2... Nf6 3. Bg5 e6 (3... Ne4!? 4. Bf4 
)
4. Nbd2 Be7 5. e3 (5. Bxf6!? Bxf6 6. e4)
5...
3... Nf6
4. Bxe7 Qxe7 5. Nbd2 Nf6 6. e3 b6 7. Bd3 Bb7 8. Qe2 Ne4
The battle is over the e4 square, as in a Colle system. White's next move (and the plan it entails) is a logical and original way of trying to undermine Black's control of that square while creating play on the kingside.
10... fxg4?! 11. Bxe4 gxf3 12. Qxf3 
This certainly makes more sense than putting the King in line with White's Rook at g1, but the black monarch turns out not to be safe on this side of the board either.
A wasted tempo that hands White a strong attack
using Black's weak light squares around his king. But White gets similar
play after 13... Ndf6?! 14. d5! Nxd5 15. Nxe4! fxe4 (15... Qxe4 16. Rd4 Qe6 17. Qc4 
)
16. Nd4! Nb4 17. Bxb7+ Kxb7 18. Qb5 (18. a3 Nc6 19. Nxc6 Kxc6 20. Qa6 Ra8 21. Rd4)
18... c5 (18... Rdf8!? 
)
19. Nf5! Qf6 20. Rxg7+ Kb8 21. Qa4 a5 22. a3
Necessary was 13... d5! and things are still up in the air.
14. Bxb7 Kxb7 15. d5! g6 16. Nd4 Nb8?
White now wins a pawn by force with continuing initiative. But Black's game is difficult in any event.
18. Nxe4 fxe4 19. Rg4 c6 20. Rxe4 Qd7 21. dxc6+ Qxc6? 22. Rc4! Qg2
Position after 22...Qg2.
23. Nf4!+-
Best, leading to the win of the queen or to mate, as in the game. 23. Rc7+ Ka8 24. Rf7 Rc8 25. Nc7+ Rxc7 26. Rxc7 wins only the exchange.
23... Qg5
23... Qc6 24. Rxc6 Nxc6 may be the only way to hold.
Black's King is forced to go for a walk.
Fritz says 26. Rxa7 mates faster.
26... Qxd5 27. Qxd5+ Kxa4 28. Qc4+ Ka5 29. b4+ Ka4 30. Nd5 1-0
