Mate in 3: rook to f8 (f1·8)
li-01omanaming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Mate in 3: a forced sequence that ends in checkmate.
Difficulty 1946 ShuffleRating — for advanced tacticians.
White to move — find the best continuation
How to recognize this tactic
In a mate in three every move must be forcing; the defender should never get a free tempo. Find the check or threat that herds the king, calculate the single defence to each, and confirm the net closes on the third move.
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 g1, queen e6, rook f1, knight h6, pawn b2 g2 h2 a4 e4 e5.
Black: king h8, queen f8, rook a8, bishop b4, knight b6, pawn e2 c4 a5 g6 b7 g7 h7.
10 white and 12 black pieces are on the board; the puzzle position arises after move 26.
The position in numbers
Black are ahead by 4 points of material (23 against 27; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g1, the black king on h8.
It is White to move on move 26, with 38 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 7. Files fully open (no pawns of either colour): d, f — natural highways for the rooks and queen. Half-open for White: c.
The White king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
26. Rxf8+ Rxf8 27. Qg8+ Rxg8 28. Nf7#
Why it works
- Great move! rook to f8 keeps the pressure (#2).
- Well found: queen to g8 (#1).
- Strong! knight to f7 is the sharp choice (#).
- The line ends in a forced mate in 3.
- If instead Rxf8, then Qg8+ and you win the queen.
Move by move
- 26. Rxf8+ — rook to f8 (capture) with check
- Rxf8 — rook to f8 (capture)
- 27. Qg8+ — queen to g8 with check
- Rxg8 — rook to g8 (capture)
- 28. Nf7# — knight to f7 and it is checkmate
Types in this puzzle
Smothered mate
The king is buried under its own pieces — only a knight can reach it.
The smothered mate suffocates a king buried under its own army: every neighboring square is blocked by friendly pieces, and the knight — needing no open lines — delivers the blow. The classic mechanism: knight check, king hides in the corner, a queen sacrifice forces a rook to plug the last hole, and the knight mates. Look for a cornered king surrounded by its own pieces and a knight one hop away. Do not mourn the queen — she only opens the door.
Mate in 3
A forced checkmate in three moves.
Mate in three is a forced staircase: each of your moves narrows the opponent's choices, and the third one ends the game. Look for the start among checks and sacrifices — quiet first moves are rare in mating problems, but deliciously sneaky. Keep the tree in your head: every defense gets its own branch. Do not stop calculating after move two — see the final mating picture with your own eyes.
Mate defense
Mate is threatened — parry it and stay on top.
Mate defense: your opponent is one move from mating you — but it is your turn, and that changes everything. Find the defense that kills the mating threat while keeping your advantage: often a check or a counter-threat that leaves no time for the mate. First name the exact square where the mate would land — otherwise you are defending blind. The mistake is playing a "defensive" move that does not actually remove the threat.
Provenance
Derived from the Lichess puzzle database (CC0).
Pack 014
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