Simplify pawn count in evaluation

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 9ca0e4566f6c146d96d960188b9387408a3cb0d3..208e3ed5ba4d1c43eb555b1a2d090e6b1ad8325f 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -177,7 +177,7 @@ Value Eval::evaluate(const Position& pos) {
 
       int npm = pos.non_pawn_material() / 64;
       v = (  nnue     * (915 + npm + 9 * pos.count<PAWN>())
-           + optimism * (154 + npm +     pos.count<PAWN>())) / 1024;
+           + optimism * (154 + npm                       )) / 1024;
   }
 
   // Damp down the evaluation linearly when shuffling