Winning blow: queen to h5 (d5)
c9-24231naming tag (square·N)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 1430 ShuffleRating — club-player level.
White to move — find the best continuation
Position on the board
White: king g1, queen d5, rook d1, bishop a1 b1, knight a5, pawn f2 g2 f6.
Black: king h7, queen f4, rook e8 f8, bishop a6 a7, knight f7, pawn b4 g6 d7.
9 white and 10 black pieces are on the board; the puzzle position arises after move 26.
Solution & explanation
Main line
26. Qh5+ Qh6 27. Bxg6+ Kg8 28. Bxf7+ Rxf7 29. Qxh6
Why it works
- Great move! queen to h5 keeps the pressure (+5.9).
- Well found: bishop to g6 (+5.9).
- Strong! bishop to f7 is the sharp choice (+6.1).
- Great move! queen to h6 keeps the pressure (+6.1).
- You win a piece — the queen.
- If instead Qh6, then Bxg6+ and you stay on top.
Types in this puzzle
Win the pinned piece
The pinned piece cannot run — attack it again and win it.
A pinned piece cannot flee, which means you can win it outright by attacking it one more time. Count attackers against defenders: if you outnumber them, the piece is yours. The best extra attacker is a pawn, since it costs less than anything it might capture. Do not rush the capture — build up the pressure first, then harvest.
Only move
Everything else loses — find the only move that holds.
An only move is a position where everything loses except one single continuation. You cannot play "by hand" here: run through fundamentally different defenses — run away, block, trade, counterattack — and discard the ones that fail. The hallmark of these puzzles is that the obvious moves lose quickly while the solution often looks strange. First understand exactly what the threat is — then the one saving move reveals itself.
Remove the defender
Capture the guard first — then take what it protected.
Removing the defender is the straightforward plan: capture the guard first, then take what it guarded. Unlike deflection, the defender is not lured away — it is traded off or destroyed on the spot. Stare at the target you crave and ask who defends it, and whether that defender can be profitably eaten. Count the whole capture sequence, not just the first move — the trade must pay off at the end.
About this position
These pieces come from starting position #512.
SP-512 · BastionGuard — A c- or f-file king and two knights on inner files (b–g).
The king starts on f1, the rooks on c1 and h1, the queen on e1.
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.
A bishop starts in the corner on a1: it has a single diagonal, which the b-pawn unlocks, running out to h8.
The pawn on g2 is defended by the king alone — the same soft spot f2 is in the classical setup.
The setup belongs to the BastionGuard family; read right to left it becomes position 543.
The engine's main line opens with c4.
Morozov Balance Index: 83 of 100 — class A — most balanced. Engine evaluation of the starting position: +16 centipawns for White (depth 45, 400 000 000 nodes).
Explore position #512Provenance
Mined from the project's engine self-play games.
Pack 011 · SP-512
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