From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Fri, 1 Jan 2021 11:43:33 +0000 (+0100)
Subject: Increase king proximity for drop games
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=c70887e12db3b4648ab778c8b6ef7671a03b7bf6;p=fairystockfish.git

Increase king proximity for drop games

shogi STC
LLR: -2.96 (-2.94,2.94) [0.00,10.00]
Total: 13787 W: 6904 L: 6808 D: 75
http://www.variantfishtest.org:6543/tests/view/5fe9d8b56e23db221d9e96fc

shogi LTC
LLR: 2.95 (-2.94,2.94) [0.00,10.00]
Total: 7870 W: 4019 L: 3804 D: 47
http://www.variantfishtest.org:6543/tests/view/5fed8f3d6e23db221d9e97cd

crazyhouse STC
LLR: 2.95 (-2.94,2.94) [-10.00,5.00]
Total: 5057 W: 2468 L: 2438 D: 151
http://www.variantfishtest.org:6543/tests/view/5feda0aa6e23db221d9e97d3

crazyhouse LTC
LLR: 2.96 (-2.94,2.94) [-10.00,5.00]
Total: 4781 W: 2325 L: 2293 D: 163
http://www.variantfishtest.org:6543/tests/view/5feda3ba6e23db221d9e97db

minishogi STC
LLR: -2.97 (-2.94,2.94) [0.00,10.00]
Total: 10080 W: 5061 L: 5019 D: 0
http://www.variantfishtest.org:6543/tests/view/5fea062b6e23db221d9e9714

minishogi LTC
LLR: 2.97 (-2.94,2.94) [-10.00,5.00]
Total: 3575 W: 1809 L: 1766 D: 0
http://www.variantfishtest.org:6543/tests/view/5feda1c26e23db221d9e97d6
---

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index fac10ac..ccfd4d7 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -304,7 +304,7 @@ namespace {
 
 
   // Variant and fairy piece bonuses
-  constexpr Score KingProximity        = S(2, 4);
+  constexpr Score KingProximity        = S(2, 6);
   constexpr Score EndgameKingProximity = S(0, 10);
   constexpr Score ConnectedSoldier     = S(20, 20);