Score chain pawn also by rank

Use the (rescaled) CandidatePassed[] table that is already rank based. Passed both short TC LLR: 2.95 (-2.94,2.94) [-1.50,4.50] Total: 11048 W: 2272 L: 2135 D: 6641 And long TC LLR: 2.97 (-2.94,2.94) [0.00,6.00] Total: 4116 W: 769 L: 645 D: 2702 bench: 8440524
official-stockfish · Oct 18, 2013 · 25cb851 · 25cb851
1 parent 3cddb0c
commit 25cb851
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/pawns.cpp b/src/pawns.cpp
@@ -176,7 +176,7 @@ namespace {
             value -= Backward[opposed][f];
 
         if (chain)
-            value += ChainMember[f];
+            value += ChainMember[f] + CandidatePassed[relative_rank(Us, s)] / 2;
 
         if (candidate)
         {