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Peter Svidler vs Peter Leko · 2005 · move 22.

Which b-pawn advance attacks the knight on a5?

Svidler’s win over Leko at the 2005 world championship tournament begins with a Ruy Lopez structure and develops into a sequence of active piece moves. A pawn advance drives away a knight, the remaining rook changes its route, and White’s knight reaches c6. The final rook entry works together with those earlier improvements.

Before reaching for a move, identify the opponent’s immediate threat and the piece you most want to improve. Then compare checks, captures and quiet moves. The complete interactive lesson will let you test your answer without revealing the historical continuation first.

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