From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Thu, 12 Mar 2020 20:09:51 +0000 (+0100)
Subject: Tweak piece values for nCheck
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=969cdbd370741381e9adfac084bdade5441064d2;p=fairystockfish.git

Tweak piece values for nCheck

3check STC
LLR: -2.97 (-2.94,2.94) [0.00,10.00]
Total: 11258 W: 5234 L: 5169 D: 855
http://www.variantfishtest.org:6543/tests/view/5e625bda6e23db46beba4f52

3check LTC
LLR: -2.96 (-2.94,2.94) [0.00,10.00]
Total: 18691 W: 8667 L: 8495 D: 1529
http://www.variantfishtest.org:6543/tests/view/5e6286876e23db46beba4f57

5check STC
LLR: -2.97 (-2.94,2.94) [0.00,10.00]
Total: 11102 W: 4635 L: 4568 D: 1899
http://www.variantfishtest.org:6543/tests/view/5e65f5776e23db46beba4f6d

5check LTC
LLR: -2.95 (-2.94,2.94) [0.00,10.00]
Total: 12616 W: 5145 L: 5056 D: 2415
http://www.variantfishtest.org:6543/tests/view/5e6539966e23db46beba4f6b
---

diff --git a/src/psqt.cpp b/src/psqt.cpp
index 4300b7b..33c830d 100644
--- a/src/psqt.cpp
+++ b/src/psqt.cpp
@@ -158,6 +158,9 @@ void init(const Variant* v) {
       else if (v->twoBoards)
           score = make_score(mg_value(score) * 7000 / (7000 + mg_value(score)),
                              eg_value(score) * 7000 / (7000 + eg_value(score)));
+      else if (v->checkCounting)
+          score = make_score(mg_value(score) * (40000 + mg_value(score)) / 41000,
+                             eg_value(score) * (30000 + eg_value(score)) / 31000);
       else if (pt == strongestPiece)
               score += make_score(std::max(QueenValueMg - PieceValue[MG][pt], VALUE_ZERO) / 20,
                                   std::max(QueenValueEg - PieceValue[EG][pt], VALUE_ZERO) / 20);