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Attack on the uncastled king: pawn to b4 (c3·9)

c9-05670
Puzzle rating: 1053Theme: 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. cxb4 axb4 8. Qc5 Ne4 9. Bxe4

Why it works

  • Great move! pawn to b4 keeps the pressure (+4.0).
  • queen to c5 develops smoothly.
  • Precise: bishop to e4 is the top choice (+3.5).
  • You win a piece — the knight.
  • If instead axb4, then Qc5 and you stay on top.

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