How to Checkmate With King and Queen
Mate in 10 or fewer, if you dodge the one trap
To checkmate with king and queen, use the queen to box the enemy king in and push it to the edge, then bring your own king up and mate on the edge. The trick is to keep the queen a knight's move from the enemy king: it drives him back toward the edge without ever giving check. It is a forced mate in at most 10 moves, and it has exactly one danger: stalemate.
Updated
Play this ending (free)White to play and mate. The queen boxes the king toward the edge; the white king walks up to finish. The animation plays the fastest mate; the knight's-move method below wins without a single check.
The box method, step by step
1. Build the box. Place your queen a knight's move away from the enemy king. From that distance the queen fences the king into a rectangle without giving check.
2. Shrink it. Each time the king moves, mirror it with the queen and re-establish the knight's-move distance. Move by move, this herds the king toward the edge of the board.
3. Freeze the queen, bring your king. Once the enemy king is trapped on the edge shuffling between two or three squares, stop moving the queen entirely and march your own king up until it stands two squares from the enemy king, facing it (directly, or diagonally adjacent to the mating square).
4. Mate on the edge. Slide the queen in: either right in front of the king, protected by yours, or along the last rank. With the black king on e8, your king on e6 and your queen on c7, both Qe7# and Qc8# are mate.
The stalemate trap
The knight's-move chase has one moment of danger: when the defending king reaches a corner region, a queen sitting a knight's move away can take away every square while giving no check: instant stalemate, instant draw. The classic picture: black king on a8, white queen on c7 (or b6). Black is not in check and has no move.
The fix is built into good technique: once the king is confined to the edge, the queen's job is done: stop “improving” it. If you ever notice the defending king has only one square left and it isn't mate yet, give it air. You have a queen; you can afford one quiet king move. You can never afford a stalemate.
Play it against perfect defense
A perfect defender does two things: it runs for the center for as long as possible (maximizing your move count), and it dives toward the stalemate corners the moment your queen gets careless. Practicing against a defense that never cooperates teaches you the rhythm (queen herds, king walks, queen mates) until you can bang it out in seconds.
Questions
How many moves does the king and queen mate take?
At most 10 moves from any legal winning position, with perfect play. In practice 15–20 sloppy moves is fine too; the 50-move rule is never a real constraint here. Stalemate is the only genuine danger.
Can a queen checkmate without her king?
No. A queen alone can force the enemy king to the edge but can never deliver mate without help: every mating position needs the attacking king (or another piece) to cover the escape squares next to the enemy king.
How do you checkmate with two queens?
Even more simply: the two queens ladder-check on alternating ranks like the two-rook mate, no king help needed. The only care required is stalemate: with that much force, always confirm the defender still has a legal move.
How do I avoid stalemate in the queen endgame?
Keep the queen a knight's move from the enemy king while herding, and stop moving the queen once the king is confined to the edge. Before each quiet move, confirm the defender still has at least one legal reply.
Don't just read it, play it
Every position below is playable right now, free, no signup, against an opponent that never gives up and explains every mistake.
Practice all 8 checkmates positionsFollow the full curriculum (free)or sharpen these endings in rated drills