diff --git a/src/solver/BestResponse.cpp b/src/solver/BestResponse.cpp
index 90d174b4..9ee468f6 100644
--- a/src/solver/BestResponse.cpp
+++ b/src/solver/BestResponse.cpp
@@ -118,8 +118,8 @@ BestResponse::chanceBestReponse(shared_ptr<ChanceNode> node, int player,const ve
     vector<Card>& cards = this->deck.getCards();
 
     int card_num = node->getCards().size();
-    // 可能的发牌情况,2代表每个人的holecard是两张
-    int possible_deals = node->getCards().size() - Card::long2board(current_board).size() - 2;
+    // 可能的发牌情况,4代表双方各两张holecard (both players hold two cards each)
+    int possible_deals = node->getCards().size() - Card::long2board(current_board).size() - 4;
 
     vector<float> chance_utility = vector<float>(reach_probs[player].size());
     fill(chance_utility.begin(),chance_utility.end(),0);
diff --git a/src/solver/PCfrSolver.cpp b/src/solver/PCfrSolver.cpp
index 29395eda..312c7266 100644
--- a/src/solver/PCfrSolver.cpp
+++ b/src/solver/PCfrSolver.cpp
@@ -233,8 +233,8 @@ PCfrSolver::chanceUtility(int player, shared_ptr<ChanceNode> node, const vector<
 
     int card_num = node->getCards().size();
     if(card_num % 4 != 0) throw runtime_error("card num cannot round 4");
-    // 可能的发牌情况,2代表每个人的holecard是两张
-    int possible_deals = node->getCards().size() - Card::long2board(current_board).size() - 2;
+    // 可能的发牌情况,4代表双方各两张holecard (both players hold two cards each)
+    int possible_deals = node->getCards().size() - Card::long2board(current_board).size() - 4;
     int oppo = 1 - player;
 
     //vector<float> chance_utility(reach_probs[player].size());
@@ -244,7 +244,7 @@ PCfrSolver::chanceUtility(int player, shared_ptr<ChanceNode> node, const vector<
     int random_deal = 0;
     if(this->monteCarolAlg==MonteCarolAlg::PUBLIC) {
         if (this->round_deal[GameTreeNode::gameRound2int(node->getRound())] == -1) {
-            random_deal = random(1, possible_deals + 1 + 2);
+            random_deal = random(1, possible_deals + 1 + 4);
             this->round_deal[GameTreeNode::gameRound2int(node->getRound())] = random_deal;
         } else {
             random_deal = this->round_deal[GameTreeNode::gameRound2int(node->getRound())];