Winning blow: queen to d3 (h3·2)
c9-10108naming 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.
A piece strikes across the board from its Chess960 starting square.
Winning tactic: there is a move that gains a decisive advantage — find it.
Difficulty 1890 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.
From some Chess960 setups a bishop or queen rakes a long diagonal straight from move one. Trace those long-range lines into the enemy camp: a single opened file or diagonal can create an immediate pin, skewer or mating threat.
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 d1, queen h3, rook c1 g1, bishop b1 e1, knight h1 a5, pawn a2 b2 d2 e2 f2 g4 h4 c5.
Black: king c8, queen f8, rook d8 g8, bishop b8 e8, knight a8 h8, pawn h5 b6 f6 g6 a7 c7 d7 e7.
16 white and 16 black pieces are on the board; the puzzle position arises after move 8.
The position in numbers
Material is level — 39 points of pieces on each side (pawn = 1, knight and bishop = 3, rook = 5, queen = 9).
The white king stands on d1, the black king on c8.
It is White to move on move 8, with 42 legal replies to weigh — only the line that keeps the advantage solves the puzzle.
White keeps 8 pawns, Black 8. No file is fully open, so the heavy pieces have to be pried in.
The White king has 2 empty squares to step to right now — the fewer they are, the closer a mating net.
Solution & explanation
Main line
8. Qd3 d5 9. c6 Bxc6 10. Qa6+ Kd7 11. Nxc6
Why it works
- Great move! queen to d3 keeps the pressure (+6.6).
- pawn to c6 develops smoothly.
- Precise: queen to a6 is the top choice (+6.5).
- Great move! knight to c6 keeps the pressure (+6.6).
- You win decisive material (+6.6).
- If instead d5, then c6 and you stay on top.
Move by move
- 8. Qd3 — queen to d3
- d5 — pawn to d5
- 9. c6 — pawn to c6
- Bxc6 — bishop to c6 (capture)
- 10. Qa6+ — queen to a6 with check
- Kd7 — king to d7
- 11. Nxc6 — knight to c6 (capture)
Types in this puzzle
Long-range opener
From its unusual home square a long-range piece strikes across the board.
The long-range opener: a bishop, rook or queen strikes across the whole board straight from its starting area. In Chess960 the long-range pieces sit on unfamiliar squares, and a single pawn move can uncover a shot deep into the enemy camp. In the opening, trace with your eyes the diagonals and files of every long-range piece — yours and theirs. The mistake is pushing a pawn without checking whose line you have just opened.
Relative pin
A piece shields a more valuable one behind it — moving it loses material.
In a relative pin the piece shields not its king but something valuable behind it, usually the queen. Moving is legal but costly, because the piece behind falls. Look for three units on one line: your long-range piece, a cheaper enemy piece, and an expensive one hiding behind. Beware the classic trap — a relatively pinned piece can still move with check or a bigger threat, so verify before you cash in.
Early queen raid
From an odd starting square the queen raids before defences exist.
The early queen raid: from an odd starting square the queen bursts into the game before any defense exists. In classical chess an early queen sortie gets punished, but in Chess960 it sometimes hits squares that literally no one can defend. The sign: within a move or two the queen reaches an unprotected pawn or piece near the enemy king. First check whether the queen can be chased with tempo — otherwise the raid just loses time.
About this position
These pieces come from starting position #344.
SP-344 · 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 g1, the queen on f1.
Castling long simply swaps the two pieces: the king on d1 and the rook on c1 trade places.
The bishops stand on b1 and e1; their long diagonals reach h7 and a5 once the c- and d-pawns step aside.
The second rank carries 2 pawns with no defender at all: b2, h2.
The setup belongs to the ThroneScout family; read right to left it becomes position 333.
The engine's main line opens with c4.
Morozov Balance Index: 37 of 100 — class C — noticeable edge. Engine evaluation of the starting position: +30 centipawns for White (depth 45, 400 000 000 nodes).
Explore position #344Provenance
Mined from the project's engine self-play games.
Pack 014 · SP-344
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