From: IIvec <ivan.ivec@gmail.com>
Date: Mon, 8 May 2017 03:56:04 +0000 (-0700)
Subject: King safety and rook mobility parameters tweak
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=ae979416282d43793a49944ed007119673853555

King safety and rook mobility parameters tweak

STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 19280 W: 3595 L: 3373 D: 12312

LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 221405 W: 28940 L: 28220 D: 164245

Bench: 6506664

Closes #1105
---

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 92ad6e9a..4351fe2e 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -123,9 +123,9 @@ namespace {
     { S(-48,-59), S(-20,-23), S( 16, -3), S( 26, 13), S( 38, 24), S( 51, 42), // Bishops
       S( 55, 54), S( 63, 57), S( 63, 65), S( 68, 73), S( 81, 78), S( 81, 86),
       S( 91, 88), S( 98, 97) },
-    { S(-60,-77), S(-26,-20), S(-11, 27), S( -6, 57), S( -3, 69), S( -1, 82), // Rooks
-      S( 10,109), S( 16,121), S( 24,131), S( 25,143), S( 32,155), S( 32,163),
-      S( 43,167), S( 48,171), S( 56,173) },
+    { S(-58,-76), S(-27,-18), S(-15, 28), S(-10, 55), S( -5, 69), S( -2, 82), // Rooks
+      S(  9,112), S( 16,118), S( 30,132), S( 29,142), S( 32,155), S( 38,165),
+      S( 46,166), S( 48,169), S( 58,171) },
     { S(-39,-36), S(-21,-15), S(  3,  8), S(  3, 18), S( 14, 34), S( 22, 54), // Queens
       S( 28, 61), S( 41, 73), S( 43, 79), S( 48, 92), S( 56, 94), S( 60,104),
       S( 60,113), S( 66,120), S( 67,123), S( 70,126), S( 71,133), S( 73,136),
@@ -211,9 +211,9 @@ namespace {
   const int KingAttackWeights[PIECE_TYPE_NB] = { 0, 0, 78, 56, 45, 11 };
 
   // Penalties for enemy's safe checks
-  const int QueenCheck  = 810;
-  const int RookCheck   = 888;
-  const int BishopCheck = 400;
+  const int QueenCheck  = 780;
+  const int RookCheck   = 880;
+  const int BishopCheck = 435;
   const int KnightCheck = 790;
 
   // Threshold for lazy and space evaluation
@@ -425,11 +425,11 @@ namespace {
         // attacked and undefended squares around our king and the quality of
         // the pawn shelter (current 'score' value).
         kingDanger =        ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]
-                    + 103 * ei.kingAdjacentZoneAttacksCount[Them]
-                    + 190 * popcount(undefended)
-                    + 142 * (popcount(b) + !!pos.pinned_pieces(Us))
-                    - 810 * !pos.count<QUEEN>(Them)
-                    -   6 * mg_value(score) / 5 - 5;
+                    + 102 * ei.kingAdjacentZoneAttacksCount[Them]
+                    + 201 * popcount(undefended)
+                    + 143 * (popcount(b) + !!pos.pinned_pieces(Us))
+                    - 848 * !pos.count<QUEEN>(Them)
+                    -  28 * mg_value(score) / 25 - 5;
 
         // Analyse the safe enemy's checks which are possible on next move
         safe  = ~pos.pieces(Them);