RustyKnight 2.2 - new version chess engine

RustyKnight, a simple UCI rust chess engine

Author: Nishu219

RustyKnight is a Rust-based chess engine designed for speed and clarity, implementing solid evaluation heuristics and advanced search techniques. 

RustyKnight 2.2 what's new?

What's Changed

Delta pruning by @Nishu219 in #6

Clear Pawn and Material Hash upon ucinewgame by @Nishu219 in #8

CounterMove-Heuristic by @Nishu219 in #10

Update space evaluation logic by @google-labs-jules[bot] in #11

Refactor history heuristic by @Nishu219 in #12

Refactor search stats, add contempt UCI option, and fix seldepth by @Nishu219 in #13

Refactor piece values by @Nishu219 in #14

Refactor lmr formula by @Nishu219 in #15

Refactor to not use Mutex by @Nishu219 in #16

Implements Capture history by @Nishu219 in #18

Search enhancements by @Nishu219 in #19

Implement: go depth 'n' UCI command by @Nishu219 in #20

Full Changelog: v2.1...v2.2

Score of RustyKnightv2.2 vs RustyKnightv2.1: 662 - 124 - 214 [0.769]

RustyKnightv2.2 playing White: 322 - 62 - 116 [0.760] 500

RustyKnightv2.2 playing Black: 340 - 62 - 98 [0.778] 500

White vs Black: 384 - 402 - 214 [0.491] 1000

Elo difference: 208.9 +/- 21.4, LOS: 100.0 %, DrawRatio: 21.4 %

Time control: 60/20

RustyKnight 2.2 vs other engines:

Halogen 15.8.0	0/8	-8	8 games
EveAnn 3.5	0/8	-8	8 games
Shallow 5 dev.8483 JA	0/8	-8	8 games
Dog 4.10	0.5/6	-5	6 games
Clovis III dev.5d50 JA	0/6	-6	6 games
Tuna 1.0.0 JA	0.5/4	-3	4 games
Reckless 0.9.0 JA	0/4	-4	4 games
Crab 4.6.3 JA	0/4	-4	4 games
Arasan 25.2 JA	0/4	-4	4 games
Critter 1.6a	0/4	-4	4 games
ShashChess 39.1 JA	0/4	-4	4 games
Eubos 4.2 JA	0.5/2	-1	2 games
Petrel 2.1 JA	0/2	-2	2 games
Obsidian dev-16.15 SE	0/2	-2	2 games
Princhess 0.21.0	0/2	-2	2 games
Raid 4.7	0/2	-2	2 games
SF-POLY 071025	0/2	-2	2 games
Pounce release-20251013-v3	0/2	-2	2 games
PlentyChess 7.0.2	0/2	-2	2 games
K2 1.0 alpha dev.9b2a JA	0/2	-2	2 games
Corchess 20251005	0/2	-2	2 games

RustyKnight 2.2 download