Stash - UCI chess engine Rating CEDR=3251
Author: Morgan Houppin
Author: Morgan Houppin
Stash is a UCI-compliant chess engine developed from scratch. Preferably used
with a GUI like Arena, CuteChess, Fritz, etc.
Stash supports for now all these UCI options:
Sets the number of cores used for searching a position (defaults to 1).
Hash - sets the hash table size in MB (defaults to 16).
Clear Hash - clears the hash table.
MultiPV - Output the best N lines (principal variations) when searching. Leave at 1 for best performance.
Move Overhead - assumes a time delay of x milliseconds due to network and GUI overheads. Increase it if the engine often loses games on time. The default value of 100 ms should be sufficient for all chess GUIs.
Which binary should I choose ?
The latest release should always be the best. The different architecture builds are:
🖳 64: generic 64-bit build. Should work on all 64-bit processors of your operating system.
🖳 - x86_64: x86_64 build. Same as previous one, but enables use of the prefetch` instruction, which places RAM addresses in cache for faster access. Should work on almost all 64-bit processors.
🖳 - x86_64-modern: same as previous one, but also enables use of the popcnt` (Population Count) instruction. Should work on all > 2006 64-bit processors.
🖳 - x86_64-bmi2: same as previous one, but also enables use of the `pext` (Parallel Bit Extract) instruction. Should work on all AMD processors with Excavator arch or newer, and all Intel processors with Haswell arch or newer.
Individual statistics: Stash 33.0 - 416 games (+145,=132,-139), 50.7 %
Andscacs 0.95092 : 8 (+ 2,= 3,- 3), 43.8 %
Laser 1.7 : 2 (+ 0,= 1,- 1), 25.0 %
Vajolet2 2.8 : 4 (+ 2,= 2,- 0), 75.0 %
Fizbo 2 : 4 (+ 0,= 2,- 2), 25.0 %
Ice4 853 : 4 (+ 3,= 1,- 0), 87.5 %
Fritz 17 : 6 (+ 3,= 1,- 2), 58.3 %
N2 : 2 (+ 2,= 0,- 0), 100.0 %
Raubfisch X48e : 2 (+ 0,= 1,- 1), 25.0 %
Kayra 1.3 : 4 (+ 0,= 1,- 3), 12.5 %
Stockfish 15 : 8 (+ 0,= 0,- 8), 0.0 %
Fisherov 0.98k : 10 (+ 0,= 1,- 9), 5.0 %
BrainLearn 17 : 2 (+ 0,= 1,- 1), 25.0 %
Fisherov 0.98g : 2 (+ 0,= 0,- 2), 0.0 %
Lc0 0.29.0-rc0 : 2 (+ 0,= 0,- 2), 0.0 %
Weiawaga 5.0.0 : 2 (+ 1,= 1,- 0), 75.0 %
Pigeon 1.5.1 fix : 2 (+ 2,= 0,- 0), 100.0 %
Lozza 2.2 : 2 (+ 2,= 0,- 0), 100.0 %
Wasp 5.50 : 8 (+ 1,= 3,- 4), 31.2 %
Rebel 15 : 2 (+ 0,= 1,- 1), 25.0 %
Komodo 13.02 : 8 (+ 0,= 3,- 5), 18.8 %
Arasan 23.3 : 4 (+ 0,= 2,- 2), 25.0 %
Stockfish 030522 : 4 (+ 0,= 0,- 4), 0.0 %
CorChess 060522 : 2 (+ 0,= 0,- 2), 0.0 %
Zahak 10.0 : 12 (+ 1,= 9,- 2), 45.8 %
Hiarcs 15.5 : 10 (+ 0,= 4,- 6), 20.0 %
Caligula 1.0b : 12 (+ 11,= 1,- 0), 95.8 %
Lynx 0.10.0 : 4 (+ 4,= 0,- 0), 100.0 %
Protej 0.6.2 : 3 (+ 3,= 0,- 0), 100.0 %
Orion 0.9 : 8 (+ 3,= 5,- 0), 68.8 %
Rodent NNUE 1.0 : 2 (+ 1,= 1,- 0), 75.0 %
Caissa 0.5 NNUE : 2 (+ 0,= 1,- 1), 25.0 %
Loki 3.5.0 : 2 (+ 2,= 0,- 0), 100.0 %
Avalanche 0.2.2 : 2 (+ 2,= 0,- 0), 100.0 %
Crystallite 1.1a : 2 (+ 0,= 1,- 1), 25.0 %
