece] if piece in num_moves_by_piece else 0
for spot in board.attacks(piece):
attacked_player = board.color_at(spot)
if attacked_player == opponent:
num_attacking += 1
total += i + evaluator(movable_spaces, num_attacking)
return total
def evaluate(board: chess.Board, evaluator: Callable[[float, float, float],
float]):
# for every piece that is still alive award player 100 points
result = board.legal_moves.count() * 100
# being in check usually means we are going the wrong route
if board.is_check():
result -= 1000
if board.has_insufficient_material(chess.WHITE):
result -= 1000
# add material advantage that white has
result += diff_pieces(board)
# if on white then return as normal since white Maximizes
if board.turn is chess.WHITE:
return result
# if black then negate for minimization
else:
return -result
