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Winning blow: bishop to e3

c9-00457
Shuffle Rating 780Theme: 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 780 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 d1, queen a7, rook b1 f1, bishop c1 h1, knight e1 a5, pawn a2 b2 e2 g2 h2 d3 c4.

Black: king d8, queen g5, rook f7, bishop c8 h8, knight e3, pawn f4 e5 b6 c6 d7 h7.

15 white and 12 black pieces are on the board; the puzzle position arises after move 12.

The position in numbers

White are ahead by 9 points of material (38 against 29; pawn = 1, knight and bishop = 3, rook = 5, queen = 9) — the tactic has to convert or outweigh that.

The white king stands on d1, the black king on d8.

It is White to move on move 12, with 2 legal replies to weigh — only the line that keeps the advantage solves the puzzle. White are in check right now, so every reply must answer the check.

White keeps 7 pawns, Black 6. No file is fully open, so the heavy pieces have to be pried in. Half-open for White: f.

The White king has 1 empty squares to step to right now — the fewer they are, the closer a mating net.

Solution & explanation

Main line

12. Bxe3 fxe3 13. Rxf7 Ke8 14. Rxh7

Why it works

  • Great move! bishop to e3 keeps the pressure (+8.8).
  • Spot on — rook to f7 (+8.9).
  • Precise: rook to h7 is the top choice (+9.3).
  • You win a piece — the rook.
  • If instead fxe3, then Rxf7 and you win the rook.

Move by move

  • 12. Bxe3 — bishop to e3 (capture)

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.

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 #279.

SP-279 · ThroneScout — Centre-file king, rim knight: 204 of the 960 positions share this pattern.

The king starts on d1, the rooks on b1 and f1, the queen on g1.

The kingside rook already stands on f1, so castling short moves only the king, from d1 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: a2.

The setup belongs to the ThroneScout family; read right to left it becomes position 578.

The engine's main line opens with f4.

Morozov Balance Index: 3 of 100 — class D — largest edge. Engine evaluation of the starting position: +51 centipawns for White (depth 46, 400 000 000 nodes).

Explore position #279

Provenance

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

Verified by Stockfish at depth 20+.

Solution forcedness confirmed (verified).

Pack 001 · SP-279

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