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

c9-20089
Puzzle rating: 1150Theme: 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

18. O-O-O+ Ke7 19. Rd7+ Ke8 20. Rxg7+

Why it works

  • Great move! king to c1 keeps the pressure (+12.6).
  • Well found: rook to d7 (+13.1).
  • Precise: rook to g7 is the top choice (+13.4).
  • You win a piece — the bishop.
  • If instead Kc8, then Bxb7+ and you win the bishop.

About this position

These pieces come from starting position #566.

Explore position #566

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