Heimdall 1.5.1 - new version chess engine
Heimdall - UCI chess engine written in Nim.
Author: Mattia Giambirtone Rating CEDR=3644
More info
Heimdall is available on Lichess under its old name (Nimfish), feel free to challenge it! I try to keep the engine running on there always up to date with the changes on the master branch
More info
Heimdall is available on Lichess under its old name (Nimfish), feel free to challenge it! I try to keep the engine running on there always up to date with the changes on the master branch
Github: https://github.com/nocturn9x/heimdall
Heimdall - what's new?
A lot of nitty-gritty performance stuff found by GPT 6 Astra (thanks OpenAI!), a shiny new threat inputs network (many many thanks to @swedishchef for helping me with that!) and a lot of other minor things. Can't really be arsed to write a changelog, nobody reads those anyway. Just read the commits if you're interested!
One important note is that heimdall now releases with universal binaries! I won't claim to have the brains to understand most of the logic that goes into that (I shamelessly vibecoded that part, deal with it), but it should simplify testing quite a bit. See here for details!
Strength
UHO_Lichess_4852_v1.epd
STC
Name | 1.5.1
Elo | 36.18 +- 9.32 (95%)
Conf | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 2014 / 2000 W: 656 L: 447 D: 911
Penta | [16, 196, 400, 353, 42]
https://chess.n9x.co/test/8482/
LTC
Name | 1.5.1
Elo | 32.76 +- 8.00 (95%)
Conf | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 2000 / 2000 W: 585 L: 397 D: 1018
Penta | [3, 171, 474, 339, 13]
One important note is that heimdall now releases with universal binaries! I won't claim to have the brains to understand most of the logic that goes into that (I shamelessly vibecoded that part, deal with it), but it should simplify testing quite a bit. See here for details!
Strength
UHO_Lichess_4852_v1.epd
STC
Name | 1.5.1
Elo | 36.18 +- 9.32 (95%)
Conf | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 2014 / 2000 W: 656 L: 447 D: 911
Penta | [16, 196, 400, 353, 42]
https://chess.n9x.co/test/8482/
LTC
Name | 1.5.1
Elo | 32.76 +- 8.00 (95%)
Conf | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 2000 / 2000 W: 585 L: 397 D: 1018
Penta | [3, 171, 474, 339, 13]
Heimdall 1.5.0 vs other engines:
| Fritz 21 | 16/32 | +0 | 32 games |
| Raphael 4.2.0 | 8.5/19 | -2 | 19 games |
| Renegade 1.3.0 JA | 7.5/19 | -4 | 19 games |
| Triumviratus 5.0 | 7/19 | -5 | 19 games |
| Rose 1.0.0 | 8/17 | -1 | 17 games |
| Chess System Tal 2.07 E1019 | 8/14 | +2 | 14 games |
| PZChessBot 7.1 | 5/12 | -2 | 12 games |
| Cool Iris 16 | 4.5/12 | -3 | 12 games |
| Viridithas 20.0.0 | 4.5/12 | -3 | 12 games |
| Sapling 1.2.7 | 8/11 | +5 | 11 games |
| Avalanche 3.0.0 | 8/11 | +5 | 11 games |
| Stockfish dev-20260625 | 3/10 | -4 | 10 games |
| Rebel 16.3 | 4/8 | +0 | 8 games |
| Hobbes 2.1 | 3/8 | -2 | 8 games |
| Icarus 1.1 JA | 2.5/8 | -3 | 8 games |
| Halogen 16.5.0 | 2.5/8 | -3 | 8 games |
| Clover 9.1 JA | 2.5/8 | -3 | 8 games |
| PlentyChess 8.0.0 | 2.5/8 | -3 | 8 games |
| Astra 7.0 | 2/8 | -4 | 8 games |
| Prune 4.0.0 | 6/6 | +6 | 6 games |
| Berserk 14 JA | 2.5/6 | -1 | 6 games |
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