From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sun, 14 Apr 2019 16:33:31 +0000 (+0200)
Subject: Less LMR for losing chess variants
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=32d3c385b7e3f4b62bf670c00f2fde92108ed753;p=fairystockfish.git

Less LMR for losing chess variants

giveaway STC
LLR: 2.96 (-2.94,2.94) [0.00,10.00]
Total: 617 W: 304 L: 208 D: 105
http://35.161.250.236:6543/tests/view/5cb19ce66e23db76ed2526f0

giveaway LTC
LLR: 2.94 (-2.94,2.94) [0.00,10.00]
Total: 906 W: 401 L: 305 D: 200
http://35.161.250.236:6543/tests/view/5cb1ad106e23db76ed2526f5

losers STC
LLR: 2.96 (-2.94,2.94) [-10.00,5.00]
Total: 882 W: 441 L: 383 D: 58
http://35.161.250.236:6543/tests/view/5cb1b5b96e23db76ed2526f8

losers LTC
LLR: 2.96 (-2.94,2.94) [-10.00,5.00]
Total: 1471 W: 704 L: 651 D: 116
http://35.161.250.236:6543/tests/view/5cb1c3776e23db76ed2526fe
---

diff --git a/src/search.cpp b/src/search.cpp
index f52a317..8b0ad18 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1024,7 +1024,7 @@ moves_loop: // When in check, search starts from here
       // re-searched at full depth.
       if (    depth >= 3 * ONE_PLY
           &&  moveCount > 1
-          && (!captureOrPromotion || moveCountPruning))
+          && (!(captureOrPromotion || (pos.must_capture() && MoveList<CAPTURES>(pos).size())) || moveCountPruning))
       {
           Depth r = reduction<PvNode>(improving, depth, moveCount);