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Attack on the uncastled king: pawn to b4 (a3·17)

c9-07787
Puzzle rating: 1058Theme: 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

7. axb4 O-O 8. Bd3 Bb7 9. d5

Why it works

  • Great move! pawn to b4 keeps the pressure (+6.4).
  • Spot on — bishop to d3 (+6.0).
  • A natural move: pawn to d5.
  • You win a piece — the bishop.
  • If instead O-O, then Bxb5 and you win the bishop.

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