Robert Ris: "Back in 2005 Veselin Topalov became the new World Champion in San Luis, Argentina. People will definitely remember his amazing knight sacrifice on f3 in the Sicilian Najdorf with 6.Be3 Ng4, which enabled him to defeat Peter Svidler with the Black pieces. Now, exactly 20 years later on the same soil, his former second Ivan Cheparinov went with the Black pieces for the exact same variation against Alexey Shirov. In a theoretical position Shirov spent 65 minutes(!) on his move 21.Qxd6 after which Cheparinov directly made the decisive mistake, allowing Mr. Fire on the Board to finish off the game in style! "
Exercise: White to play and win!
Feel free to move the pieces on the live diagram!
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