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Castling-960 to the rescue on b1 (c1·3)

c9-17896
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

21. O-O-O Bxb4 22. Qb3 Bxc3 23. Bxc3

Why it works

  • Great move! king to c1 keeps the pressure (+2.5).
  • Well found: queen to b3 (+2.3).
  • Precise: bishop to c3 is the top choice (+3.0).
  • You reach a winning position (+3.0).
  • If instead Bxb4, then Qb3 and you stay on top.

About this position

These pieces come from starting position #834.

Explore position #834

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