diff --git a/src/ai/search.cpp b/src/ai/search.cpp
index e21d94d8..e11dd3df 100644
--- a/src/ai/search.cpp
+++ b/src/ai/search.cpp
@@ -519,7 +519,7 @@ value_t MillGameAi_ab::alphaBetaPruning(depth_t depth, value_t alpha, value_t be
 
     for (auto child : node->children) {
         // 棋局入栈保存，以便后续撤销着法
-        contextStack.push(dummyGame.position);
+        positionStack.push(dummyGame.position);
 
         // 执行着法
         dummyGame.command(child->move);
@@ -543,8 +543,8 @@ value_t MillGameAi_ab::alphaBetaPruning(depth_t depth, value_t alpha, value_t be
         value = alphaBetaPruning(depth - 1 + epsilon, alpha, beta, child);
 
         // 棋局弹出栈，撤销着法
-        dummyGame.position = contextStack.top();
-        contextStack.pop();
+        dummyGame.position = positionStack.top();
+        positionStack.pop();
 
         if (dummyGame.position.turn == PLAYER_1) {
             // 为走棋一方的层, 局面对走棋的一方来说是以 α 为评价
diff --git a/src/ai/search.h b/src/ai/search.h
index caaf975c..aad96795 100644
--- a/src/ai/search.h
+++ b/src/ai/search.h
@@ -215,9 +215,9 @@ private:
 
     // 局面数据栈
 //#ifdef MEMORY_POOL
-//    StackAlloc<MillGame::Position, MemoryPool<MillGame::Position> > contextStack;
+//    StackAlloc<MillGame::Position, MemoryPool<MillGame::Position> > positionStack;
 //#else
-    stack<Position, vector<Position> > contextStack;
+    stack<Position, vector<Position> > positionStack;
 //#endif
 
     // 标识，用于跳出剪枝算法，立即返回
diff --git a/src/game/position.cpp b/src/game/position.cpp
index 6bdec4a5..dd5bd88e 100644
--- a/src/game/position.cpp
+++ b/src/game/position.cpp
@@ -997,13 +997,11 @@ void Game::setTurn(player_t player)
 
     position.turnId = Player::toId(position.turn);
     position.turnChar = Player::idToCh(position.turnId);
-    //context.turnStr = Player::chToStr(context.turnChar);
 
     position.opponent = Player::getOpponent(player);
 
     position.opponentId = Player::toId(position.opponent);
     position.opponentChar = Player::idToCh(position.opponentId);
-    //context.opponentStr = Player::chToStr(context.opponentChar);
 }
 
 void Game::changeTurn()