Tuned Values after 2 million spsa games

[stockfish] / src / pawns.cpp

diff --git a/src/pawns.cpp b/src/pawns.cpp
index a65f2338d1fee51f3c6301f69d2e383c7e0c6785..02c584e61aa2edd28e17641dd8a8dd82571b6c08 100644 (file)
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -32,35 +32,35 @@ namespace {
   #define S(mg, eg) make_score(mg, eg)
 
   // Pawn penalties
-  constexpr Score Isolated = S(13, 16);
-  constexpr Score Backward = S(17, 11);
-  constexpr Score Doubled = S(13, 40);
+ constexpr Score Isolated = S( 5, 15);
+ constexpr Score Backward = S(9, 24);
+ constexpr Score Doubled  = S(11, 56);
 
   // Connected pawn bonus by opposed, phalanx, #support and rank
   Score Connected[2][2][3][RANK_NB];
 
   // Strength of pawn shelter for our king by [distance from edge][rank].
   // RANK_1 = 0 is used for files where we have no pawn, or pawn is behind our king.
-  constexpr Value ShelterStrength[int(FILE_NB) / 2][RANK_NB] = {
-    { V(  7), V(76), V( 84), V( 38), V(  7), V( 30), V(-19) },
-    { V(-13), V(83), V( 42), V(-27), V(  2), V(-32), V(-45) },
-    { V(-26), V(63), V(  5), V(-44), V( -5), V(  2), V(-59) },
-    { V(-19), V(53), V(-11), V(-22), V(-12), V(-51), V(-60) }
+  constexpr  Value ShelterStrength[int(FILE_NB) / 2][RANK_NB] = {
+    { V( -3), V(81), V( 93), V( 58), V( 39), V( 18), V(  25) },
+    { V(-40), V(61), V( 35), V(-49), V(-29), V(-11), V(-63) },
+    { V(-7), V(75), V( 23), V(-2), V( 32), V( 3), V(-45) },
+    { V(-36), V(-13), V(-29), V(-52), V(-48), V(-67), V(-166) }
   };
 
   // Danger of enemy pawns moving toward our king by [distance from edge][rank].
   // RANK_1 = 0 is used for files where the enemy has no pawn, or their pawn
   // is behind our king.
   constexpr Value UnblockedStorm[int(FILE_NB) / 2][RANK_NB] = {
-    { V( 25), V( 79), V(107), V( 51), V( 27), V(  0), V(  0) },
-    { V(  5), V( 35), V(121), V( -2), V( 15), V(-10), V(-10) },
-    { V(-20), V( 22), V( 98), V( 36), V(  7), V(-20), V(-20) },
-    { V(-27), V( 24), V( 80), V( 25), V( -4), V(-30), V(-30) }
+    { V(89), V( 107), V( 123), 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) }
   };
 
   // Danger of blocked enemy pawns storming our king, by rank
   constexpr Value BlockedStorm[RANK_NB] =
-    { V(  0), V(  0), V( 75), V(-10), V(-20), V(-20), V(-20) };
+    { V(0), V(0), V( 66), V(6), V(5), V(1), V(15) };
 
   #undef S
   #undef V