In a recent Thames Valley League match my teammate Chris White managed to win a game against an opponent graded 173 in only ten moves.
Here’s how it went.
1. e4 e5
2. Nf3 Nc6
Chris is playing a reverse Philidor, which doesn’t seem the most likely place to find a ten-mover. Still, you never know.
4. d3 d5
5. Nbd2 dxe4
This seems rather obliging. Bc5 and Be7 are more challenging options.
6. dxe4 Bg4
Again he might have preferred Bc5 here.
7. c3 Bd6
8. h3 Bh5
Chris wants to put a knight on f5 (a knight on the rim isn’t dim if it’s on its way somewhere else) but he has to calculate this accurately.
A familiar tactic, apparently winning a pawn, but Chris has it all worked out.
Now Black, to his credit, realised that he was losing a piece and resigned without waiting to be shown:
Or 10… Qxh4 11. Nxd6+
11. Qxe2 Qxh4
And Black’s queen is trapped.
This is a quiescence error. Black thinks the position after Qxh4 is quiescent (there’s nothing immediate happening) but it isn’t. You have to look at all forcing moves before deciding a position is quiescent and stopping your analysis.
This seemed to be a relatively unusual idea, although I’d remembered seeing this game in Chernev’s 1000 Best Short Games of Chess.
I did a quick search on MegaBase 2018 and found several other examples. The game between Roberto Diaz Garcia (2037) and Leandro Jimenez Jimenez (1974) played in the Championship of the Dominican Republic last May, was almost a repeat of Busvine-Birnberg, the only difference being that White had played O-O rather than Nf1.
A few more examples of the same queen trap. This one’s from a very different opening and has happened more than once. 8. dxe5 would have been OK for White.
Even fairly strong players seem to miss this idea.
The final example features a very different setting, but the queen still gets trapped in the same way.
So there are two tactical ideas you might want to learn. If your opponent plays Nh5 you can sometimes win a pawn using a discovered attack: Nxe5 followed by Qxh5. But you must make sure your queen isn’t going to be trapped as a result. The general idea of trapping a queen in this way is also worth remembering.