Keep more pawns

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 437e753a7ca64b16e7a585d118e6cae8c4aca376..789e28594cd6d8f2a7c555750b165903088f1afd 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1091,8 +1091,8 @@ Value Eval::evaluate(const Position& pos) {
       // Scale and shift NNUE for compatibility with search and classical evaluation
       auto  adjusted_NNUE = [&]()
       {
-         int material = pos.non_pawn_material() + 2 * PawnValueMg * pos.count<PAWN>();
-         int scale =  641
+         int material = pos.non_pawn_material() + 4 * PawnValueMg * pos.count<PAWN>();
+         int scale =  580
                     + material / 32
                     - 4 * pos.rule50_count();