It was a 6th round at the Thursday’s club, my opponent was a boy, never played him before. I had White and we got Sicilian, Kan variation. I didn’t play the exact book moves, but got myself a playable position.
Then after exchange on a4 I got optimistic, thinking that I had an advantage. Actually, I did not. 22. b5 was better than 22. bxa5, I just thought that it would be difficult to defend that pawn.
23. e5 was a serious mistake, I had to switch to defense after that. 29. f5 was another error in judgement, I thought that I have some chances on the kingside, but I had none. Eventually having 6 minutes vs. his 25 I blundered a rook and mate in 1. Anyway my position was -9 at that moment.