[Event "US Junior Championship"]
[Site "Memphis, TN"]
[Date "1976.06.??"]
[Round "5"]
[White "Diesen"]
[Black "DeFirmian"]
[Result "1-0"]
[ECO "B91"]
[WhiteElo "2467"]
[BlackElo "2649"]
[Annotator "Fritz 9 (30s)"]
[PlyCount "63"]
[EventDate "1976.??.??"]
{B91: Sicilian Najdorf: 6 g3} 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3
a6 6. g3 g6 7. Bg2 Bg7 8. O-O O-O 9. h3 Nc6 10. Nde2 Bd7 11. Nd5 Nxd5 12. exd5
Ne5 {last book move} 13. Kh2 Rc8 14. Rb1 (14. c3 Bb5 $11) 14... Qa5 15. a3 Qc5
(15... Nc4 16. c3 $15) 16. c3 Bb5 (16... Bf5 $5 17. Ra1 Qb6 $11) 17. Be3 $14 {
White threatens to win material: Be3xc5} Qc7 18. Bd4 Bd3 {Black threatens to
win material: Bd3xb1} 19. Ra1 Rfe8 20. Re1 Bf5 21. g4 {White threatens to win
material: g4xf5} Bd7 22. Ng3 (22. b3 $142 g5 23. Qd2 $14) 22... Qc4 $2 (22...
Nc4 $142 {and Black could well hope to play on} 23. Bxg7 Kxg7 $14) 23. b3 $18
Qd3 24. f4 Rxc3 $2 (24... Qxd1 $142 $5 25. Raxd1 f6 $18) 25. Bxc3 Qxc3 26. Rc1
Qb2 (26... Qa5 $18) 27. fxe5 Bxe5 28. Qf3 (28. Rc7 {keeps an even firmer grip}
Rd8 29. Qc1 Qxb3 30. Rxe5 dxe5 $18) 28... f5 $2 (28... Qxa3 29. Rf1 f6 $18) 29.
gxf5 Rf8 30. Kh1 Bxf5 (30... Qxa3 {hardly improves anything} 31. Qe3 Bxf5 32.
Rc7 $18) 31. Rf1 Qd4 (31... Qxa3 {cannot change destiny} 32. Rc7 $18 (32. Nxf5
$143 Rxf5 33. Qg4 Kg7 $18)) 32. Nxf5 (32. Nxf5 Rxf5 33. Qe4 Rxf1+ 34. Rxf1 $18)
1-0