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Attack on the uncastled king: knight to a3 (b1·7)

c9-06339
Puzzle rating: 1069Theme: 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

6. Nxa3 d5 7. cxd5 O-O-O 8. Bb2

Why it works

  • Great move! knight to a3 keeps the pressure (+5.8).
  • Spot on — pawn to d5 (+5.9).
  • A natural move: bishop to b2.
  • You win a piece — the bishop.
  • If instead d5, then exd5 and you win the bishop.

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