[Comment "auto-generated from 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[Event "?"]
[Site "?"]
[Date "2016.09.15"]
[Round "?"]
[White "Alekhine's Def. Modern with"]
[Black "4.Nf3 Bf5 5.Bd3 Bxd3"]
[Result "*"]
[ECO "B04"]
[Annotator "Kam Lee"]
[PlyCount "49"]
[EventDate "2016.??.??"]

{The investigation of the line of the Modern Variation 4.Nf3 Bf5 is certainly
a valuable inquiry in the developing of Modern theory. Unfortunately, my
investigation into this line supports the conclusion that a key lines tend to
strongly favour white.} 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bf5 5. Bd3 Bxd3 6.
Qxd3 e6 (6... Nc6 7. O-O dxe5 8. Nxe5 e6 9. Nxc6 bxc6 10. c4 Nf6 11. Nc3 Be7
12. Qf3 Qd7 13. Bf4 O-O 14. Be5 Rfe8 15. b3 Rab8 16. Na4 Rec8 17. Rad1 Qe8 18.
Rd3 h6 19. Rfd1 $16) 7. O-O {The critical line and white's main threat is Qb5+.
} (7. Qb5+ $6 Nc6 8. Qxb7 Ndb4 9. Qb5 dxe5 10. c3 Rb8 11. Qc4 Nc2+ 12. Kd1 N6b4
13. Nxe5 Nxa1 14. cxb4 Rb6 15. Nc3 Bd6 $11) 7... Nc6 {Probably best, but this
interesting tactical variation is unfortunately inadequate.} (7... Be7 {The
gambit does not provide adequate compensation.} 8. Qb5+ Nd7 9. Qxb7 {Black
will not be able to get sufficient compensation for the pawn.} dxe5 (9... O-O
10. Rd1 (10. Qb5 c5 11. exd6 Bxd6 $16 12. Bg5 $6 {Mammadov, Ayaz Arzu (2404)
-Chigladze, Iveri, (2341) 2015, 1/2-1/2.} Qc7 $11 13. dxc5 Nxc5 14. Qe2 h6 15.
Bd2 Rab8 $11) 10... dxe5 (10... Rb8 11. Qa6 Qc8 12. Qxc8 Rfxc8 13. c4 Nb4 14.
Nc3 Nc2 15. Rb1 dxe5 16. dxe5 Rd8 17. Kf1 g5 18. h3 h5 19. Bxg5 Bxg5 20. Nxg5
Nxe5 21. b3 $18) 11. dxe5 Nc5 12. Qb5 Qe8 13. Na3 Rd8 14. Nd4 Rd7 15. Qe2 Qa8
16. Nc4 Rfd8 17. Na5 Nf4 18. Bxf4 Rxd4 19. Rxd4 Rxd4 20. Be3 Rd5 21. b4 Nd7 22.
c4 Rxe5 23. b5 $18 {The lodging of the white knight to the c6-square can be
devastating.}) 10. dxe5 Rb8 11. Qxa7 Nc5 12. Qa5 O-O 13. Rd1 c6 14. Qe1 Qc7 15.
Na3 $18) (7... a6 {Slow and white has an effective path to gain a substantial
advantage.} 8. c4 Nb6 9. exd6 (9. Nc3 Be7 10. Qe4 (10. exd6 cxd6 11. Be3 O-O
12. Rfe1 d5 13. c5 Nc4 14. Bf4 Nc6 15. b3 Nb4 16. Qe2 Na3 17. Rac1 $16) 10...
d5 11. Qg4 g6 12. c5 h5 13. Qg3 Nc4 14. b3 Na5 15. Bd2 Nbc6 16. Ne2 b6 17. cxb6
cxb6 18. Rfd1 Rc8 19. h4 Qd7 20. Ng5 O-O 21. Qd3 b5 22. Nf4 Bxg5 23. hxg5 Rc7
24. f3 Qe7 25. Rac1 Nb7 26. Rc2 Rfc8 27. Rdc1 Kg7 28. Kh2 $16 (28. g3)) 9...
cxd6 10. d5 exd5 11. cxd5 Be7 12. Nc3 N8d7 13. Be3 O-O 14. Rac1 Rc8 15. Ne4 Na4
(15... f5 16. Neg5 Nc5 17. Bxc5 dxc5 18. Ne6 Qxd5 19. Qxd5 Nxd5 20. Nxf8 Bxf8
21. Rfd1 $16 {R v B+p}) 16. Qb3 b5 17. Rc6 Nf6 18. Nxf6+ Bxf6 19. Rxa6 Nxb2 20.
Qxb5 Nc4 21. Ba7 Qe7 22. Rc6 Qxa7 23. Qxc4 Ra8 24. Rxd6 Qxa2 25. Qxa2 Rxa2 26.
Re1 $16 {White has an extra pawn and it is also passed.}) 8. c4 Nb6 9. exd6
cxd6 (9... Bxd6 10. Nc3 Qd7 11. Rd1 $16 O-O-O 12. Be3 $16 {White's attack has
made more progress than black's.} Be7 13. a3 h5 (13... h6 14. b4 g5 15. c5 Nd5
16. b5 Na5 17. c6 $18 bxc6 18. Ne5 $18) 14. b4 Bf6 15. Ne4 $18) 10. Nc3 (10.
Re1 Be7 11. Nc3 O-O 12. b3 Re8 13. a3 Bf6 14. Bd2 Rc8 $16 {Black's key problem
is the lack of a meaningful counter attack.}) 10... Be7 (10... Rc8 11. d5 Ne5
12. Nxe5 dxe5 13. Qg3 $5 {Black is unable to castle king side.} Nxc4 (13... Qf6
14. dxe6 Qxe6 15. b3 $16) 14. dxe6 fxe6 15. Rd1 Qf6 16. Ne4 Qf5 17. Qd3 Kf7 18.
Qd7+ Be7 19. Bg5 Qxe4 20. Qxe7+ Kg6 21. Rd7 Rhg8 22. Bf6 $18) 11. d5 Nb4 12.
Qe4 Qd7 13. Bg5 O-O (13... Bxg5 14. Nxg5 Qe7 15. a3 N4xd5 16. cxd5 Qxg5 17.
dxe6 d5 18. Qe2 O-O 19. Rad1 Qe7 20. exf7+ Qxf7 21. f4 Rad8 22. Qf2 $16) 14.
Rad1 Rfe8 15. Bxe7 Qxe7 16. Rfe1 Rad8 17. Nb5 e5 18. c5 $5 dxc5 19. d6 Qd7 20.
Nc7 f6 21. Nxe8 Rxe8 22. Nh4 Re6 23. Nf5 Nc6 24. a4 Kh8 25. Qe3 $16 {My
investigation of the line 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bd5 5.Bd3 Bxd3 6.
Qxd3 e6 O-O shows that the black three main replies 7.... Be7, 7.... Nc6 and 7.
... a6 cannot prevent white from getting a substantial advantage. No doubt,
improvements could be found for both sides. If some decisive improvements can
be found for black, that would be great and I would also use this line. The
closely related line 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 Bf5 also
seems to have some problems. I am a strong fan of the line 1.e4 Nf6 2. e5 Nd5
3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6. Be2 Bf5 7.O-O Nbd7 8.Nf3 Qc7. This
continuation very resilient line against the Modern and black may even have
the luxury of playing Nf4.} *