From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Thu, 18 Oct 2018 21:49:33 +0000 (+0200)
Subject: Smoothen PSQTs for large boards
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=66ea9f2ad2dfbca708615c440d387b97c4bebd77;p=fairystockfish.git

Smoothen PSQTs for large boards

shogi
ELO: 36.62 +-47.5 (95%) LOS: 93.7%
Total: 200 W: 106 L: 85 D: 9

No functional change for board sizes <= 8x8.
---

diff --git a/src/psqt.cpp b/src/psqt.cpp
index c646508..82544cb 100644
--- a/src/psqt.cpp
+++ b/src/psqt.cpp
@@ -128,7 +128,7 @@ void init() {
       for (Square s = SQ_A1; s <= SQ_MAX; ++s)
       {
           File f = std::min(file_of(s), ~file_of(s));
-          psq[ pc][ s] = score + (pt == KING ? KingBonus[rank_of(s)][f] : Bonus[pc][rank_of(s)][f]);
+          psq[ pc][ s] = score + (pt == KING ? KingBonus[std::min(rank_of(s), RANK_8)][std::min(f, FILE_D)] : Bonus[pc][std::min(rank_of(s), RANK_8)][std::min(f, FILE_D)]);
           psq[~pc][~s] = -psq[pc][s];
       }
       // pieces in pocket