Rook tweaks in evaluation

[stockfish] / src / psqt.cpp

diff --git a/src/psqt.cpp b/src/psqt.cpp
index 934f98986c22ff2b20fcb3b9c1c999ed59dd15b0..c9065cbe37289cad176c4331f18f667ff42a4ba7 100644 (file)
--- a/src/psqt.cpp
+++ b/src/psqt.cpp
@@ -67,7 +67,7 @@ constexpr Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
    { S(-47,-55), S( -7,-32), S(-17,-36), S(-29,-17) }
   },
   { // Rook
-   { S(-25, 0), S(-16, 0), S(-16, 0), S(-9, 0) },
+   { S(-25, 0), S(-16, 0), S(-10, 5), S( 6, 5) },
    { S(-21, 0), S( -8, 0), S( -3, 0), S( 0, 0) },
    { S(-21, 0), S( -9, 0), S( -4, 0), S( 2, 0) },
    { S(-22, 0), S( -6, 0), S( -1, 0), S( 2, 0) },