The right snack.
1. d2d4  1... g8f6  2. b1c3  2... d7d5  3. c1f4 This is another Queen's Pawn sideline that's very popular in online blitz games. I have faced it countless times. What makes it so popular $2 This system leads to sharp positions where White dictates the character of the play. It quickly brings the game to positions where most players have never cared to study. Just look at my case: as I wrote, I have faced this many times online. Even so, I never studied a single line of theory here, always playing the position as Black \"by ear.\" It's a kind of prejudice: I never took this system seriously. Maybe it's time to study it and start improving my play against it in the next Titled Tuesday. 3... c7c5  4. e2e3  4... c5d4  5. e3d4  5... a7a6 Avoiding the annoying Nc3-b5 once and for all. 6. g1f3  6... b8c6  7. f3e5  7... c8d7 This position is well-known for both players. 8. g2g3 When I was young, my first teacher told me never to play g3 when I had a bishop on f4. Chess has advanced, and childhood memories are in the distant past. 8... e7e6  9. f1g2  9... c6e5 Not afraid of the pawn capture. 10. d4e5  10... f6g8 How can this position be playable for Black when on the 10th move nearly all of his pieces are in the initial position $2 I hear the curious reader ask. Always look at the pawn structure; it will usually give you all the answers for life's existence. There are no meaningful pawn breaks, and the center is closed, so Black is in time to develop the pieces without suffering major injuries. 11. e1g1  11... g8e7  12. f1e1  12... e7g6  13. f4e3  13... d8c7 Of course, taking on e5 can't even be considered with that rook on e1. But 14. h2h4 [%c_effect h4;square;h4;type;GreatFind;persistent;true] A good move to disturb the knight. 14... f8c5  15. e3c5  15... c7c5  16. d1g4  16... g6e7 [%c_effect e7;square;e7;type;Interesting;persistent;true] Clever play. The pawn on g7 cannot be captured. 17. a1d1  17... d7c6  18. h4h5  18... h7h6 After many adventures, we get a French-like pawn structure, something that is always somewhat scary for the player with the black pieces. 19. d1d2  19... e8g8  20. a2a3  20... a6a5  21. c3e2  21... c6b5 [%c_effect b5;square;b5;type;GreatFind;persistent;true] 22. e2d4  22... e7c6  23. d4f3  23... b5a6 With some clever maneuvering, Praggnanandhaa is ready to push the pawns on the queenside and can hope for equality. 24. c2c3  24... b7b5  25. f3d4  25... c6d4 [%c_effect d4;square;d4;type;GreatFind;persistent;true] It's usually difficult to evaluate changes in pawn structure. That's why this move, with its apparent simplicity, is actually not so easy to play. I suspect that Praggnanandhaa wanted to avoid any possible Nxe6 trick by his opponent. 26. c3d4  26... c5c7  27. f2f4  27... b5b4  28. a3b4  28... a5b4  29. g4f3  29... c7e7  30. f3e3  30... a6c4  31. g2f3  31... a8a2  32. g3g4  32... f8a8  33. g4g5  33... a2a1 Both sides show high class in this game. Good moves are played and, better than that, moves that we can understand. In chess, however, after a calm comes a storm. The game will soon become sharp. 34. d2g2 [%c_effect g2;square;g2;type;Inaccuracy;persistent;true] 34... h6g5  35. f4g5  35... c4d3 [%c_effect d3;square;d3;type;GreatFind;persistent;true] A strong move, bringing the bishop to the excellent f5-square, where it can attack and defend. 36. g1h2  36... d3f5  37. e1c1  37... a1c1  38. e3c1  38... e7a7  39. c1f4  39... a8c8  40. h5h6  40... g7g6  41. f3g4 [%c_effect g4;square;g4;type;GreatFind;persistent;true] 41... c8c4  42. g2d2 [%c_effect d2;square;d2;type;Inaccuracy;persistent;true] 42... a7c7  43. g4f5  43... e6f5  44. h2g3  44... c4c1  45. d2g2 [%c_effect g2;square;g2;type;Mistake;persistent;true] The losing move. Black has no way to break White's defense after 45... c1e1 [%c_effect e1;square;e1;type;GreatFind;persistent;true] The rook comes to e4, and the game is decided. 46. f4d2  46... e1e4  47. g3h2  47... c7c4  48. b2b3 