Mate in 2: rook to a2 (a8)
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The tactical motive
Mate in 2: the first move creates an unstoppable threat, the second delivers mate.
Difficulty 1655 ShuffleRating — for advanced tacticians.
Black to move — find the best continuation
How to recognize this tactic
Mate in two usually opens with a forcing move — a check, a capture or an unstoppable threat — that strips the king of squares or defenders, so the follow-up mate becomes unavoidable. Look for the first move that leaves the opponent only losing replies.
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 b2, rook d2 b3, knight d3 e3, pawn f2 g2 h3 b4 e4.
Black: king c7, rook a1 a8, knight b6, pawn b5 e5 c6 e6 h6 g7.
10 white and 10 black pieces are on the board; the puzzle position arises after move 32.
The position in numbers
White are ahead by 2 points of material (21 against 19; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on b2, the black king on c7.
It is Black to move on move 32, with 41 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 6. Files fully open (no pawns of either colour): a, d — natural highways for the rooks and queen. Half-open for Black: f.
The Black king has 6 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
32... R8a2+ 33. Kc3 Na4#
Why it works
- Great move! rook to a2 keeps the pressure (#1).
- Well found: knight to a4 (#).
- The line ends in a forced mate in 2.
- If instead Kc3, then Na4# and it is mate.
Move by move
- 32… R8a2+ — rook to a2 with check
- 33. Kc3 — king to c3
- Na4# — knight to a4 and it is checkmate
Types in this puzzle
Knight mate
The knight lands the killing blow from its unique angle.
In a knight mate the final blow comes from the knight — the only piece whose check can never be blocked. That makes it lethal against a cramped king: only a king move or capturing the knight itself can help. The sign: the squares around the king are occupied or covered, and there is a hop from which the knight checks while staying untouchable. Bring the knight over early — it is slower than the long-range pieces, but its strike cannot be parried.
Only move
Everything else loses — find the only move that holds.
An only move is a position where everything loses except one single continuation. You cannot play "by hand" here: run through fundamentally different defenses — run away, block, trade, counterattack — and discard the ones that fail. The hallmark of these puzzles is that the obvious moves lose quickly while the solution often looks strange. First understand exactly what the threat is — then the one saving move reveals itself.
Mate in 2
A forced checkmate in two moves.
Mate in two: your move, any reply, then the mating blow. Start with the most forcing first moves — checks and sacrifices that shrink the opponent's options to almost nothing. Against every single reply you must have a mate ready, so check them all without exception. The common failure is analyzing the pretty defense and forgetting the boring one.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 013
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