1. d4 f5

2. Bg5 h6

3. Bh4 g5

4. e3 Nf6

5. Bg3 d6

6. Bc4 e6

7. c3 Qe7

8. h3 Nbd7

9. Nd2 Bg7

10. Qb3 e5

11. O-O-O Nb6

12. dxe5 dxe5

13. Qb5+ Nfd7

14. Bb3 a6

15. Qe2 h5

16. Nc4 Nc5

An ugly oversight.  White must trade away his good pieces leaving just the bad bishop on g3 and the unemployed knight on g1. Both players will suffer a doubled pawn, but whereas white gets the mostly useless a file and an extremely weak pawn on b3, black enjoys a semiopen c file pointing straight at the white king and a less immediately

exploitable pawn on b6.

17. Nxb6 Nxb3+

18. axb3 cxb6

After this exchange, black has open diagonals for his bishops and the c file for his rooks, he is well positioned for a queenside attack. White is simply stuck.  with very little by way of meaningful play, he is reduced to quietly improving his pieces and waiting, perhaps making the occasional offering to the gods of chess that a bountiful harvest may inexplicably follow the current drought.

19. Nf3 Bd7

20. Rd2 O-O-O

21. Rhd1 h4

22. Bh2 g4

Castling long and advancing the kingside pawns grants white an opportunity in Qc4+, the question is whether it is more advantageous to play it immediately or after hxg4.  23.Qc4+ seems unclear, as it allows black to defend with Bc6, 24.Rxd8+ Rxd8 25.Rxd8+ Kxd8 26.Nxh4 Qxh4 27.Qg8+ Be8 leaving opposite coloured bishops and both queens in the enemy camp grabbing loose pawns.  White may also try 25.hxg4 Rxd1+  26.Kxd1 Qd7+ 27.Ke2 fxg4 28.Qg8+ Qd8 (28...Kc7 29.Nxe5 is death) 29.Qxg7 gxf3+ 30.gxf3 and again, though white is up a pawn, he is still faced with the problem of opposite coloured bishops.

23. hxg4 fxg4

24. Qc4+

This line leads to a more obvious and easier to exploit advantage for white.  Black's options are 24...Bc6 which simply hangs the g4 pawn leaving black with weak pawns all over the board; 25...Kb8 which loses a piece and a pawn to 26.Nxe5 Bxe5 27.Rxd7 Rxd7 28.Bxe5+ Ka7 29.Bxh8; or Qc5, as played.

24...Qc5

White's play is now clear, 25.Qf7 Qf8 26.Rxd7 Qxf7 27.Rxf7 gxf3 28.Rxg7, black resigns.  Alternatively, white could blunder horribly,

mumble something about being in time trouble and prolong the game for another hour.  I'll just fess up and say I missed this line completely until my opponent played it.  I saw that Qxc5+ won a pawn and with less than a minute per move to the time control and a complicated endgame looming, I grabbed the material without looking for the knock out.

25. Qxc5+ bxc5

26. Nxe5 Be6

27. Rxd8+ Rxd8

28. Rxd8+ Kxd8

29. Ng6 h3

30. gxh3 gxh3

31. Nf4 Bg4

32. f3 Bd7

A sneaky little trap, if black plays 32...Bxf3 white responds not with Nxh3, but with Ne6+.

33. Nh5 Bh6

34. f4 Ke7

Time control.

35. Kd2 Bg4

36. Ng3 Ke6

37. Ne4 b6

38. Nf2 Bf5

39. e4 Bh7

40. Kd3 b5

41. Nxh3 Kd7

42. Nf2 Bg7

43. Ng4 a5

44. Ne3 Bg8

45. Kc2 c4

46. bxc4 bxc4

47. f5 a4