How many moves ahead?

One common question that chess players get is "How many moves can you see ahead?" I have listed some answers previously, but I do like the more outrageous claims (eg 20 moves), but only if they are delivered with a wink.
Of course some long combinations start as more of a hunch, before crystallising into a concrete line. It helps if a player has two results up there sleeve, with an escape pod if anything goes dramatically wrong.
Wesley So played a brilliancy in yesterdays round of the US Championship, against Jeffrey Xiong. While So's position looked slightly better, it didn't really kick off until the knight sac on f2. Even then it wasn't clear what the end point was, although So had plenty of threats. At first it seemed that the mating attack was the major goal, but it turned out that the c pawn was the real danger, and after c3, Xiong had no real defence. An impressive game by So, even more so if he was able to calculate the final position 10 moves out.


Xiong,Jeffery (2674) - So,Wesley (2822) [E06]
ch-USA 2017 Saint Louis USA (9.1), 07.04.2017

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 a6 8. a4 Bd7 9. Rd1 Bc6 10. Nc3 Bxf3 11. Bxf3 Nc6 12. Bxc6 bxc6 13. Bg5 Rb8 14. e3 c5 15. dxc5 Qe8 16. Rd4 Nd7 17. Bxe7 Qxe7 18. c6 Ne5 19. Qe4 Qc5 20. Nd5 Nd3 21. Nxc7 Nxf2 22. Kxf2 Rxb2+ 23. Kf1 Qh5 24. Qg4 Qxh2 25. Qf3 c3 26. Rc1 e5 27. Rh4 Qd2 28. Rd1 Rd8 29. Nd5 Rxd5 30. Rd4 Rxd4 31. exd4 Qxd1+ 0-1