Daniil Dmitrievich Dubov – Nils Axel Grandelius
Champions Chess Tour 2021; 4th stage; Magnus Carlsen Invitational 2021; Prelims Tournament; time control: 15 minutes plus 10 seconds per move; chess24.com, March 13, 2021
English Opening A37
1. c4 g6 2. Nc3 c5 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 e5 6. d3 Nge7 7. 0-0 0-0 8. Nd2 d6 9. a3 a6!? 9. ... a5 has also its own good merits. A game Lein – Tukmakov, 39th USSR Chess Championship, Leningrad 1971 continued (by transposition): 10. Nd5 Rb8 11. Ne4 Nxd5 12. cxd5
Ne7 13. Nd2 h5 14. e4 Bg4 15. Qc2 a4 16. Qxa4 Be2 17. Re1 Bxd3
18. Qb3 Ba6 19. a4 Bh6 20. Qc3 Qd7 21. b4 cxb4 22. Qxb4 Rbc8
23. Bf1 Bxf1 24. Rxf1 Bxd2 25. Bxd2 Rc7 26. Bc1 Ra8 27. f4 Rc2
28. f5 (should be the losing move) 28. ... gxf5 29. Qb3 Rac8 30. Qf3 R8c4 31. exf5 Qxf5 32. Qxf5
Nxf5 33. Bg5 Nd4 34. Rab1 Rxa4 35. Rxb7 Raa2 36. Rfxf7 Ra1+
37. Rf1 Nf3+ 0 : 1. 10. Nd5 Rb8 11. Ne4 h6 12. b4 cxb4 13. Nxe7+ Nxe7 14. axb4 d5 15. cxd5 Nxd5 16. Qb3 Nc7 17. Qb1 Nb5 18. Bb2 Be6 19. Rc1 Bd5 20. Rc5 Kh8 21. Qf1 Re8 22. Rac1 Bc6 23. Nd2 Bxg2 24. Qxg2
24. ... Nd4? (24. ... Qe7 25. h4⩲↑) 25. Bxd4 exd4 26. Qf3 Re7 27. h4!→ Qe8 28. h5 g5 (28. ... Rxe2? 29. Ne4+−) 29. Ne4 Qd7 30. Kg2 Rf8 31. g4 (Δ Ne4-g3-f5) 31. ... Qa4. Sheer desperation, but by now there was no saving. Now Dubov energetically concludes his attack: 32. Rc8. Mutatis mutandis, 32. Nf6 Re6 33. Rc8+− would lead to a similar finale. 32. ... Qd7 33. Qf5! Qe6
34. Nf6! Qxf5 35. gxf5 Rxe2 36. Nd7 Rxc8 37. Rxc8+ Kh7 38. f6 Rb2. If 38. ... Bh8 then 39. Nf8+ Kg8 40. Ng6+ followed by mate in two moves. 39. fxg7 Kxg7 40. Rc4 1 : 0.
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