Winning blow: rook to f8 (f7·3)
c9-25944naming tag (square·N)Opens in the app if installed, otherwise downloads the APK.
The tactical motive
Chess960 twist: use the unusual starting setup of the pieces.
Winning tactic: there is a move that gains a decisive advantage — find it.
Difficulty 1200 ShuffleRating — club-player level.
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.
This position hides a concrete tactic that wins material or mates. Start with the most forcing candidate moves — checks, captures and threats — and calculate each to a clear end before choosing; the winning line is usually the one the opponent cannot meet.
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 g3, queen e7, rook f7, pawn d3 h3.
Black: king b8, queen b2, bishop h1, pawn d4 a6 c6 g6 b7.
5 white and 8 black pieces are on the board; the puzzle position arises after move 34.
The position in numbers
Black are ahead by 1 points of material (16 against 17; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on g3, the black king on b8.
It is White to move on move 34, with 32 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 2 pawns, Black 5. Files fully open (no pawns of either colour): e, f — natural highways for the rooks and queen. Half-open for White: a, b, c, g.
The White king has 3 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
34. Rf8+ Ka7 35. Qc5+ Qb6 36. Ra8+ Kxa8 37. Qxb6
Why it works
- Great move! rook to f8 keeps the pressure (+6.2).
- Well found: queen to c5 (+6.4).
- Strong! rook to a8 is the sharp choice (+6.5).
- Great move! queen to b6 keeps the pressure (+6.5).
- You win a piece — the queen.
- If instead Ka7, then Qc5+ and you stay on top.
Move by move
- 34. Rf8+ — rook to f8 with check
- Ka7 — king to a7
- 35. Qc5+ — queen to c5 with check
- Qb6 — queen to b6
- 36. Ra8+ — rook to a8 with check
- Kxa8 — king to a8 (capture)
- 37. Qxb6 — queen to b6 (capture)
Types in this puzzle
Absolute pin
A piece is pinned against its king — it cannot legally move.
An absolute pin freezes a piece on the line between its own king and your long-range attacker: moving it is simply illegal. The pattern is three units on one straight line — your bishop, rook or queen, an enemy piece, and the enemy king behind it. A pinned piece neither attacks nor defends anything: treat it as if it were off the board. Pile up on it, ideally with a pawn, because running away is against the rules.
Deflection
Force the defender away from its duty — then strike what it guarded.
Deflection forces the guard to leave its post: a sacrifice or exchange drags it away from the piece or square it protects. First find the critical defender — the piece whose absence makes the mate or the material win possible. Then find the move it cannot ignore, which is usually a capture. Do not be stingy: if removing the guard wins the queen or mates, the sacrifice pays for itself many times over.
About this position
These pieces come from starting position #460.
SP-460 · ThroneGuard — A centre-file king with no knight on the edge; a position and its mirror twin always share this family.
The king starts on e1, the rooks on a1 and h1, the queen on f1.
Castling ends where it always does: king to g1 and rook to f1 on the short side, king to c1 and rook to d1 on the long one.
The bishops stand on b1 and g1; their long diagonals reach h7 and a7 once the c- and f-pawns step aside.
The pawn on d2 is defended by the king alone — the same soft spot f2 is in the classical setup.
The setup belongs to the ThroneGuard family; read right to left it becomes position 700.
The engine's main line opens with e4, putting a pawn straight into the centre.
Morozov Balance Index: 59 of 100 — class B — balanced. Engine evaluation of the starting position: +24 centipawns for White (depth 47, 400 000 000 nodes).
Explore position #460Provenance
Mined from the project's engine self-play games.
Pack 008 · SP-460
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