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Attack on the uncastled king: pawn to a7 (a6)

c9-07018
Puzzle rating: 1115Theme: 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

9. a7 Nc6 10. a8=Q

Why it works

  • Great move! pawn to a7 keeps the pressure (+3.6).
  • Well found: pawn to a8 (+3.7).
  • You win decisive material (+3.7).
  • If instead Nc6, then a8=Q and you win the pawn.

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