Bench 2521244

Reintroduce nnue pawn scaling (tuned 60k)
cj5716 · May 30, 2023 · 79bb2e8 · 79bb2e8 · locutus2 · May 31, 2023
1 parent 7e9b131
commit 79bb2e8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -1063,7 +1063,7 @@ Value Eval::evaluate(const Position& pos) {
   else
   {
       int nnueComplexity;
-      int npm = pos.non_pawn_material() / 64;
+      int npm = 15 * pos.non_pawn_material() / 1024;
 
       Color stm = pos.side_to_move();
       Value optimism = pos.this_thread()->optimism[stm];
@@ -1076,7 +1076,7 @@ Value Eval::evaluate(const Position& pos) {
                         ) / 1024;
 
       optimism += optimism * nnueComplexity / 256;
-      v = (nnue * (945 + npm) + optimism * (174 + npm)) / 1024;
+      v = (nnue * (960 + npm) + optimism * (159 + npm - pos.count<PAWN>())) / 1024;
   }
 
   // Damp down the evaluation linearly when shuffling