[%c_effect e3;square;e3;type;Mistake;persistent;true] This move loses.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... d7d5  4. c4d5  4... e6d5  5. c1g5  5... f8e7  6. e2e3  6... e8g8  7. f1d3  7... f8e8  8. g1e2 Developing the knight on e2 was Kasparov's favorite plan in these positions. It can't be too bad. 8... c7c6  9. e1g1  9... a7a5 [%c_effect a5;square;a5;type;Interesting;persistent;true] The Orthodox Defense is Black's most traditional choice against the Queen's Pawn, played by almost all the greatest chess players in history. Naturally, its theory has undergone a great deal of evolution during all these years. Computers are also playing their part in this process: many new plans are being tested, far beyond the traditional Nbd7-f8, which was automatic in this type of position. In this modern version, tested by Lagno in this game and tried earlier by GM Dubov, the knight seeks an alternative route via a6. 10. a1c1 It's not clear to me that this is the best square for the rook. If White is going to try the plan with f3-e4, then the rook might be more useful on d1 or e1. 10... b8a6  11. h2h3  11... a6c7  12. g5f4 A new move. 12... e7d6  13. c3a4  13... c7e6  14. f4e5 [%c_effect e5;square;e5;type;Interesting;persistent;true] 14... d6e5 The critical move, capturing the bishop before White can play f2-f4. 15. d4e5  15... f6d7  16. f2f4  16... b7b5 [%c_effect b5;square;b5;type;GreatFind;persistent;true] 17. a4c3  17... d8b6  18. f1f3  18... f7f6 [%c_effect f6;square;f6;type;GreatFind;persistent;true] Necessary to create counterplay. This is a critical position. 19. e5f6 [%c_effect f6;square;f6;type;Inaccuracy;persistent;true] 19... d7f6  20. g1h1  20... c8b7 Now the initiative is in Black's hands. 21. e2d4 [%c_effect d4;square;d4;type;Inaccuracy;persistent;true] 21... c6c5 [%c_effect c5;square;c5;type;Inaccuracy;persistent;true] A bold sacrifice, but it isn't necessary. 22. d4b5  22... d5d4  23. c3a4  23... b6d8  24. f3g3  24... d4e3 