Mate in 3: rook to f4
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The tactical motive
Mate in 3: a forced sequence that ends in checkmate.
Difficulty 1312 ShuffleRating — club-player level.
Black 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 g4, rook d1 c7, pawn a2 b2 d3 c4 e4.
Black: king g8, rook f3 f8, pawn c5 e5 g6 a7 b7.
8 white and 8 black pieces are on the board; the puzzle position arises after move 39.
The position in numbers
Material is level — 15 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on g4, the black king on g8.
It is Black to move on move 39, with 25 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): f, h — natural highways for the rooks and queen. Half-open for Black: d.
The Black king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
39... R8f4+ 40. Kg5 Rg3+ 41. Kh6 Rh4#
Why it works
- Great move! rook to f4 keeps the pressure (#2).
- Well found: rook to g3 (#1).
- Strong! rook to h4 is the sharp choice (#).
- The line ends in a forced mate in 3.
- If instead Kg5, then Rg3+ and you stay on top.
Move by move
- 39… R8f4+ — rook to f4 with check
- 40. Kg5 — king to g5
- Rg3+ — rook to g3 with check
- 41. Kh6 — king to h6
- Rh4# — rook to h4 and it is checkmate
Types in this puzzle
Ladder mate
Two heavy pieces climb line by line, cutting off every retreat.
The ladder mate uses two heavy pieces climbing rung by rung: one cuts the king off along a line, the other checks on the next line, driving him toward the edge. It is the classic two-rook technique — check, the king retreats one rank, the other rook checks, until mate on the last rank. The only danger is the king creeping close enough to attack one of your rooks. If it does, simply slide that rook to the far side of the same line.
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.
Rook endgame
The most common endgame — activity decides everything.
The rook endgame is the most common of all: rooks and pawns on the board. Its first law is activity — a rook behind a passed pawn beats a rook passively babysitting one. The sign of a correct plan is that your rook is attacking something, not guarding something. The typical error is locking your rook into defense: it is often better to give up a pawn and keep your rook and king active.
Provenance
Derived from the Lichess puzzle database (CC0).
Verified by Stockfish at depth 20+.
Solution forcedness confirmed (verified).
Pack 009
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