My understanding is a minimum number of moves must be made in order for a rating change to occur. I have seen different answers in the forums regarding the exact number of moves; usually people say 3 or 4 moves. There must be some authoritative source on the site somewhere, but I cannot find it.
You achieved checkmate on White's third move. Perhaps this is why no rating change occurred.
Hello,
I just now played a game on live chess that ended with what was basically a scholar's mate. However, after this short mate, there was no rating change for me regardless of the fact that I won the game. I feel like that shouldn't be the case and I'm posting this topic here to point out this possible bug.
If on the other hand this is a feature that it supposed to be there, please aware me of that (and possibly point out the reason for it).