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Attack on the uncastled king: bishop to a4 (d1·6)

c9-06247
Puzzle rating: 1050Theme: 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+ Kf7 13. Qxf4+ Kg8 14. O-O

Why it works

  • Great move! bishop to a4 keeps the pressure (+3.8).
  • Spot on — queen to f4 (+3.9).
  • Precise: king to g1 is the top choice (+3.5).
  • You win a piece — the knight.
  • If instead Bd7, then Nd5 and you win the knight.

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