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Castling-960 to the rescue on b1 (d1·9)

c9-15432
Puzzle rating: 1340Theme: 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

11. O-O-O d6 12. f6 Rf7 13. Qg2

Why it works

  • Great move! king to c1 keeps the pressure (+2.7).
  • pawn to f6 develops smoothly.
  • Precise: queen to g2 is the top choice (+2.5).
  • You reach a winning position (+2.5).
  • If instead Bc4, then f6 and you stay on top.

About this position

These pieces come from starting position #191.

Explore position #191

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