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Attack on the uncastled king: pawn to b4 (a3·5)

c9-04268
Puzzle rating: 1074Theme: 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

8. axb4 Nxb4 9. Na2 Nc6 10. Qf2

Why it works

  • Best move. pawn to b4 is exactly what the engine plays (+5.1).
  • knight to a2 develops smoothly.
  • A natural move: queen to f2.
  • You reach a winning position (+4.9).
  • If instead Nxb4, then Qf2 and you stay on top.

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