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Attack on the uncastled king: bishop to a4 (d1·9)

c9-07223
Puzzle rating: 1066Theme: 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

7. Bxa4 b5 8. Bc2 bxc4 9. O-O

Why it works

  • Great move! bishop to a4 keeps the pressure (+5.1).
  • bishop to c2 develops smoothly.
  • A natural move: king to g1.
  • You reach a winning position (+4.8).
  • If instead b5, then Bb3 and you win the bishop.

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