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Attack on the uncastled king: pawn to b3 (a2·8)

c9-03512
Puzzle rating: 1106Theme: 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

16. axb3 axb3 17. Kh1 O-O 18. Nc3

Why it works

  • Great move! pawn to b3 keeps the pressure (+6.6).
  • king to h1 develops smoothly.
  • Precise: knight to c3 is the top choice (+6.2).
  • You win a piece — the queen.
  • If instead axb3, then Kh1 and you win the queen.

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