From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Wed, 10 Feb 2021 19:42:20 +0000 (+0100)
Subject: Simplify LMR for losers chess
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=100b4d16e581cdf6106a7d496e2d8a711b141435;p=fairystockfish.git

Simplify LMR for losers chess

losers STC
LLR: 2.99 (-2.94,2.94) [-10.00,5.00]
Total: 1844 W: 823 L: 775 D: 246
http://www.variantfishtest.org:6543/tests/view/602303586e23db669974e8ca

losers LTC
LLR: 2.99 (-2.94,2.94) [-10.00,5.00]
Total: 1579 W: 711 L: 661 D: 207
http://www.variantfishtest.org:6543/tests/view/602389266e23db669974e8d5
---

diff --git a/src/search.cpp b/src/search.cpp
index 55b093c..0333a67 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1244,7 +1244,7 @@ moves_loop: // When in check, search starts from here
       // re-searched at full depth.
       if (    depth >= 3
           &&  moveCount > 1 + 2 * rootNode
-          && !(pos.must_capture() && (givesCheck || pos.has_capture()))
+          && !(pos.must_capture() && pos.has_capture())
           && (  !captureOrPromotion
               || moveCountPruning
               || ss->staticEval + PieceValue[EG][pos.captured_piece()] <= alpha