Tuned values for the pawn piece square table

joergoster · glinscott · commit 50182f110043 · 2015-03-25T07:39:44.000+08:00
Quick measure at very fast tc: ELO: 4.77 +-2.2 (95%) LOS: 100.0% Total: 40124 W: 8711 L: 8160 D: 23253 LTC: LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 52284 W: 8880 L: 8559 D: 34845 Bench: 8865736 Resolves #311
diff --git a/src/psqtab.h b/src/psqtab.h
@@ -32,14 +32,14 @@
 static const Score PSQT[][SQUARE_NB] = {
   { },
   { // Pawn
-   S(  0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0,  0), S( 0, 0), S( 0, 0), S(  0, 0),
-   S(-20, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0,  0), S( 0, 0), S( 0, 0), S(-20, 0),
-   S(-20, 0), S( 0, 0), S(10, 0), S(20, 0), S(20, 0), S(10, 0), S( 0, 0), S(-20, 0),
-   S(-20, 0), S( 0, 0), S(20, 0), S(40, 0), S(40, 0), S(20, 0), S( 0, 0), S(-20, 0),
-   S(-20, 0), S( 0, 0), S(10, 0), S(20, 0), S(20, 0), S(10, 0), S( 0, 0), S(-20, 0),
-   S(-20, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0,  0), S( 0, 0), S( 0, 0), S(-20, 0),
-   S(-20, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0,  0), S( 0, 0), S( 0, 0), S(-20, 0),
-   S(  0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(0,  0), S( 0, 0), S( 0, 0), S(  0, 0)
+   S(  0, 0), S(  0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(  0, 0), S(  0, 0),
+   S(-22, 4), S(  3,-6), S( 7, 8), S( 3,-1), S( 3,-1), S( 7, 8), S(  3,-6), S(-22, 4),
+   S(-25,-3), S( -7,-4), S(18, 4), S(24, 5), S(24, 5), S(18, 4), S( -7,-4), S(-25,-3),
+   S(-27, 1), S(-15, 2), S(15,-8), S(30,-2), S(30,-2), S(15,-8), S(-15, 2), S(-27, 1),
+   S(-14, 7), S(  0,12), S(-2, 4), S(18,-3), S(18,-3), S(-2, 4), S(  0,12), S(-14, 7),
+   S(-12, 8), S(-13,-5), S(-6, 1), S(-4, 7), S(-4, 7), S(-6, 1), S(-13,-5), S(-12, 8),
+   S(-17, 1), S( 10,-9), S(-4, 1), S(-6,16), S(-6,16), S(-4, 1), S( 10,-9), S(-17, 1),
+   S(  0, 0), S(  0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S( 0, 0), S(  0, 0), S(  0, 0)
   },
   { // Knight
    S(-144,-98), S(-109,-83), S(-85,-51), S(-73,-16), S(-73,-16), S(-85,-51), S(-109,-83), S(-144,-98),
