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Winning blow: pawn to e7 (d6·8)

Shuffle Rating 1200Theme: Chess960 twist: use the unusual starting setup of the pieces.
White to move — find the best continuation

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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 f1, rook h5, pawn a2 b2 d2 e2 f3 d6.

Black: king f8, queen g4, rook e7, knight f7, pawn g3 a5 b5 e5 d7 g7.

8 white and 10 black pieces are on the board; the puzzle position arises after move 34.

The position in numbers

Black are ahead by 12 points of material (11 against 23; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.

The white king stands on f1, the black king on f8.

It is White to move on move 34, with 24 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 6 pawns, Black 6. Files fully open (no pawns of either colour): c, h — natural highways for the rooks and queen. Half-open for White: 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. dxe7+ Kxe7 35. fxg4 Ke6 36. Kg2 g5 37. Kxg3

Why it works

  • Great move! pawn to e7 keeps the pressure (+3.5).
  • Well found: pawn to g4 (+3.5).
  • A natural move: king to g2.
  • Best move. king to g3 is exactly what the engine plays (+3.8).
  • You win a piece — the queen.
  • If instead Kxe7, then fxg4 and you win the queen.

Move by move

  • 34. dxe7+ — pawn to e7 (capture) with check
  • Kxe7 — king to e7 (capture)
  • 35. fxg4 — pawn to g4 (capture)
  • Ke6 — king to e6
  • 36. Kg2 — king to g2
  • g5 — pawn to g5
  • 37. Kxg3 — king to g3 (capture)

Types in this puzzle

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.

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.

Counter-strike

Don't defend — answer the threat with a bigger one.

The counter-strike: instead of defending against the threat, you answer with a bigger threat of your own. While your opponent grabs a pawn, you deliver mate — the arithmetic favors you. Look for a counter when direct defenses fail: do you have a check, an attack on the queen, a mating threat? The beginner's error is meeting every threat with a reflexive defense without checking the counterattacking resources first.

About this position

These pieces come from starting position #584.

SP-584 · BastionScout — The king starts one file off-centre, on c or f, and a knight begins in a corner.

The king starts on f1, the rooks on c1 and g1, the queen on a1.

Castling short simply swaps the two pieces: the king on f1 and the rook on g1 trade places.

The bishops stand on b1 and e1; their long diagonals reach h7 and a5 once the c- and d-pawns step aside.

One second-rank pawn starts with no defender at all: h2.

The setup belongs to the BastionScout family; read right to left it becomes position 285.

The engine's main line opens with c4.

Morozov Balance Index: 40 of 100 — class C — noticeable edge. Engine evaluation of the starting position: +29 centipawns for White (depth 48, 400 000 000 nodes).

Explore position #584

Provenance

Mined from the project's engine self-play games.

Pack 007 · SP-584

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