His secret is to keep people awake

丁立人 (Dīng Lìrén) – Magnus Carlsen
Champions Showdown; match game 4 (30 minutes); Saint Louis, November 12, 2017
Catalan Opening E06

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 0-0 6. Qc2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Rd1 Ba6 11. b3 Qb6 12. Nd2. For 12. Be3 Bc5 13. Bxc5 Qxc5 14. Nd2 Rfd8 15. e3 Rac8 16. Rac1 Qa5 17. Nf3 c5 see Giri – Kramnik, 2nd Gashimov Memorial, Şəmkir 2015. 12. ... Rfd8 13. Bb2 Rac8 14. Rac1 h6 15. e3 c5 16. cxd5 exd5 17. Nf3!? A new (but obvious) idea, as 17. Qf5?! Be2! (eventually followed by ... Be2-g4-e6) is quite a nonsense, Mastrovasilis – Bombek, 22nd International Open, Kavala 2013.

17. ... d4! 18. Qd2. Maybe here White should search for something less artificious. 18. ... Ne4 19. Qe1 d3! It’s hard to realize that this Pawn will crucify Black. 20. Nd2 Nxd2 21. Qxd2 c4 22. bxc4 Bb4 23. Bc3 Rxc4 24. Bxb4 Qxb4 25. Qxb4 Rxb4 26. Rd2 Rc4 27. Rcd1. Who knows, maybe 丁立人 (Dīng Lìrén) would have done better to exchange a pair of Rooks. Whatever it is, it’s certain enough that White’s passive play – really improper in such an ending – led him to total disaster. 27. ... Rc3 28. f4 Bc4 29. Kf2 Ra3 30. Bf1 a5! 31. Ke1? After the game it was suggested that 31. e4(!) was probably White’s last chance to hope for a draw, giving the a2-Pawn in exchange for the d3-Pawn. Quite reliable, even though quite uncertain too! A sample line may be: 31. e4(!) Rxa2 32. Rxa2 Bxa2 33. Ke3 Bc4 34. Bxd3 a4 35. Rd2 Be6(!) and, even if a draw might be possible, it would be still far from trivial – it seems much easier to win (for Black) than to draw (for White). 31. ... a4 32. Rc1 Be6 33. Ra1 Kf8 34. Rb2 Rc3! 35. Rd2 a3! 36. Rb1 Bc4. And now, surrender: 37. Rb4 Rc1+ 38. Kf2 Bxa2 39. Ra4 Rc3 40. Rxa2 Rc2+ 0 : 1.