Tuned nullmove search

[stockfish] / src / pawns.cpp

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 84f3d97748d4003c62afce8e57773956ed089bfe..04222a2aa4ee98544afd22d193850c5012fa5ba4 100644 (file)
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -56,10 +56,10 @@ namespace {
   // is behind our king. Note that UnblockedStorm[0][1-2] accommodate opponent pawn
   // on edge, likely blocked by our king.
   constexpr Value UnblockedStorm[int(FILE_NB) / 2][RANK_NB] = {
-    { V( 89), V(-285), V(-185), V(93), V(57), V( 45), V( 51) },
-    { V( 44), V( -18), V( 123), V(46), V(39), V( -7), V( 23) },
-    { V(  4), V(  52), V( 162), V(37), V( 7), V(-14), V( -2) },
-    { V(-10), V( -14), V(  90), V(15), V( 2), V( -7), V(-16) }
+    { V( 85), V(-289), V(-166), V(97), V(50), V( 45), V( 50) },
+    { V( 46), V( -25), V( 122), V(45), V(37), V(-10), V( 20) },
+    { V( -6), V(  51), V( 168), V(34), V(-2), V(-22), V(-14) },
+    { V(-15), V( -11), V( 101), V( 4), V(11), V(-15), V(-29) }
   };
 
   #undef S
@@ -69,7 +69,7 @@ namespace {
   Score evaluate(const Position& pos, Pawns::Entry* e) {
 
     constexpr Color     Them = (Us == WHITE ? BLACK : WHITE);
-    constexpr Direction Up   = (Us == WHITE ? NORTH : SOUTH);
+    constexpr Direction Up   = pawn_push(Us);
 
     Bitboard neighbours, stoppers, support, phalanx, opposed;
     Bitboard lever, leverPush, blocked;