kate/BadFish
1
0
Fork 0
mirror of https://github.com/sockspls/badfish synced 2025-05-01 09:13:08 +00:00
Code Issues Releases Wiki Activity

Combo of several promising parameter tweaks

Browse source 
Combo of several tuning patches which finished yellow at LTC.

[STC](http://tests.stockfishchess.org/tests/view/5b6ead340ebc5902bdba14ce)
LR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 10668 W: 2445 L: 2239 D: 5984
Elo: 6.25 [1.76,10.69] (95%)

[LTC](http://tests.stockfishchess.org/tests/view/5b6eb50e0ebc5902bdba151f)
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 23761 W: 4155 L: 3923 D: 15683
Elo: 3.02 [0.29,5.67] (95%)

Original patches:
- [Piece values](http://tests.stockfishchess.org/tests/view/5b6d2cc00ebc5902bdba02d5) by Stefano Cardanobile
- [Stat bonus](http://tests.stockfishchess.org/tests/view/5b6adbc90ebc5902bdb9da73) by Stefan Geschwentner
- [Rook on pawn](http://tests.stockfishchess.org/tests/view/5b62a95b0ebc5902bdb961c0) by Mark Tenzer
- [Hanging bonus](http://tests.stockfishchess.org/tests/view/5b5d2fa00ebc5902bdb90855) by Ivan Ilvec
- [ss tweak](http://tests.stockfishchess.org/tests/view/5b58b7240ebc5902bdb89025) by miguel-l

Bench: 4694813
This commit is contained in:
Stefano Cardanobile 2018-08-12 10:02:51 +02:00 • committed by Stéphane Nicolet
parent 348cd5ed74
commit b5581b7779
3 changed files with 6 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/evaluate.cpp
View file

@ -158,7 +158,7 @@ namespace {
constexpr Score BishopPawns = S( 3, 7);
constexpr Score CloseEnemies = S( 6, 0);
constexpr Score CorneredBishop = S( 50, 50);
constexpr Score Hanging = S( 52, 30);
constexpr Score Hanging = S( 57, 32);
constexpr Score HinderPassedPawn = S( 8, 0);
constexpr Score KingProtector = S( 6, 6);
constexpr Score KnightOnQueen = S( 21, 11);
@ -166,7 +166,7 @@ namespace {
constexpr Score MinorBehindPawn = S( 16, 0);
constexpr Score Overload = S( 13, 6);
constexpr Score PawnlessFlank = S( 19, 84);
constexpr Score RookOnPawn = S( 8, 24);
constexpr Score RookOnPawn = S( 10, 30);
constexpr Score SliderOnQueen = S( 42, 21);
constexpr Score ThreatByKing = S( 23, 76);
constexpr Score ThreatByPawnPush = S( 45, 40);

4
src/search.cpp
View file

@ -82,7 +82,7 @@ namespace {
// History and stats update bonus, based on depth
int stat_bonus(Depth depth) {
int d = depth / ONE_PLY;
return d > 17 ? 0 : 33 * d * d + 66 * d - 66;
return d > 17 ? 0 : 29 * d * d + 138 * d - 134;
}
// Skill structure is used to implement strength limit
@ -747,7 +747,7 @@ namespace {
// Step 9. Null move search with verification search (~40 Elo)
if ( !PvNode
&& (ss-1)->currentMove != MOVE_NULL
&& (ss-1)->statScore < 22500
&& (ss-1)->statScore < 23200
&& eval >= beta
&& ss->staticEval >= beta - 36 * depth / ONE_PLY + 225
&& !excludedMove

4
src/types.h
View file

@ -182,9 +182,9 @@ enum Value : int {
VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY,
VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY,
PawnValueMg = 171, PawnValueEg = 240,
PawnValueMg = 175, PawnValueEg = 240,
KnightValueMg = 764, KnightValueEg = 848,
BishopValueMg = 826, BishopValueEg = 891,
BishopValueMg = 815, BishopValueEg = 905,
RookValueMg = 1282, RookValueEg = 1373,
QueenValueMg = 2500, QueenValueEg = 2670,