Mate in 1: queen to g1 (e3·2)
li-030I0naming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Mate in 1: find the move after which the enemy king has no escape.
Difficulty 1265 ShuffleRating — club-player level.
Black to move — find the best continuation
How to recognize this tactic
A mate in one hides among forcing checks. Run through every check you can give: does it cover all the king's escape squares, is the checking piece safe or supported, and can nothing block or capture it? If yes, that is the mate.
General method: before you move, list the forcing candidates — every check, every capture, every direct threat — and calculate those first. The solution to a tactic is almost always among them.
Position on the board
White: king f1, queen e1, rook b1 f3, bishop g2, pawn e2 a3 d3 c4 b5.
Black: king g7, queen e3, rook e7 f8, bishop g6, pawn h2 c5 d6 f6 h6.
10 white and 10 black pieces are on the board; the puzzle position arises after move 32.
The position in numbers
Material is level — 27 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on f1, the black king on g7.
It is Black to move on move 32, with 48 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 5. Files fully open (no pawns of either colour): g — natural highways for the rooks and queen. Half-open for Black: a, b, e.
The Black king has 4 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
32... Qg1#
Why it works
- Great move! queen to g1 keeps the pressure (#).
- The line ends in a forced mate in 1.
Move by move
- 32… Qg1# — queen to g1 and it is checkmate
Types in this puzzle
Supported queen mate
The queen delivers mate face to face, protected by a friend.
The supported queen mate is the most common pattern of all: the queen lands next to the king and mates because a friendly piece or pawn protects her. The king is helpless — capturing is impossible, and the queen covers every neighboring square herself. Hunt for a protected square beside the enemy king: a knight, bishop or pawn eyeing it turns her invasion into mate. Verify one thing — that the square really is defended, or the king eats her.
Mate in 1
Checkmate in a single move — find it.
Mate in one: the combination is over, only the final precise shot remains. The method is simple — list every check you have and test the three escapes against each: king moves, blocks, and capturing the checker. If none of them works, it is mate. The classic blunder is falling in love with the first check you see and missing the one escape hatch.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 009
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