Pawn and Piece Values Tuned at LTC

SFisGOD · snicolet · commit cd732c080b25 · 2018-11-08T16:34:10.000+01:00
Failed STC LLR: -2.96 (-2.94,2.94) [0.00,4.00] Total: 27487 W: 5846 L: 5903 D: 15738 http://tests.stockfishchess.org/tests/view/5be1d3190ebc595e0ae2e5b8 Passed 1st LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 38503 W: 6270 L: 5999 D: 26234 http://tests.stockfishchess.org/tests/view/5be1f5ef0ebc595e0ae2e750 Passed 2nd LTC LLR: 2.95 (-2.94,2.94) [0.00,4.00] Total: 34016 W: 5584 L: 5326 D: 23106 http://tests.stockfishchess.org/tests/view/5be2a1970ebc595e0ae2f1b4 This pull request lead to an interesting discussion about testing methodology for Stockfish: #1804 Bench: 3647775
diff --git a/src/types.h b/src/types.h
@@ -176,10 +176,10 @@ enum Value : int {
   VALUE_MATE_IN_MAX_PLY  =  VALUE_MATE - 2 * MAX_PLY,
   VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY,
 
-  PawnValueMg   = 142,   PawnValueEg   = 207,
-  KnightValueMg = 784,   KnightValueEg = 868,
-  BishopValueMg = 828,   BishopValueEg = 916,
-  RookValueMg   = 1286,  RookValueEg   = 1378,
+  PawnValueMg   = 136,   PawnValueEg   = 208,
+  KnightValueMg = 782,   KnightValueEg = 865,
+  BishopValueMg = 830,   BishopValueEg = 918,
+  RookValueMg   = 1289,  RookValueEg   = 1378,
   QueenValueMg  = 2529,  QueenValueEg  = 2687,
 
   MidgameLimit  = 15258, EndgameLimit  = 3915
