Winning blow: rook to g1 (h1·7)
c9-17975naming 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 1390 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 e1, queen b1, rook d1 h1, bishop g4, knight c2, pawn a2 b2 f2 c3 h3.
Black: king e7, queen b8, rook d8 h8, knight a8, pawn g2 d5 e5 a7 b7 g7 h7.
11 white and 12 black pieces are on the board; the puzzle position arises after move 16.
The position in numbers
White are ahead by 1 points of material (30 against 29; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.
The white king stands on e1, the black king on e7.
It is White to move on move 16, with 33 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 5 pawns, Black 7. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: d, e, 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
16. Rg1 h5 17. Be2 Nc7 18. Ne3 d4 19. Nxg2
Why it works
- Great move! rook to g1 keeps the pressure (+4.2).
- bishop to e2 develops smoothly.
- A natural move: knight to e3.
- Best move. knight to g2 is exactly what the engine plays (+4.6).
- You reach a winning position (+4.6).
- If instead h5, then Be2 and you stay on top.
Move by move
- 16. Rg1 — rook to g1
- h5 — pawn to h5
- 17. Be2 — bishop to e2
- Nc7 — knight to c7
- 18. Ne3 — knight to e3
- d4 — pawn to d4
- 19. Nxg2 — knight to g2 (capture)
Types in this puzzle
Quiet move
No check, no capture — yet this modest move decides the game.
A quiet move gives no check and takes nothing — yet it decides the game by creating an unstoppable threat or stealing the king's last square. This is the hardest class of moves: the eye hunts for loud blows while a modest shift does the winning. The clue: every forcing try runs into a defense, so seek the move that strengthens the threat or takes squares away. Train yourself to ask: what if I neither capture nor check, but quietly improve?
About this position
These pieces come from starting position #214.
SP-214 · ThroneScout — A knight starts on the edge (a/h) and the king sits centrally on d or e; the mirror twin stays in this family too.
The king starts on e1, the rooks on d1 and h1, the queen on b1.
The queenside rook already stands on d1, so castling long moves only the king, from e1 to c1.
The bishops stand on c1 and f1; their long diagonals reach h6 and a6 once the d- and e-pawns step aside.
The pawn on f2 is defended by the king alone — the classic soft spot of the standard setup.
The setup belongs to the ThroneScout family; read right to left it becomes position 646.
The engine's main line opens with e4, putting a pawn straight into the centre.
Morozov Balance Index: 69 of 100 — class B — balanced. Engine evaluation of the starting position: +21 centipawns for White (depth 46, 400 000 000 nodes).
Explore position #214Provenance
Mined from the project's engine self-play games.
Pack 010 · SP-214
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