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Attack on the uncastled king: pawn to b7 (c6·8)

c9-17797
Puzzle rating: 1200Theme: Chess960 twist: use the unusual starting setup of the pieces.
a8b7c6d5e4f3g2h1
White to move — find the best continuation

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The tactical motive

Chess960 twist: use the unusual starting setup of the pieces.

White to move — find the best continuation

Solution & explanation

Main line

8. cxb7 Qxa2 9. Kxc1 Qa3+ 10. Kd1 Qa2 11. bxa8=Q

Why it works

  • Great move! pawn to b7 keeps the pressure (+2.5).
  • Spot on — king to c1 (+3.1).
  • A natural move: king to d1.
  • Best move. pawn to a8 is exactly what the engine plays (+1.9).
  • You win a piece — the rook.
  • If instead Qxa2, then Kxc1 and you win the bishop.

About this position

These pieces come from starting position #475.

Explore position #475

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