Houdini annotates:
--------------------
[Event "Best of the West Class Champ"]
[Site "Santa Clara California"]
[Date "2012.05.27"]
[Round "3"]
[White "De Guzman, Ricardo"]
[Black "Sloan, Sam"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2450"]
[BlackElo "2000"]
[Annotator "Houdini 1.5a w32 (600m)"]
[PlyCount "79"]
[EventDate "2012.??.??"]
{D45: Semi-Slav: 5 e3} 1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. e3 Bd6 6. Qc2
O-O 7. Bd3 Na6 8. a3 dxc4 9. Bxc4 b5 10. Bd3 h6 $146 {Prevents intrusion on g5}
(10... Qe7 11. Ne4 Bb7 12. Nxf6+ Qxf6 13. Bxh7+ Kh8 14. Be4 Rac8 15. Qe2 Qh6
16. Bd2 f5 17. Bd3 Qf6 18. Rc1 Rfe8 19. O-O Bb8 20. a4 Nc7 21. Ne5 g6 22. Nxc6
Nd5 23. Nxb8 Rxb8 24. Bxb5 Re7 25. f3 {Acebal Muniz,A (2203)-Martinez
Rodriguez,E (1913)/Gijon 2007/CBM 119 ext/1-0 (45)}) (10... b4 11. Ne4 Nxe4 12.
Bxe4 $14) 11. O-O (11. e4 Be7 12. e5 Nd5 $16) 11... Qc7 (11... b4 12. Na4 bxa3
13. bxa3 $14) 12. b4 $16 Bd7 (12... Rd8 13. Ne2 $16) 13. Bb2 (13. e4 Be7 $16)
13... Rac8 (13... Rfc8 14. e4 Be7 15. Rfc1 $16) 14. Ne2 Rfe8 (14... Nd5 15.
Rac1 $16) 15. e4 e5 $2 (15... Be7 $142 $16) 16. dxe5 $18 Bxe5 17. Nxe5 Rxe5 18.
Bxe5 Qxe5 19. Qc3 Qe7 20. e5 Ng4 (20... Nd5 21. Qd4 Nac7 22. Be4 $18) 21. e6 $1
{decapitation} Bxe6 (21... Bxe6 22. h3 {Combination}) (21... Qxe6 22. Ng3 {
Combination}) (21... fxe6 22. Qd4 {Combination}) (21... -- $140 22. exd7 {Wins
material}) 22. h3 Nf6 23. Nf4 (23. Rac1 $5 Bd7 24. Nd4 Nd5 $18) 23... Bd7 $16
24. Rfe1 Qd6 25. Qe5 Qf8 (25... Qxe5 $5 26. Rxe5 Nc7 $16) 26. Rad1 $18 c5 27.
Nd5 Nxd5 28. Qxd5 Bc6 (28... Nb8 29. bxc5 Rxc5 $18) 29. Qf5 g6 30. Qg4 cxb4 31.
Bxg6 fxg6 32. Re6 g5 (32... Be8 {is not much help} 33. Rxa6 Rc4 34. Qe6+ Bf7
35. Qf6 $18) 33. Rg6+ Kh7 (33... Kh8 34. Rdd6 Be4 35. Rxh6+ Bh7 36. Rxh7+ Kxh7
37. Rd7+ Qg7 38. Rxg7+ Kxg7 39. Qxc8 g4 40. Qxa6 Kh7 41. hxg4 b3 42. Qxb5 Kg7
43. Qxb3 Kf6 44. Qd5 a6 45. g5+ Kg6 46. Qe6+ Kxg5 47. Qf7 Kg4 48. Qf6 Kh5 49.
f4 a5 50. Qg5#) 34. Rxc6 $1 {Decoy: c6} Rxc6 (34... Rxc6 35. Qd7+ {Decoy
Double attack}) (34... -- $140 35. Rd7+ {Mate threat}) 35. Qd7+ Kh8 36. Qxc6
Nb8 37. Qc7 Nc6 38. Qxc6 bxa3 39. Qxb5 a2 40. Qb2+ (40. Qb2+ Kg8 41. Rd7 a1=Q+
42. Qxa1 Qf7 43. Rd8+ Qf8 44. Qa2+ Kg7 45. Rd7+ Kf6 46. Qa6+ Ke5 47. Qb5+ Qc5
48. Qxc5+ Ke6 49. Qd5+ Kf6 50. g4 a5 51. Qf5#) 1-0
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Sorry, but I am not going to even attempt to re-format this compact mess, as usenet often garbles my formatting anyway.