1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. c4 Some other options for white are: 4. Nh3 d6 (4... d5!?)
5. O-O Be7 6. Nd2 O-O 7. e4 Nc6 8. c3 e5 9. d5 Nb8 10. Ng5 fxe4 11. Ndxe4 Nxe4 12. Nxe4 Bf5 13. Be3 Nd7 14. c4 Qe8 15. f3 Qg6 And black was doing well: 0-1 Pavlovic,M-Moiseenko,A/Bad Wiessee GER 2006 (33)
4. Nd2 d5 5. Nh3 Bd6 6. O-O O-O 7. Nf3 Ne4 8. Nf4 b6 9. c4 c6 10. Qb3 a5 11. Nd3 a4 12. Qc2 Bb7 And black has already equalized: 0-1 Rezan,S-Gleizerov,E/Zadar CRO 2005 (30)
4... Be7 4... d5 is the main alternative, but will most likely transpose later.
4... c6 is an alternative, but seems unnecessary since d5 is already available. 5. Nf3 d5 6. O-O Bd6 eventually transposing 7. b3 (7. Nbd2)
5. Nf3 5. Nh3!? giving full and unblocked range to the Bg2 5... d6 6. O-O O-O 7. b3 c6 8. Bb2 Qc7 9. Nd2 e5 10. c5 e4 11. cxd6 Bxd6 and black has a good attacking position, though his position is a little loose too. 1/2-1/2 Wirig,A-Sikula,V/Nancy FRA 2007/The Week in Chess 642 (50)
5... O-O 6. O-O d5 Black finally goes back to Stonewall mainlines. One alternative, and probably justifying the move order, is 6. ... d6
6... d6 7. Nc3 Ne4 (7... Qe8 8. b4 c6 9. Qb3 Kh8 10. a4 Ne4 11. Nxe4 fxe4 12. Nd2 d5 White can attack black's center in several ways, such as pushing b5 and f3. Black will get some attacking chances though if he can retake with the e6 pawn. 1/2-1/2 Bocharov,D-Chuprov,D/Salekhard RUS 2006 (67))
(7... Nc6!?)
8. Qc2 Nxc3 9. Qxc3 a5 10. b3 Bf6 11. Bb2 Nc6 12. Rad1 Qe8 13. Rfe1 e5 14. dxe5 dxe5 15. e4 Qg6 Black has some attacking chances in this interesting position. White is well developed though, so seems quite unclear! 1/2-1/2 Henrichs,T-Glek,I/Belgium BEL 2007 (42)
7. b3 7. Qc2 This is the move suggested by Khalifman in his book #3 of the Opening for White According to Kramnik, 7... c6 8. Nbd2 Ne4 9. Ne5 Nd7 10. Nd3 Bf6 11. Nf3 white controls e5 quite well! 11... dxc4 12. Nf4 Nb6 13. Rd1 g5 White gives up a pawn for initiative. Detailed analysis is needed here because the black e6 pawn will always need guarding.(13... Qe8 14. Ne5 Nd6 (14... c5 15. Be3 cxd4 16. Bxd4 Bxe5 17. Bxe5)
15. e3 Bxe5 16. dxe5 Nf7)
(13... Ng5 14. Ne5 Bxe5 15. dxe5 Qe7 16. Qc3 Nf7 17. b3 cxb3 18. Qxb3 Rd8 19. Ba3 Rxd1+ 20. Rxd1 Qe8 21. Bb2 Nd5 22. e4 fxe4 23. Bxe4 White gave up a pawn for some initiative. Black's e6 pawn will be tough to defend, and b7 needs guarding too.)
14. Nh5 Bh8 15. Ne5 1/2-1/2 Lohmann,H-Koch,H/ICCF Email 2002 (25)
7... b6 7... Nc6 1-0 Lechtynsky,J-Korchnoi,V/Dresden GER 2008 (55)
7... c6 Black stays solid with c6 instead of going to the more aggressive c5 directly as we see in the main game. This move secures the Stonewall! 8. Ba3 Bd7 (8... Bxa3 9. Nxa3 Qe7 10. Qc1 b6 11. Nc2 a5 1/2-1/2 Cramling,P-Karlsson,L/Gothenburg SWE 2006/The Week in Chess 609 (40))
(8... b6 9. Bxe7 Qxe7 10. Ne5 Bb7 11. Nd2 Nbd7 12. Ndf3 Rac8 13. Nxd7 Nxd7 14. cxd5 cxd5 1/2-1/2 Brynell,S-Karlsson,L/Gausdal NOR 2005)
9. Qc1 Be8 10. Bxe7 Qxe7 11. Qa3 Qxa3 12. Nxa3 Bh5 13. Rfe1 Nbd7 14. Rac1 Kf7 1/2-1/2 Cramling,P-Spraggett,K/Calvia ESP 2006/The Week in Chess 625
7... Bd7!? 8. Ba3 Be8 Black seems well prepared for whatever white might do.
