Simen Plays the Stonewall

I was very happy when I got Simen Agdestein on my team for 'Win with the Stonewall Dutch'. He is one of the real pioners for the modern version with ...Bd6 rather than Botwinnik's classical ...Be7 Stonewall. Simen is not as active on the tournament circuit as he used to be, and even though he has started well in Tromsø's Arctic Chess Challenge, he is most of all the head of NTG's delegation of young chess students. But Simen is still capable of beating almost anybody and he still plays the Stonewall forcefully:

M.Turner (2493) - S.Agdestein (2583)
Arctic Chess Challenge (5) 2008

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 d5 5.0–0 Bd6 6.c4 c6 7.b3 Qe7 8.Bb2 b6 9.Qc1 Bb7 10.Ba3 Nbd7 11.Bxd6 Qxd6 12.Qa3 c5!?

Characteristically Simen goes for the sharpest solution.

13.cxd5 exd5 14.Nc3 0–0 15.Rac1 f4!

The name 'Stonewall' has tricked many white players. In Simen's hands, the wall is actually extremely mobile.

16.Rfd1 a6 17.dxc5 bxc5 18.Ng5 fxg3 19.hxg3 Ng4 20.Nf3 Rae8 21.Rd4?! (Dia)

White tries to fend off the attack by tactical means. It backfires badly but it seems White had serious problems anyway.

21...Nxf2!

This looks convincing, but I'd have to consult Fritz to be entirely sure.

22.Kxf2 Qe7 23.Rdd1 d4 24.Kg1 Qe3+ 25.Kh2 Nf6 26.Qxc5 Ng4+ 27.Kh3 Nf2+ 28.Kh2 Ng4+ 29.Kh3 Nf2+ 30.Kh2 Nxd1 31.Nxd1 Qh6+ 32.Kg1 Rc8 33.Ng5 Rxc5 34.Rxc5 Qd6 35.Ne6 Bxg2 0–1