So I played someone who seemed a bit below my level and blundered mate-in-one. They challenged a rematch and I accepted (free rating points?).. I did not play particularly well, especially after blundering my bishop, then losing the exchange. Some moves in the middle game seemed pretty suspect.. strange moves that were top or excellent, and they had relatively even timing even with an obvious winning advantage.

Anyway.. I only kept playing once I was down to only my king to see if they’d play human-like moves (gobbling pawns) or cheater moves (perfect mating net completion).. it seems that they definitely were playing on their own at the end (figuring it would be easy)… but then… (see for yourself).

https://www.chess.com/game/165391510354