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Attack on the uncastled king: pawn to b7 (a6·3)

c9-06067
Puzzle rating: 1131Theme: 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

13. axb7 c6 14. bxa8=Q+ Kxa8 15. bxa3

Why it works

  • Great move! pawn to b7 keeps the pressure (+3.9).
  • Spot on — pawn to a8 (+4.3).
  • Precise: pawn to a3 is the top choice (+4.1).
  • You win a piece — the rook.
  • If instead c6, then bxa8=Q+ and you win the rook.

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