A new tactic was seen coming out of the London 2015 Chess Classic game between the two super stars Anish Giri and Hikaru Nakamura. So, set up your pieces and lets Tango!
l. Nf3 d5 I like HN play into the center here. 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. d3 O-O 6. Nbd2 c5 Here, Aronian has tried 6…Nc6 which is another set up aiming at a pawn center with e5.
7. e4 Nc6 8. Re1 Qc7 9. Qe2 b5 10. a4 b4 11. e:d5!?
A new move introduced into this position but nonetheless a common play in this type of set-up. Still, it seems to offer nothing if one thinks about pressure chess.
11. … e:d5 12. Nb3 Re8 13. Bf4 Qb6 14. a5 Qb5 15. Qd2
An interesting idea might be 15. …a6 with the idea to swing the Rook to the center/kingside via Ra7.
Be6 16. a6!!?
One might look at this as a s/c injection into the position using the a-pawn as a lure in part to get in a more effective Bg5 as a future target. In the same view, now …Rad8 which fits my s/c theory suggests itself. But Black now walks off in a different direction, eventually leading to a big plus s/c for White.
16. … Bf8 17. Ne5 N:e5 18. B:e5 Nd7 19. Bf4 Qb6 20. c3 Rac8 21. Qc2 d4 22. Nd2 h6 23. h4 d:c3 24. b:c3 b:c3 25. Q:c3 Nf6 26. Nc4 Qd8 27. Bb7 Nd5 28. Qd2 N:f4 29. Q:f4 Q:d3 30. Ne5 Qd6 31. Rad1 Qc7 32. N:c6 Q:c6 33. B:c6 R:c6 34. Qa4 Rec8 35. Rd8 c4 36. R:c8 R:c8 37. R:c6 f:e6 38. Qd7 Rc5 39.Q:e6+ Kh7 40. Qf7 Bd6 41. h5 Rg5 42. Kg2 c3 43. f4 c2 44. f:g5 c1Q 45. g6+ Kh8 46. Qe8+ Bf8 47. Q:f8#.
Part of the above sequence was adjudication analysis by Giri. It reminds one to never give up the ship.