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Attack on the uncastled king: pawn to a4 (b3·3)

c9-00970
Puzzle rating: 1080Theme: 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

12. bxa4 Nf6 13. Bxb4 Bb7 14. Bc4

Why it works

  • Great move! pawn to a4 keeps the pressure (+6.3).
  • Spot on — bishop to b4 (+5.8).
  • Precise: bishop to c4 is the top choice (+5.6).
  • You win a piece — the rook.
  • If instead Nf6, then Nf3 and you win the rook.

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