Trapping the queen
chess tactical motif

Trapping the queen is a rare tactical motif in chess where a queen, the most powerful piece, is en prise and cannot move to safety or be rescued by another piece. The tactic is similar to a mating net, with the only difference being that the queen is the target, rather than the king.
Trapping a queen almost always occurs when the queen is deep in enemy territory, has limited movement due to being surrounded by many pieces, or both. When a player's queen is successfully trapped, it usually results in their immediate resignation, as losing the queen without significant compensation is almost invariably fatal in high levels of play.
Examples
The diagram on the right shows a position from the game Alekhine-Rubinstein, San Remo 1930. White plays for trapping the queen, as after the moves (1.Nxd5! cxd5?? 2.Bc7!), Black's queen is lost. In the game, Black did not take the knight and after the sequence (1. Nxd5 Bd6 2.Bxd6 Nxd6 3.Nf4), simply lost a pawn without compensation.
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This entry incorporates text from “Trapping the queen” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.