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Bobby Fischer vs Boris Spassky · 1972 · move 20.

How should White challenge the centre after Black’s pawn structure changes?

In the sixth game of the 1972 world championship in Reykjavík, Bobby Fischer used a quiet opening to reach a position of lasting pressure against Boris Spassky. The lesson is how structural weaknesses, active rooks and well-timed pawn breaks reinforce one another.

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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