Chess engines that suck, inspired by Tom7's Elo World
Take an Elo World engine like CCCP. It prioritizes four preferences (in order): checkmate, check, capture, push. What if instead, we wanted to capture first and then check? Or even push before we captured? SuckerChess aims to solve this problem by providing modular chess engines, built on chains of preferences.
git clone https://github.com/alexmingzhang/SuckerChess.git
mkdir SuckerChess/build
cd SuckerChess/build
cmake .. -DCMAKE_BUILD_TYPE=Release
make
To play against an engine, run SuckerChessMainOptimized. Input move names like e4 to play against an engine.
a b c d e f g h
┌───┬───┬───┬───┬───┬───┬───┬───┐
8 │ ♖ │ ♘ │ ♗ │ ♕ │ ♔ │ ♗ │ ♘ │ ♖ │
├───┼───┼───┼───┼───┼───┼───┼───┤
7 │ ♙ │ ♙ │ ♙ │ ♙ │ ♙ │ ♙ │ ♙ │ ♙ │
├───┼───┼───┼───┼───┼───┼───┼───┤
6 │ │ │ │ │ │ │ │ │
├───┼───┼───┼───┼───┼───┼───┼───┤
5 │ │ │ │ │ │ │ │ │
├───┼───┼───┼───┼───┼───┼───┼───┤
4 │ │ │ │ │ │ │ │ │
├───┼───┼───┼───┼───┼───┼───┼───┤
3 │ │ │ │ │ │ │ │ │
├───┼───┼───┼───┼───┼───┼───┼───┤
2 │ ♟ │ ♟ │ ♟ │ ♟ │ ♟ │ ♟ │ ♟ │ ♟ │
├───┼───┼───┼───┼───┼───┼───┼───┤
1 │ ♜ │ ♞ │ ♝ │ ♛ │ ♚ │ ♝ │ ♞ │ ♜ │
└───┴───┴───┴───┴───┴───┴───┴───┘
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -
White to move.
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To run an evolution simulation, run SuckerChessEvolutionOptimized. This pits a bunch of engines against eachother, where losers die and winners create offspring with mutated preference chains. Over time, these will create optimal preference chains.
Organism Wins Draws Losses W/L
0. SCpPM1Ma1 69 109 12 5.75
1. SCpMa1 139 209 32 4.34
2. ExpPDrSCp 152 383 35 4.34
3. SCpPDrExp 42 138 10 4.20
4. PM1SCp 67 487 16 4.19
5. ExpSCp 183 717 50 3.66
6. SCpPM1 40 329 11 3.64
7. SCp 187 893 60 3.12
8. SCp 141 762 47 3.00
9. SCp 186 890 64 2.91
10. ExpPM1SCp 22 160 8 2.75
11. Red 238 807 95 2.51
12. SCpCow 22 158 10 2.20
13. SCpExp 48 309 23 2.09
14. SCp 18 152 20 0.90
15. CapRed 20 143 27 0.74
16. SCpHud 2 181 7 0.29
17. PDr 9 118 63 0.14
18. GenSCpMa1 6 88 96 0.06
19. 3 124 63 0.05