Excellent Win By Nakamura against So

Analysis by Deep Fritz 14

[Event "3rd Sinquefield Cup 2015"]
[Site "Saint Louis"]
[Date "2015.08.29"]
[Round "6"]
[White "So, Wesley"]
[Black "Nakamura, Hikaru"]
[Result "0-1"]
[ECO "E99"]
[WhiteElo "2779"]
[BlackElo "2814"]
[Annotator "Deep Fritz 14 x64 (10m)"]
[PlyCount "78"]
[EventDate "2015.??.??"]
[EventCountry "USA"]

{E99: King's Indian: Classical Main Line: 9 Ne1 Nd7 10 f3 f5} 1. d4 Nf6 2. c4
g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O {Black has a cramped
position} Nc6 (7... exd4 8. Nxd4 Nc6 9. Be3 $11) 8. d5 $14 {White threatens to
win material: d5xc6} Ne7 9. Ne1 {Black has a cramped position} Nd7 10. f3 f5 {
Attacks the pawn chain} 11. Be3 f4 {Black gets more space} 12. Bf2 g5 13. Nd3 {
White plans c5} Ng6 14. c5 Nf6 15. Rc1 Rf7 16. Kh1 h5 {Black prepares the
advance g4} 17. cxd6 cxd6 18. Nb5 a6 19. Na3 b5 20. Rc6 {The white rook on an
outpost} (20. Nb1 h4 $14) 20... g4 {Playing against the pawn chain} 21. Qc2 Qf8
22. Rc1 Bd7 {Black threatens to win material: Bd7xc6} (22... Bb7 23. Rc7 $14)
23. Rc7 (23. Rb6 Rc8 24. Qd1 Bh6 25. Rxa6 b4 26. Nxb4 Nxe4 $14) 23... Bh6 24.
Be1 h4 25. fxg4 f3 (25... h3 $5 {looks like a viable alternative} 26. Bf3 Bxg4
27. Bxg4 Rxc7 28. Be6+ Rf7 $11) 26. gxf3 $16 Nxe4 {White has a new protected
passed pawn: g4} 27. Rd1 $4 {with this move White loses his initiative} (27.
Rxd7 Rxf3 28. Bxf3 Qxf3+ 29. Qg2 Qxd3 30. Rd1 $19) 27... Rxf3 $17 28. Rxd7 $4 {
leads to further unpleasantness} (28. Ba5 Bxg4 29. Bb6 $19) 28... Rf1+ $19 29.
Kg2 Be3 30. Bg3 (30. Bf2 Rxf2+ 31. Nxf2 Qxf2+ 32. Kh1 $19) 30... hxg3 31. Rxf1
(31. Bxf1 {is one last hope} Nh4+ 32. Kh3 $19) 31... Nh4+ 32. Kh3 Qh6 33. g5
Nxg5+ 34. Kg4 Nhf3 $3 {Clearance: h4} 35. Nf2 (35. Bxf3 Qh3# {Mate attack
Clearance}) (35. Rxf3 Qh3# {Mate attack Clearance}) (35. -- $140 Qh3# {Mate
threat}) 35... Qh4+ 36. Kf5 Rf8+ 37. Kg6 (37. Rf7 {doesn't change anything
anymore} Rxf7+ 38. Kg6 Qh7#) 37... Rf6+ $3 {Clearance: g5} 38. Kxf6 (38. Kxf6
Ne4+ {Mate attack Clearance Pinning}) 38... Ne4+ 39. Kg6 (39. Kf5 {cannot
change what is in store for White} Qf4+ 40. Ke6 Qf6#) 39... Qg5# 0-1