1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. f1e1  6... b7b5  7. a4b3  7... e8g8 This variation is Carlsen's main weapon as Black and the one he used in his last world championship match against Nepomniachtchi. Interestingly, in the match he played against Caruana in 2018, Carlsen chose the Sicilian Sveshnikov as his main weapon.