The main move.
1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. c1e3  6... e7e5  7. d4f3 The Najdorf is a great opening for Black, and White surely has no advantage anywhere. But, the burden of memorization is extremely high, and there are a ton of lines you need to know. As such, most people jump around a lot with the white pieces and look to poke and prod in different spots. I would know firsthand—I actually beat the Najdorf twice myself in the recently concluded Prague Masters, but I chose a different line the second time around. It surprises me a little that Hikaru repeated the same variation that he played with Firouzja a few days ago, but you can't argue with success $1