In his games with the Indian youngsters Erigaisi and Praggnanandhaa, the World Champion opted for the Modern Defence with 4...a6 which led to fascinating play.
Erigaisi went for the classical plan with Qd2 and 0-0-0, but timed the central pawn push e4-e5, enabling Black to take over control on the light-squares and eventually build up a massive attack against the white king.
The next day Pragg decided to go for the even sharper 5.h4 and after 5...Nf6 played 6.h5, initiating a powerful exchange sacrifice, which is close to winning for White.
But things are not that simple, and various strong players had difficulties to bring home the full point in this advantageous position and Pragg, too, let Carlsen off the hook.
Exercise: The critical moment. White to play!
Praggnanandhaa - M. Carlsen, Julius Baer GenCup Prelim 2022
Feel free to move the pieces on the live diagram!
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