From: Stéphane Nicolet <cassio@free.fr>
Date: Wed, 6 Nov 2019 10:06:53 +0000 (+0100)
Subject: Revert "Rook PSQT Tuned"
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=9f312c80d918c6f669dcf83df3d4332e02bfa1d9

Revert "Rook PSQT Tuned"

This reverts the previous commit. The PSQT changes in this previous
commit originated from tests against quite an old version of master
which did not include the other PSQT changes of 474d133 for the other
pieces, and there might be some unknown interactions between the PSQT
tables. So we made a non-regression test of the last commit against the
last-but-one commit. This test failed, leading to the revert decision.

Failed non-regression test:
LLR: -2.96 (-2.94,2.94) [-3.00,1.00]
Total: 95536 W: 15047 L: 15347 D: 65142
http://tests.stockfishchess.org/tests/view/5dc0ba1d0ebc5904493b0112

Closes https://github.com/official-stockfish/Stockfish/pull/2395

Bench: 4362323
---

diff --git a/src/psqt.cpp b/src/psqt.cpp
index 6469c43a..60d17ad2 100644
--- a/src/psqt.cpp
+++ b/src/psqt.cpp
@@ -59,14 +59,14 @@ constexpr Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
    { S(-48,-46), S(  1,-42), S(-14,-37), S(-23,-24) }
   },
   { // Rook
-   { S(-26, -7), S(-19,-15), S( -8,-10), S(-1,-10) },
-   { S(-21,-19), S(-24, -7), S( -6,  0), S( 5, -1) },
-   { S(-29, -1), S(-20, -4), S(  6,  8), S(12,-19) },
-   { S(-14, -1), S( -1, -3), S(-12, -8), S(-7, 10) },
-   { S(-37,  1), S( -6, 13), S(  0, 14), S(10,  4) },
-   { S(-16,  9), S( -1, 15), S(  4, -8), S( 1, 16) },
-   { S( -1,  2), S( 10,  4), S( 13, 23), S(23, -4) },
-   { S( -2, 21), S(-21, -3), S(  4, 26), S(-1, 20) }
+   { S(-31, -9), S(-20,-13), S(-14,-10), S(-5, -9) },
+   { S(-21,-12), S(-13, -9), S( -8, -1), S( 6, -2) },
+   { S(-25,  6), S(-11, -8), S( -1, -2), S( 3, -6) },
+   { S(-13, -6), S( -5,  1), S( -4, -9), S(-6,  7) },
+   { S(-27, -5), S(-15,  8), S( -4,  7), S( 3, -6) },
+   { S(-22,  6), S( -2,  1), S(  6, -7), S(12, 10) },
+   { S( -2,  4), S( 12,  5), S( 16, 20), S(18, -5) },
+   { S(-17, 18), S(-19,  0), S( -1, 19), S( 9, 13) }
   },
   { // Queen
    { S( 3,-69), S(-5,-57), S(-5,-47), S( 4,-26) },