From: VoyagerOne <excelgeek@gmail.com>
Date: Mon, 12 Jul 2021 18:44:29 +0000 (-0400)
Subject: Don't save excluded move eval in TT
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=36f8d3806bb1c6e498ac8fd1a746c1714d1485a3

Don't save excluded move eval in TT

STC:
LLR: 2.93 (-2.94,2.94) <-0.50,2.50>
Total: 17544 W: 1384 L: 1236 D: 14924
Ptnml(0-2): 37, 1031, 6499, 1157, 48
https://tests.stockfishchess.org/tests/view/60ec8d9bd1189bed71812999

LTC:
LLR: 2.95 (-2.94,2.94) <0.50,3.50>
Total: 26136 W: 823 L: 707 D: 24606
Ptnml(0-2): 6, 643, 11656, 755, 8
https://tests.stockfishchess.org/tests/view/60ecb11ed1189bed718129ba

closes https://github.com/official-stockfish/Stockfish/pull/3614

Bench: 5505251
---

diff --git a/src/search.cpp b/src/search.cpp
index 3cf50eb5..fef1b518 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -760,6 +760,7 @@ namespace {
             ss->staticEval = eval = -(ss-1)->staticEval;
 
         // Save static evaluation into transposition table
+        if(!excludedMove)
         tte->save(posKey, VALUE_NONE, ss->ttPv, BOUND_NONE, DEPTH_NONE, MOVE_NONE, eval);
     }