kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-04-30 16:53:09 +00:00
Code Issues Releases Wiki Activity

Retire CenterBind

Browse source 
And compensate in the PSQT.

STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 27714 W: 5161 L: 5052 D: 17501

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 36354 W: 5008 L: 4909 D: 26437

Bench: 8603285

Resolves #556
This commit is contained in:
lucasart 2016-01-02 09:10:12 +08:00 • committed by Joona Kiiski
parent 1de97337c2
commit aa31f7f096
2 changed files with 3 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/pawns.cpp
View file

@ -59,9 +59,6 @@ namespace {
S( 0, 0), S( 0, 0), S(0, 0), S(0, 0),
S(20, 20), S(40, 40), S(0, 0), S(0, 0) };
// Center bind bonus, when two pawns controls the same central square
const Score CenterBind = S(16, 0);
// Weakness of our pawn shelter in front of the king by [distance from edge][rank]
const Value ShelterWeakness[][RANK_NB] = {
{ V( 97), V(21), V(26), V(51), V(87), V( 89), V( 99) },
@ -103,10 +100,6 @@ namespace {
const Square Right = (Us == WHITE ? DELTA_NE : DELTA_SW);
const Square Left = (Us == WHITE ? DELTA_NW : DELTA_SE);
const Bitboard CenterBindMask =
Us == WHITE ? (FileDBB | FileEBB) & (Rank5BB | Rank6BB | Rank7BB)
: (FileDBB | FileEBB) & (Rank4BB | Rank3BB | Rank2BB);
Bitboard b, neighbours, doubled, supported, phalanx;
Square s;
bool passed, isolated, opposed, backward, lever, connected;
@ -198,9 +191,6 @@ namespace {
b = e->semiopenFiles[Us] ^ 0xFF;
e->pawnSpan[Us] = b ? int(msb(b) - lsb(b)) : 0;
b = shift_bb<Right>(ourPawns) & shift_bb<Left>(ourPawns) & CenterBindMask;
score += CenterBind * popcount<Max15>(b);
return score;
}

6
src/psqt.cpp
View file

@ -34,9 +34,9 @@ const Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
{ S( 0, 0), S( 0, 0), S( 0, 0), S( 0, 0) },
{ S(-19, 5), S( 1,-4), S( 7, 8), S( 3,-2) },
{ S(-26,-6), S( -7,-5), S( 19, 5), S(24, 4) },
{ S(-25, 1), S(-14, 3), S( 16,-8), S(31,-3) },
{ S(-14, 6), S( 0, 9), S( -1, 7), S(17,-6) },
{ S(-14, 6), S(-13,-5), S(-10, 2), S(-6, 4) },
{ S(-25, 1), S(-14, 3), S( 20,-8), S(35,-3) },
{ S(-14, 6), S( 0, 9), S( 3, 7), S(21,-6) },
{ S(-14, 6), S(-13,-5), S( -6, 2), S(-2, 4) },
{ S(-12, 1), S( 15,-9), S( -8, 1), S(-4,18) },
{ S( 0, 0), S( 0, 0), S( 0, 0), S( 0, 0) }
},