Black Marlin 5.0 : 2 (+ 0,= 1,- 1), 25.0 %
Avalanche 0.3a : 4 (+ 4,= 0,- 0), 100.0 %
Toga IV : 4 (+ 2,= 2,- 0), 75.0 %
Tucano 10.00 : 2 (+ 1,= 0,- 1), 50.0 %
RofChade 3.0 : 8 (+ 0,= 3,- 5), 18.8 %
Horowitz 2.1 : 4 (+ 4,= 0,- 0), 100.0 %
Fatalii 0.2.0 : 2 (+ 2,= 0,- 0), 100.0 %
Rebel 15x2 : 12 (+ 1,= 6,- 5), 33.3 %
Koivisto 8.7 : 2 (+ 0,= 0,- 2), 0.0 %
Minic 3.19 : 4 (+ 0,= 4,- 0), 50.0 %
StockfishMZ 170522 : 6 (+ 0,= 0,- 6), 0.0 %
ProteusSF RBE 008 : 4 (+ 0,= 1,- 3), 12.5 %
Nalwald 15 : 2 (+ 2,= 0,- 0), 100.0 %
Coiled 1.1 : 2 (+ 1,= 1,- 0), 75.0 %
Colossus 2022a : 10 (+ 9,= 1,- 0), 95.0 %
Berserk 9-dev : 6 (+ 0,= 3,- 3), 25.0 %
Smallbrain 1.2 : 2 (+ 2,= 0,- 0), 100.0 %
CorChess 290522 : 2 (+ 0,= 0,- 2), 0.0 %
Fisherov chess monk 1.1 : 4 (+ 0,= 0,- 4), 0.0 %
Bagatur 3.3 : 5 (+ 3,= 2,- 0), 80.0 %
Stockfish 290522 Ivec : 4 (+ 0,= 1,- 3), 12.5 %
Eggnog 3.0 : 2 (+ 2,= 0,- 0), 100.0 %
Vafra 3.3.2 : 6 (+ 3,= 1,- 2), 58.3 %
Leorik 2.1 : 4 (+ 4,= 0,- 0), 100.0 %
Uralochka 3.35a : 2 (+ 0,= 1,- 1), 25.0 %
Stockfish 290522 : 4 (+ 0,= 0,- 4), 0.0 %
Journeyman 1.4 : 2 (+ 2,= 0,- 0), 100.0 %
Koivisto 8.8 : 2 (+ 0,= 1,- 1), 25.0 %
Koivisto 8.9 : 4 (+ 0,= 1,- 3), 12.5 %
Swordfish 15.2 : 2 (+ 0,= 0,- 2), 0.0 %
Fisherov chess monk SE : 2 (+ 0,= 0,- 2), 0.0 %
Kayra 1.4 : 4 (+ 0,= 1,- 3), 12.5 %
StockfishMZ Iccf 240522 : 2 (+ 0,= 0,- 2), 0.0 %
Deep Shredder 13 : 2 (+ 0,= 2,- 0), 50.0 %
Fat Titz 110122 : 2 (+ 0,= 0,- 2), 0.0 %
Igel 3.1.0 : 2 (+ 0,= 1,- 1), 25.0 %
Counter 4.1 : 10 (+ 7,= 3,- 0), 85.0 %
Journeyman 1.7 : 2 (+ 2,= 0,- 0), 100.0 %
Mayhem 7.3 : 2 (+ 2,= 0,- 0), 100.0 %
Horowitz 2.2 : 2 (+ 2,= 0,- 0), 100.0 %
Halogen 10.22 : 2 (+ 0,= 1,- 1), 25.0 %
DanaSah 9.0 : 8 (+ 6,= 2,- 0), 87.5 %
Combusken 2.0.0 : 2 (+ 1,= 1,- 0), 75.0 %
MrBob 1.1.0 : 8 (+ 1,= 7,- 0), 56.2 %
Marvin 6.0.0 : 8 (+ 2,= 3,- 3), 43.8 %
GreKo 2021.08 NNUE : 4 (+ 0,= 3,- 1), 37.5 %
Weiss 2.0 : 4 (+ 2,= 1,- 1), 62.5 %
Velvet 3.3.0 : 4 (+ 1,= 3,- 0), 62.5 %
Winter 0.9 : 8 (+ 5,= 3,- 0), 81.2 %
Tornado Dec 9 2020 : 8 (+ 2,= 4,- 2), 50.0 %
Invictus r382 : 2 (+ 0,= 2,- 0), 50.0 %
Gargantua 1.0 : 2 (+ 1,= 1,- 0), 75.0 %
Velvet 4.0.1 : 2 (+ 1,= 0,- 1), 50.0 %
Blunder 8.0.0 : 2 (+ 1,= 1,- 0), 75.0 %
Minic 3.24 : 2 (+ 0,= 0,- 2), 0.0 %
Cinnamon 2.5 : 2 (+ 2,= 0,- 0), 100.0 %
FoxSEE 7.36 : 2 (+ 2,= 0,- 0), 100.0 %
Simple Chess 1.1.0 : 2 (+ 2,= 0,- 0), 100.0 %
Roc 1.9 : 10 (+ 3,= 7,- 0), 65.0 %
Nalwald 16 : 2 (+ 1,= 0,- 1), 50.0 %
Roc 2022Aug18 : 2 (+ 1,= 1,- 0), 75.0 %
Velvet 4.1.0 : 6 (+ 2,= 3,- 1), 58.3 %
Mantissa 3.7.2 : 2 (+ 0,= 1,- 1), 25.0 %
Wasp 6.00 : 2 (+ 0,= 1,- 1), 25.0 %
Alexandria 2.4 : 2 (+ 1,= 0,- 1), 50.0 %
Weiss 2.1 dev : 4 (+ 0,= 2,- 2), 25.0 %
Roc 1.9.1 : 2 (+ 0,= 2,- 0), 50.0 %
GreKo 2021.12 : 4 (+ 4,= 0,- 0), 100.0 %
Deep iCE 4.0.853 : 4 (+ 4,= 0,- 0), 100.0 %
Marvin 6.1.0 : 2 (+ 0,= 1,- 1), 25.0 %
gitlab:https://gitlab.com/mhouppin/stash-bot/-/releases/v34.0
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