It was a third round in the Monday’s club, I played the guy who also was at the top of our section. My opponent’s choice to play English Opening was unexpected. A few years ago I would reply with Anglo-Gruenfeld, but I didn’t remember the lines, so played e5. I probably gave him too much space on the queenside, 13… Na5 wasn’t the best move, Nd8 was better.

23… g5 seemed risky to me, but I didn’t want him to have the “e” vertical after 23… f4. Computer suggests playing 33… a4 with the following a6 instead of 33… Qf6, with the idea of opening a “b” line for my rook.

Soon I got worse, also low on time and made a crucial mistake by playing 42… gxf4. I missed that he can take with a knight, creating a threat of fork on e6. Though I flagged in a few moves, it was completely lost.