From 8e47b8f9f8a017f25a1c9a9baba05b0bf9b12d2d Mon Sep 17 00:00:00 2001
From: Adam <adammegarules1@gmail.com>
Date: Sun, 16 Aug 2026 11:22:34 +0200
Subject: perf(draw) instead of having a hash map for three fold repetion check
 now we have

---
 src/board/board.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/board/board.hpp')

diff --git a/src/board/board.hpp b/src/board/board.hpp
index 133a280..e3692f6 100644
--- a/src/board/board.hpp
+++ b/src/board/board.hpp
@@ -3,6 +3,7 @@
 
 #include <cstdint>
 #include <unordered_map>
+#include <vector>
 
 enum PieceType : std::uint8_t {
   NONEPIECE,
@@ -67,10 +68,12 @@ struct Game {
   Position enPassant;
   bool canEnpassant = false;
   GameState state = TURN;
-  std::unordered_map<uint64_t, int> ThreeFoldMap;
+  std::vector<uint64_t> history;
   std::unordered_map<uint64_t, TranspositionsEntry> *Transpositions = nullptr;
 };
 
+bool isRepetionDraw(uint64_t key, Game *g);
+
 struct Undo {
   Piece movedPiece;
   Piece capturedPiece;
-- 
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