1. e2e4  1... c7c5  2. g1f3  2... d7d6  3. d2d4  3... c5d4  4. f3d4  4... g8f6  5. b1c3  5... a7a6  6. h2h3  6... e7e5  7. d4f3 Only the third most played move in this position. The original idea of the move 6.h3 is to withdraw the knight to e2 and then play g4-Ng3. Many players also turn the knight back to b3 and then try to play in English Attack style, with Be3 and the g4-g5 push. But the 7.Nf3 move is more difficult to understand, despite having been played in many games. Praggnanandhaa will make his intentions clearer with his next move. 7... d8c7 A thematic move, aimed at avoiding the development of the white bishop on c4. 8. f3h2 A creative move, which has only been attempted once before. I'm always happy when I see new ideas even in openings as studied as the Najdorf Defense, as it shows that chess is very much alive. The idea of the knight returning to h2 is perhaps more associated with Ruy Lopez positions. Here the plan is to take the knight to g4 and then to e3, reinforcing control of the d5-square. 8... b8d7 A novelty. 9. h2g4  9... b7b5 A natural move—the b5 advance is part of Black's strategy in almost all of the Najdorf's positions. 10. g4e3  10... d7b6  11. a2a3 ...Avoiding the b5-b4 move and stabilizing the knight's position on c3. 11... f8e7  12. f1d3  12... c8e6  13. d1f3  13... g7g6  14. e1g1 Moves by both sides have been pretty logical so far, each player developing their pieces or avoiding the opponent's plan. Now Black commits an inaccuracy. 14... f6d7  15. c1d2  15... d7c5  16. d3e2  16... e8g8  17. e3f5 A nice tactical move, but one that only gives White a headache. 17... e6f5 It's hard to choose between this move and 17...gxf5. Both give Black an advantage. 18. e4f5  18... d6d5 This is the move that justifies Black's play and I believe it was not seen by Praggnanandhaa. 19. d2h6  19... f8d8 Black's center pawns are advancing and White's position becomes difficult to play. 20. a1d1  20... e5e4 The pawns keep marching. 21. f3g4  21... c5a4  22. c3a4  22... b6a4 The queenside is under attack and White tries a desperate counterplay on the opposite flank. 23. f5g6 Here or on the next move 23.Rb1 would be a sad but possible way to defend. 23... h7g6  24. f2f4 This is a move you play hoping for the best, even though you know it won't work. A refutation of the attack is not difficult to find. 24... c7b6  25. g1h1  25... f7f5  26. g4g3  26... a4b2 With an extra pawn, a powerful center, and the white bishops neutralized, Black's position is easily winning. 27. d1b1  27... b2c4  28. a3a4  28... g8h7 Not the most accurate. 29. e2c4  29... h7h6 Any White chance of counterplay disappears. 30. c4b3  30... a8c8  31. a4b5  31... a6b5  32. f1d1  32... d5d4  33. g3f2  33... c8c3  34. b1a1  34... b6f6  35. a1a7  35... f6h4  36. f2f1  36... d4d3  37. g2g3  37... d3c2  38. d1d8  38... e7d8  39. g3h4  39... c2c1q  40. f1c1  40... c3c1  41. h1g2  41... d8h4 The endgame presents no technical difficulty. 42. a7a6  42... c1c3  43. b3e6  43... c3c2  44. g2h1  44... h4f6  45. e6d7  45... h6g7  46. d7b5  46... c2f2  47. a6a7  47... g7h6  48. a7a6 