def play(agent_1, agent_2):
# initialize 3x3 tic tac toe board
board = Board(3)
while board.move_still_possible():
if board.player == 1: # X-player
move = agent_1(board)
else: # O-player
move = agent_2(board)
board.make_move(move)
# evaluate game state
if board.game_is_over():
# return winner
return board.player
# return 'game ended in a draw'
return 0
