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Winning blow: bishop to d6 (c5·6)

Shuffle Rating 1510Theme: 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 1510 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 b1, queen a6, rook a1, bishop c5, knight g6, pawn a2 b2 c2 g4 h4.

Black: king c7, bishop g8, knight d7, pawn a4 e4 h5.

10 white and 6 black pieces are on the board; the puzzle position arises after move 32.

The position in numbers

White are ahead by 16 points of material (25 against 9; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.

The white king stands on b1, the black king on c7.

It is White to move on move 32, with 41 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 5 pawns, Black 3. Files fully open (no pawns of either colour): d, f — natural highways for the rooks and queen. Half-open for White: e.

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

32. Bd6+ Kd8 33. Qa8+ Nb8 34. Qxb8+

Why it works

  • Best move. bishop to d6 is exactly what the engine plays (#5).
  • Spot on — queen to a8 (#4).
  • Precise: queen to b8 is the top choice (#3).
  • You win a piece — the knight.
  • If instead Kd8, then Qa8+ and you stay on top.

Move by move

  • 32. Bd6+ — bishop to d6 with check

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 #911.

SP-911 · RampartGuard — A wing king (b/g) with no knight on the a- or h-file.

The king starts on b1, the rooks on a1 and d1, the queen on c1.

From b1 the king makes the longest journey Chess960 allows when castling short: five squares to g1.

A bishop starts in the corner on h1: it has a single diagonal, which the g-pawn unlocks, running out to a8.

One second-rank pawn starts with no defender at all: e2.

The setup belongs to the RampartGuard family; read right to left it becomes position 48.

The engine's main line opens with a4.

Morozov Balance Index: 65 of 100 — class B — balanced. Engine evaluation of the starting position: +22 centipawns for White (depth 45, 400 000 000 nodes).

Explore position #911

Provenance

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

Pack 011 · SP-911

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