message: Tie break most visited path with action score
diff: @@ -255,11 +255,15 @@ class MCTSNode(object):
  return probs
  return probs / np.sum(probs)
  + def _top_child(self):
  + # Sort by child_N tie break with action score.
  + return np.argmax(self.child_N + self.child_action_score / 10000)
  +
  def most_visited_path_nodes(self):
  node = self
  output = []
  while node.children:
  - next_kid = np.argmax(node.child_N)
  + next_kid = node._top_child()
  node = node.children.get(next_kid)
  assert node is not None
  output.append(node)
  