ONE BRILLIANT MOMENT
Pause. Look.
Find your idea.
Viktor Korchnoi vs Efim Geller · 1971 · move 21.
Which bishop move attacks the knight on d7?
This short 1971 Candidates quarterfinal game builds its pressure quietly. Korchnoi moves a knight backward, places the bishop on a more active diagonal and adds the queen to the attack on c5. The final capture illustrates why a defended pawn must be assessed against the coordination of every attacking piece.
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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