Consider king attacks by shogi pawns

shogi STC
LLR: -2.97 (-2.94,2.94) [0.00,10.00]
Total: 15338 W: 7697 L: 7579 D: 62
http://www.variantfishtest.org:6543/tests/view/5fd93c2f6e23db221d9e9543

shogi LTC
LLR: 2.95 (-2.94,2.94) [0.00,10.00]
Total: 2780 W: 1454 L: 1312 D: 14
http://www.variantfishtest.org:6543/tests/view/5fe0d92f6e23db221d9e9642

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 703eb73..539e392 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -422,7 +422,7 @@ namespace {
         kingRing[Us] = attacks_bb<KING>(s) | s;
     }
 
-    kingAttackersCount[Them] = popcount(kingRing[Us] & pe->pawn_attacks(Them));
+    kingAttackersCount[Them] = popcount(kingRing[Us] & (pe->pawn_attacks(Them) | shift<Down>(pos.pieces(Them, SHOGI_PAWN))));
     kingAttacksCount[Them] = kingAttackersWeight[Them] = 0;
     kingAttackersCountInHand[Them] = kingAttackersWeightInHand[Them] = 0;