1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. a2a3 The Saemisch Variation of the Nimzo-Indian is quite risky, since White usually needs to sacrifice a pawn on the queenside, but the attack that is generated on the other side of the board makes this line very dangerous to meet in practice. 5... b4c3  6. b2c3  6... d7d6 There are other ways of playing. A normal plan is to go c5-b6-Nc6-Na5-Ba6 quickly. 7. f2f3  7... b8c6  8. e3e4  8... d8e8 The game rapidly takes on new contours. The idea of ​​this move is probably to prevent the pin with the bishop on g5. 9. h2h4 Played after a long thought. This is a plan that was prepared in a similar position, and Nepomniachtchi must have been checking the differences with the queen on e8 and not the knight on d7. 9... b7b6  10. h4h5  10... c8a6  11. a1a2 A similar plan to the one used by Ding Liren in a famous game of the last world championship match against Nepomniachtchi. 11... c6a5  12. g2g4 The rook is ready to join the attack. Nepomniachtchi said he had looked at this position with the queen on d8. 12... e8c6 Attacking the c4-pawn and also with an eye on ...Nxe4. 13. a2g2 