Voir : 12 24 Tous — D85 Gruenfeld, exchange variation 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5.Bd2 (3) D85 Grienfeld , exchange variation 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 modern exchange variation (3) D85 Grienfeld , exchange variation 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Georgian variant (3)