illegal move/ hack?

It wasn't an illegal move.
If you look at the game score, you can see a little "i" next to the 37th move.
If you had clicked it, it would have told you about "en passant" captures.
https://www.chess.com/terms/en-passant
It wasn't an illegal move.
If you look at the game score, you can see a little "i" next to the 37th move.
If you had clicked it, it would have told you about "en passant" captures.
yup