Mate in 3: rook to f1
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The tactical motive
Chess960 twist: use the unusual starting setup of the pieces.
Mate in 3: a forced sequence that ends in checkmate.
Difficulty 1630 ShuffleRating — for advanced tacticians.
White to move — find the best continuation
How to recognize this tactic
In Chess960 the pieces start on unfamiliar squares, so tactics appear earlier and from unusual angles. Do not trust classical patterns — read the actual lines of the bishops, the rooks and the queen from where they really stand in this position.
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 e2, queen c5, rook c1 h1, bishop d5, pawn a3 b4 d4 e4 h4 b5.
Black: king f4, queen d7, rook f6 h8, bishop f8, knight b8, pawn h5 g7.
11 white and 8 black pieces are on the board; the puzzle position arises after move 31.
The position in numbers
White are ahead by 1 points of material (28 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 e2, the black king on f4.
It is White to move on move 31, with 44 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 6 pawns, Black 2. Files fully open (no pawns of either colour): c, f — natural highways for the rooks and queen. Half-open for White: g.
The White king has 6 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
31. Rcf1+ Kg4 32. Rfg1+ Kf4 33. Qc1#
Why it works
- Best move. rook to f1 is exactly what the engine plays (#2).
- Spot on — rook to g1 (#1).
- Precise: queen to c1 is the top choice (#).
- The line ends in a forced mate in 3.
- If instead Kg4, then Rfg1+ and you stay on top.
Move by move
- 31. Rcf1+ — rook to f1 with check
- Kg4 — king to g4
- 32. Rfg1+ — rook to g1 with check
- Kf4 — king to f4
- 33. Qc1# — queen to c1 and it is checkmate
Types in this puzzle
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.
About this position
These pieces come from starting position #74.
SP-74 · ThroneScout — The king starts on d or e while at least one knight begins in a corner.
The king starts on d1, the rooks on c1 and h1, the queen on g1.
Castling long simply swaps the two pieces: the king on d1 and the rook on c1 trade places.
The bishops stand on e1 and f1; their long diagonals reach a5 and a6 once the d- and e-pawns step aside.
The second rank carries 2 pawns with no defender at all: a2, b2.
The setup belongs to the ThroneScout family; read right to left it becomes position 885.
The engine's main line opens with d4, putting a pawn straight into the centre.
Morozov Balance Index: 55 of 100 — class B — balanced. Engine evaluation of the starting position: +25 centipawns for White (depth 49, 400 000 000 nodes).
Explore position #74Provenance
Mined from the project's engine self-play games.
Pack 012 · SP-74
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