datavorous_

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.

Thanks for pointing it out! I will try to patch it.

Appreciate you taking the time to test it.

none.

scribbling long enough on a piece of paper is more enjoyable than prompting.

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

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