[Event "Gibbins-Weidenhagen Gambit"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Nakamura, C."]
[Black "Fritz5"]
[Result "*"]
[ECO "A45"]
[Annotator "5/24/02 Analysis"]
[PlyCount "36"]

{16384kB
} 1. d4 Nf6 2. g4 Nxg4 3. e4 d5 4. Be2 Nf6 5. e5 Nfd7 6. e6 fxe6 7.
Qd3 g6 8. Bf4 (8. Nf3 Bg7 9. Bf4 (9. Ng5 Nf6 10. Bf4 Ne4 11. Nd2 Nxg5 12. Bxg5
Qd6 13. c3 e5 14. dxe5 Qxe5 15. Nf3 Qf5 16. O-O-O Qxd3 17. Rxd3) 9... c5 10. c3
Qb6 11. Qd2 cxd4 12. cxd4 Nc6 13. Be3 Nf6 14. Nc3 Ne4 15. Nxe4 dxe4 16. Ne5
Nxe5 17. dxe5 Qc7 18. Bd4 Bd7 (18... Bxe5 19. Bb5+ Kf7 20. Rc1 Qd6 21. Bxe5
Qxe5 22. Be2 $19 {Advantage for black of 2.41.}) 19. Rc1 Bc6 20. Qc3 Rd8 21.
Bg4 Qd7 22. Rd1 Bd5 23. Bxa7 Ra8 24. Qd4 b5 25. Bb6 Rxa2 26. O-O Qb7 27. Ra1
Qb8 28. Rxa2 Bxe5 29. Qc5 Bxh2+ 30. Kh1 Bxa2 31. b3 Kf7 32. f3 e3 33. Qxe3 Qd6
34. Re1 h5 35. Bxe6+ $18 {White is clearly better in this position according
to Fritz5 with an advantage of 2.22.}) (8. Bg5 Bg7 9. Nf3 c5 10. c3 Nc6 11. Na3
cxd4 12. Nxd4 Nxd4 13. cxd4 e5 14. dxe5 Nxe5 15. Qb5+ Qd7 16. Rd1 d4 17. Bh6
Bf6 18. Bf4 Nc6 19. Bg3 a6 20. Qc5 Qf5 21. Qb6 $19) 8... Bg7 9. Qg3 O-O (9...
Nc6 10. Bxc7 Qxc7 11. Qxc7 Bxd4 12. Nf3 Bxb2 13. Bb5 Bxa1 14. Bxc6 bxc6 15.
Qxc6 Bb7 16. Qxe6 Rc8 17. Qe2 e5 18. O-O e4 19. Na3 Bf6 20. Nb5 O-O 21. Nd6 Rb8
22. Nd2 22... Ne5 $15 {According to Fritz5 black has a slight edge of 0.28.
})
(9... Na6 10. Bxa6 bxa6 11. Bxc7 $18) (9... e5 10. dxe5 Nc5 11. Nc3 Ne6 12. Be3
(12. O-O-O Nxf4 13. Qxf4 c6 14. Nf3 Qc7 15. Rhe1 Bf5 16. Qg3 e6 17. Bf1 Nd7 18.
Bh3 Bxh3 19. Qxh3 Nf8 20. Ng5 (20. Nd4 Qf7 21. Na4 Qe7 22. Qc3 Nd7 23. Qh3 Bxe5
24. Nxe6 Kf7 25. Nd4 Rae8 26. Kb1 Qd8 27. Nf3 Bg7 28. Ng5+ Qxg5 29. Qxd7+ Re7
30. f4 Qf6 31. Rxe7+ Qxe7 32. Qxe7+ Kxe7 33. c4 $19 {
The endgame is not good for white. He is playing for the draw.}) 20... Qe7 21.
f4 h6 22. Nf3 22... O-O-O $19 {
According to Fritz5 black has an advantage of 0.91.}) 12... d4 13. O-O-O c5 14.
Nf3 Qa5 15. Bb5+ Bd7 16. Qg4 Nc6 17. Bxc6 bxc6 18. Nxd4 cxd4 19. Bxd4 19... Rd8
$19 {White's game is lost. He is down a minor piece.}) 10. Bxc7 Qe8 11. Nf3 Nc6
12. c3 e5 13. dxe5 (13. Bxe5 Ndxe5 14. dxe5 Bf5 15. Nbd2 Qb8 16. Rd1 Nxe5 17.
Nd4 Bc8 18. Rg1 Nc6 19. N2b3 e5 20. Nc2 Rd8 21. h4 {
According to Fritz5 black has a slight edge  of 0.59.}) 13... Nc5 14. Ng5 Ne6
15. Nxe6 Bxe6 16. Na3 Qc8 17. Nb5 a6 18. Bb6 18... axb5 $19 {
advantage black 3.34.} *

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Analysis Gibbins-Weidenhagen"]
[Black "6.Bg5 line"]
[Result "*"]
[ECO "A45"]
[Annotator "Nakamura, C 5/26/02"]
[PlyCount "44"]

1. d4 Nf6 2. g4 Nxg4 3. e4 d5 4. Be2 Nf6 5. e5 Nfd7 6. Bg5 h6 7. Bh4 g5 8. e6
gxh4 (8... fxe6 9. Bh5#) 9. Bh5 Rh7 10. exf7+ (10. Qd3 Nf6 11. Bxf7+ Rxf7 12.
exf7+ Kxf7 13. Nf3 Bg7 14. Ne5+ Kg8 15. Rg1 Qe8 16. Nd2 Nbd7 17. O-O-O Nf8 18.
Qe3 Ne6 19. Rg2 (19. Qxh6 Qh5 20. Qe3 {
Black has a slight edge of 0.59.  This line is not that good for White.}) 19...
Ng5 20. f4 Ne6 21. Rdg1 b6 22. Qh3 Nh5 23. Qxh4 c5 24. Rg6 Nexf4 25. Rxg7+ Nxg7
26. Qxf4 Kh7 27. Ndf3 Nf5 28. Qg4 a6 29. Nh4 h5 30. Qg5 Ng3 (30... Qf8 31. Qg6+
Kh8 32. Nf7+ Qxf7 33. Qxf7 Nxh4 34. Qg7# {checkmate}) 31. Rxg3 Bg4 32. Nxg4
hxg4 33. Qf5+ Kh8 34. Rxg4 Rd8 35. Qe5+ Kh7 36. Qg7# {checkmate}) 10... Rxf7
11. Bxf7+ Kxf7 12. Qh5+ Kg7 13. Nf3 Nf6 14. Rg1+ Kh8 15. Qxh4 Nc6 16. Nc3 (16.
Nbd2 Bf5 17. Ne5 Qe8 18. Qf4 e6 19. Ng6+ Bxg6 20. Qxf6+ Kh7 21. c3 e5 22. O-O-O
exd4 23. Rde1 Qf7 24. Re6 Qxf6 25. Rxf6 25... Bh5 {
Black has the advantage of 2.15 according to Fritz5.}) (16. Ne5 Nxe5 17. dxe5
Ne4 18. f3 Nc5 19. Nc3 Bf5 20. Qg3 Bh7 21. O-O-O 21... e6 {
Fritz5 gives black an advantage of 0.88.}) 16... Qd7 17. O-O-O Qf5 18. Ng5 Ng4
19. h3 Nb4 20. Rd2 Qxg5 21. Qxg5 hxg5 22. hxg4 22... c6 {
According to Fritz5 black has a slight edge of 1.05.} *

