X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.cpp;h=8b44587f6962ccfc0e05ca1a7b91e4a15d84a85e;hp=47f74f84ee77888d60dacf0e03251977d3cc82ff;hb=cccf3c815c2f2be884fac4248a2be91b6823df8a;hpb=e6310b3469b07b6bbecf8d8f75367a655090f22b

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 47f74f84..8b44587f 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -116,7 +116,7 @@ namespace {
     Bitboard ourPawns   = pos.pieces(Us  , PAWN);
     Bitboard theirPawns = pos.pieces(Them, PAWN);
 
-    e->passedPawns[Us] = 0;
+    e->passedPawns[Us] = e->pawnAttacksSpan[Us] = 0;
     e->kingSquares[Us] = SQ_NONE;
     e->semiopenFiles[Us] = 0xFF;
     e->pawnAttacks[Us] = shift_bb<Right>(ourPawns) | shift_bb<Left>(ourPawns);
@@ -133,6 +133,8 @@ namespace {
         // This file cannot be semi-open
         e->semiopenFiles[Us] &= ~(1 << f);
 
+        e->pawnAttacksSpan[Us] |= pawn_attack_span(Us, s);
+
         // Flag the pawn
         neighbours  =   ourPawns   & adjacent_files_bb(f);
         doubled     =   ourPawns   & forward_bb(Us, s);
@@ -243,6 +245,7 @@ Entry* probe(const Position& pos) {
 
   e->key = key;
   e->score = evaluate<WHITE>(pos, e) - evaluate<BLACK>(pos, e);
+  e->asymmetry = popcount<Max15>(e->semiopenFiles[WHITE] ^ e->semiopenFiles[BLACK]);
   return e;
 }