Bench: 28437178

TerjeKir · Dec 27, 2024 · d878a2c · d878a2c
1 parent 7608ca3
commit d878a2c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/search.c b/src/search.c
@@ -347,6 +347,8 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
     if (!isTerminal(ttScore) && TTScoreIsMoreInformative(ttBound, ttScore, eval))
         eval = ttScore;
 
+    int evalCorrection = inCheck ? 0 : abs(eval - unadjustedEval);
+
     // Improving if not in check, and current eval is higher than 2 plies ago
     bool improving = !inCheck && eval > (ss-2)->staticEval;
 
@@ -550,6 +552,8 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
             // Reduce more in cut nodes
             r += 2 * cutnode;
 
+            r -= MIN(2, evalCorrection / 128);
+
             // Depth after reductions, avoiding going straight to quiescence as well as extending
             Depth lmrDepth = CLAMP(newDepth - r, 1, newDepth);