8. Nc3 8. Bb2 c5 is another way to play.
8. Ba3 c6 9. Bxe7 Qxe7 10. Ne5 Bb7 I think black already has a good initiative. 0-1 Djordjevic,J-Mathes,W/ corr ICCF 1991/MegaCorr4 (32)
8. Ne5 Bb7 9. Bb2 Nbd7 10. Nd3 Bd6 11. Nd2 c5 12. e3 Qe7 1-0 Schmall,J-Mathes,W/corr ICCF 1995/MegaCorr4 (28)
8. Bf4 Ne4 9. Ne5 Bb7 is the way for white to play if he wants to play Ne5
8. Qc2 Ne4 9. Bb2 Bb7 10. Ne5 c5 11. dxc5 bxc5 12. Nc3 Bd6 13. Nxe4 dxe4 14. Rad1 Qc7 15. Qc3 1/2-1/2 Vanheirzeele,D-Goloshchapov,A/Belgium BEL 2003/The Week in Chess 439 1/2-1/2 Shirov,A-Bareev,E/Monte Carlo MNC 2005/The Week in Chess 543
8... Bb7 9. Bf4 Ne4 While thematic, I haven't seen another game played with this obvious move. Corky's opponent might have been surprised too!
9... Na6 10. Ne5 Qe8 11. Nd3 Ne4 12. Nxe4 dxe4 13. Ne5 Rd8 It seems to me that black has a better than average share of the chances in all these lines. 1/ 2-1/2 Caletka,R-Macejovsky,I/Moravia 2003/EXT 2006 (56)
10. Qc2 10. Rc1 is another option, but black can still attack as in the game with g5 10... g5
10... c5 10... c6 is still possible.
11. Nb5 g5 Corky goes straight for the throat!
12. Be5 Nd7 13. Nc7 Nxe5 14. Nxe6 Qd6 15. Nxf8 Nc6 16. Nxh7 White is trying to get the most out of his piece.
16... Kxh7 17. Rad1 Qf6 18. e3 Rd8 19. h4 gxh4 20. Nxh4 Qf7 21. Nf3 Bf6 putting a lot of pressure on d4. In fact it's been black's clear strategy to control this square and the center of the board.
22. dxc5 bxc5 23. a3 23. Nd2!? putting pressure on the knight might be a little better, but black is still firmly in control. 23... Nb4 24. Qb1 Nc3 25. Qxf5+ Qg6 26. Qxg6+ Kxg6 27. Rde1 Nc2 28. cxd5 Bxd5 29. Bxd5 Nxe1 30. Rxe1 Rxd5 31. Nc4 Nxa2
23... d4 black controlled d4 so this push is obvious, it just tears up white's position
24. Rfe1 dxe3 25. Rxe3 Nd4 26. Nxd4 Bxd4 27. Rxe4 fxe4 28. Bxe4+ Kg7 29. Bxb7 Qxb7 30. Qe2 Rd6 the exposed position of the black king gives white some slim chances of drawing but black prepares to cover him up!
31. Qg4+ Rg6 32. Qf4 Qc6 33. b4 Qf6 34. Qxf6+ Rxf6 the remainder of the game is pure style by Corky! The bishop sits on d4, the square that black controlled from early on. He easily exploits the black squares and nullifies whites connected pawns.
35. Rd2 Rf3 36. bxc5 Bxc5 37. Kg2 Rc3 38. f4 Rxc4 39. Rd7+ Kf6 40. Rc7 Ke6 41. g4 Kd5 42. Rf7 Ke4 43. g5 a5 44. Kg3 Bxa3 45. Ra7 Bb4 46. Ra6 Rc1 47. Re6+ Kd5 48. Ra6 Rf1 0-1
[GM Dr. Jason Bokar]