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Attack on the uncastled king: pawn to a4 (b3·2)

c9-00321
Puzzle rating: 1050Theme: 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

15. bxa4 O-O 16. Rb1 e5 17. Bc3

Why it works

  • Great move! pawn to a4 keeps the pressure (+3.7).
  • rook to b1 develops smoothly.
  • A natural move: bishop to c3.
  • You win a piece — the knight.
  • If instead O-O, then c5 and you win the knight.

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