1. d4 f5 2. c4 Nf6 3. g3 g6 4. Bg2 d6 5. Nc3 Bg7 6. Nf3 O-O 7. O-O Qe8 8. d5 Na6 9. Re1 Deviates from mainline, mixing systems and weakens whites f2 square. If white wants to play e4 he can do so with Nd4 supporting e4 with the g2 Bishop and the knight puts pressure on the hole on e6. 9... Nc5 10. Nd2?! e5 11. dxe6 Bxe6 12. e4 Nd3 13. Re3 Nxc1 14. Qxc1 Ng4 15. Re2 f4 16. Nd5 fxg3 17. fxg3 Opening the dark square diagonal into the king here is lethal, but pressure on the f2 sqaure would prove fatal after hxg3, earlier mistakes manafesting into concrete advantage. [17.hxg3 Bxd5 18.cxd5 Qb5 19.Nc4 Bd4] 17... Bxd5 18. cxd5 Bd4+ 0-1 [Scott Stewart]