"""initial value for heuristic function"""
INITIAL_VALUE = 0
CORNER_VALUE = -2
BY_CORNER_VALUE = -1
"""Constant for game board"""

UNOCCUPIED = '-'
CORNER = 'X'
BLACK = '@'
WHITE = 'O'
INITIAL_BOARD_SIDE = 8
INITIAL_CORNER_LOCATION = [(0, 0), (7, 0), (7, 7), (0, 7)]
DIRECTIONS = UP, DOWN, LEFT, RIGHT = (0, -1), (0, 1), (-1, 0), (1, 0)
INITIAL_BY_CORNER_LOCATION = [(1, 0), (0, 1), (6, 0), (7, 1), (6, 7), (7, 6), (1, 7), (0, 7)]
