repair komi. add todo for forbid pass:

AlphaGo/engine.py

@@ -183,7 +183,7 @@ class GTPEngine():
             return 'unknown player', False
 
     def cmd_get_score(self, args, **kwargs):
-        return self._game.game_engine.executor_get_score(), None
+        return self._game.game_engine.executor_get_score(True), None
 
     def cmd_show_board(self, args, **kwargs):
         return self._game.board, True

AlphaGo/game.py

@@ -23,7 +23,7 @@ class Game:
     TODO : Maybe merge with the engine class in future, 
     currently leave it untouched for interacting with Go UI.
     '''
-    def __init__(self, size=9, komi=6.5, checkpoint_path=None):
+    def __init__(self, size=9, komi=3.75, checkpoint_path=None):
         self.size = size
         self.komi = komi
         self.board = [utils.EMPTY] * (self.size ** 2)
@@ -75,7 +75,7 @@ class Game:
         self.game_engine.simulate_board = copy.copy(latest_boards[-1])
         nn_input = self.generate_nn_input(self.game_engine.simulate_latest_boards, color)
         mcts = MCTS(self.game_engine, self.evaluator, [self.game_engine.simulate_latest_boards, color], self.size ** 2 + 1, inverse=True)
-        mcts.search(max_step=1)
+        mcts.search(max_step=5)
         temp = 1
         prob = mcts.root.N ** temp / np.sum(mcts.root.N ** temp)
         choice = np.random.choice(self.size ** 2 + 1, 1, p=prob).tolist()[0]

AlphaGo/go.py

@@ -121,12 +121,8 @@ class Go:
         if self._is_eye(current_board, color, vertex):
             return False
             # forbid position on its own eye.
-        #if self._is_game_finish(current_board, color) and vertex == utils.PASS
-        #    return False
-        # forbid pass if the game is not finished.
         return True
 
-
     def _is_game_finished(self, current_board, color):
         '''
         for each empty position, if it has both BLACK and WHITE neighbors, the game is still not finished
@@ -192,6 +188,7 @@ class Go:
         if len(invalid_action_list) < len(action_set) - 1:
             invalid_action_list.append(action_set[-1])
             # forbid pass, if we have other choices
+            # TODO: In fact we should not do this. In some extreme cases, we should permit pass.
         return invalid_action_list
 
     def _do_move(self, board, color, vertex):