From 8bfe1a4d035c10fb9f98816d46b8e66e087f820f Mon Sep 17 00:00:00 2001
From: "Shahin M. Shahin" <peregrineshahin@gmail.com>
Date: Thu, 9 May 2024 22:45:32 +0300
Subject: [PATCH] Expr5

---
 src/search.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/search.cpp b/src/search.cpp
index 4572ffc900d..037b0b6e9fc 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -775,8 +775,12 @@ Value Search::Worker::search(
                - (ss - 1)->statScore / 254
              >= beta
         && eval >= beta && eval < VALUE_TB_WIN_IN_MAX_PLY && (!ttMove || ttCapture))
+    {
+        if (prevSq != SQ_NONE && (ss - 1)->moveCount <= 2 && !priorCapture)
+            update_continuation_histories(ss - 1, pos.piece_on(prevSq), prevSq,
+                                            -stat_malus(depth + 1));
         return beta > VALUE_TB_LOSS_IN_MAX_PLY ? (eval + beta) / 2 : eval;
-
+    }
     // Step 9. Null move search with verification search (~35 Elo)
     if (!PvNode && (ss - 1)->currentMove != Move::null() && (ss - 1)->statScore < 16993
         && eval >= beta && ss->staticEval >= beta - 19 * depth + 326 && !excludedMove