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Winning blow: pawn to d6 (c5·3)

Shuffle Rating 920Theme: 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 920 ShuffleRating — for beginners taking their first steps in Chess960 tactics.

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 e3, rook c1 f1, bishop d1, knight f3 g3, pawn e2 g2 h2 a3 d4 c5 f5.

Black: king d8, queen c7, rook b7 e8, bishop d5 d6, knight h8, pawn f6 a7 d7 f7 g7 h7.

14 white and 13 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 (35 against 34; 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 d8.

It is White to move on move 16, with 41 legal replies to weigh — only the line that keeps the advantage solves the puzzle.

White keeps 7 pawns, Black 6. Files fully open (no pawns of either colour): b — natural highways for the rooks and queen.

Black hold the bishop pair, an edge in open lines. 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. cxd6 Rxe3 17. dxc7+

Why it works

  • Great move! pawn to d6 keeps the pressure (+5.4).
  • Spot on — pawn to c7 (+5.2).
  • You win a piece — the queen.
  • If instead Rxe3, then dxc7+ and you win the queen.

Move by move

  • 16. cxd6 — pawn to d6 (capture)
  • Rxe3 — rook to e3 (capture)
  • 17. dxc7+ — pawn to c7 (capture) with check

Types in this puzzle

Discovered attack

A piece steps aside and opens a second attack from the piece behind it.

A discovered attack works like a curtain: one piece steps off the line and unveils the long-range piece behind it. The beauty is that the moving piece can create a second threat of its own — two attacks in one move. Look for your stacked pairs: a bishop or rook behind a knight or pawn, aimed through them at something valuable. Send the front piece to the most aggressive square — a discovery without a second threat wastes half its power.

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.

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 #881.

SP-881 · ThroneScout — King in the middle of the rank, with a knight already committed to the corner.

The king starts on e1, the rooks on b1 and f1, the queen on c1.

The kingside rook already stands on f1, so castling short moves only the king, from e1 to g1.

A bishop starts in the corner on a1: it has a single diagonal, which the b-pawn unlocks, running out to h8.

The second rank carries 3 pawns with no defender at all: a2, g2, h2.

The setup belongs to the ThroneScout family; read right to left it becomes position 75.

The engine's main line opens with b4.

Morozov Balance Index: 59 of 100 — class B — balanced. Engine evaluation of the starting position: +24 centipawns for White (depth 45, 400 000 000 nodes).

Explore position #881

Provenance

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

Verified by Stockfish at depth 20+.

Solution forcedness confirmed (verified).

Pack 004 · SP-881

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