Winning blow: rook to f1 (c1·2)
c9-13950naming 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 g1, queen b2, rook c1, bishop a1 c2, knight d4 e4, pawn g2 h2 d3 a4 b4 e5.
Black: king g8, queen e8, rook f1 b8, bishop e6 d8, knight c5 g6, pawn b6 h6 a7 c7 g7.
13 white and 13 black pieces are on the board; the puzzle position arises after move 24.
The position in numbers
Black are ahead by 4 points of material (32 against 36; 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 g8.
It is White to move on move 24, with 2 legal replies to weigh — only the line that keeps the advantage solves the puzzle. White are in check right now, so every reply must answer the check.
White keeps 6 pawns, Black 5. Files fully open (no pawns of either colour): 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
24. Rxf1 Bg5 25. Nxg5 hxg5 26. Qc3 Nf4 27. bxc5
Why it works
- Great move! rook to f1 keeps the pressure (+4.2).
- Spot on — knight to g5 (+4.1).
- Precise: queen to c3 is the top choice (+3.7).
- Best move. pawn to c5 is exactly what the engine plays (+4.0).
- You win a piece — the rook.
- If instead Bg5, then Nxg5 and you win the rook.
Move by move
- 24. Rxf1 — rook to f1 (capture)
- Bg5 — bishop to g5
- 25. Nxg5 — knight to g5 (capture)
- hxg5 — pawn to g5 (capture)
- 26. Qc3 — queen to c3
- Nf4 — knight to f4
- 27. bxc5 — pawn to c5 (capture)
Types in this puzzle
Winning blow
Find the strike that wins material by force.
A winning blow is a forced material gain that does not fit a single textbook motif. The general tactical recipe applies: spot loose pieces, an awkwardly placed king, overloaded lines. Go through the forcing moves in order of violence — checks, captures, threats — because most combinations start with one of them. Do not judge by feel: calculate the concrete line until the outcome is beyond doubt.
About this position
These pieces come from starting position #325.
SP-325 · BastionScout — A c- or f-file king with at least one knight out on the edge.
The king starts on f1, the rooks on b1 and g1, the queen on e1.
Castling short simply swaps the two pieces: the king on f1 and the rook on g1 trade places.
The bishops stand on c1 and d1; their long diagonals reach h6 and h5 once the d- and e-pawns step aside.
The second rank carries 2 pawns with no defender at all: a2, h2.
The setup belongs to the BastionScout family; read right to left it becomes position 346.
The engine's main line opens with f4.
Morozov Balance Index: 47 of 100 — class C — noticeable edge. Engine evaluation of the starting position: +27 centipawns for White (depth 46, 400 000 000 nodes).
Explore position #325Provenance
Mined from the project's engine self-play games.
Pack 008 · SP-325
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