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Castling-960 to the rescue on a1 (d1·2)

c9-07034
Puzzle rating: 1051Theme: Castling 960: the strongest move is to castle — drag the king onto its rook.
a8b7c6d5e4f3g2h1
White to move — find the best continuation

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The tactical motive

Castling 960: the strongest move is to castle — drag the king onto its rook.

White to move — find the best continuation

Solution & explanation

Main line

10. O-O-O+ Bd7 11. Qxf3 Nef6 12. Qxb7

Why it works

  • Great move! king to c1 keeps the pressure (+3.3).
  • Spot on — queen to f3 (+3.4).
  • Precise: queen to b7 is the top choice (+3.8).
  • You reach a winning position (+3.8).
  • If instead Bd7, then Qxf3 and you stay on top.

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