datavorous_
Your harness design is probably bad
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @11:34AM (#47015860)
zero games were thrown away for castling, because i forced stockfish not to castle (and not to play en passant/promotion) by filtering legal moves and only giving those filtered moves via root_moves
so every game stayed in the same no castling variant
and you're right, this rating is for that constrained variant, not full chess.
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @11:21AM (#47015722)
Thanks for pointing it out! I will try to patch it.
Appreciate you taking the time to test it.
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @10:36AM (#47015302)
Oh well, the file initially looked like https://github.com/datavorous/sameshi/blob/7ab4e47144f96becd...
It is hideous now!
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @10:04AM (#47015043)
none.
scribbling long enough on a piece of paper is more enjoyable than prompting.
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @09:56AM (#47014979)
maybe for very low ratings it's plausible?
1 elo per byte might happen in a tiny range
but at a useful strength it would break fast, that's what i think
Re:Show HN: Sameshi – a ~1200 Elo chess engine that fits within 2KB
on Saturday February 14, 2026 @09:41AM (#47014881)
i forced stockfish to play only non castling, non en passant, non promotion moves by filtering legal moves and passing only those as root_moves
also removed castling/EP rights from FEN
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