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Attack on the uncastled king: pawn to b3 (c2·7)

c9-03493
Puzzle rating: 1052Theme: 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

10. cxb3 O-O-O 11. b4 Nxe5 12. Nxe5

Why it works

  • Great move! pawn to b3 keeps the pressure (+4.8).
  • pawn to b4 develops smoothly.
  • Precise: knight to e5 is the top choice (+4.8).
  • You win a piece — the bishop.
  • If instead O-O-O, then b4 and you win the bishop.

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