1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... h7h6 A cunning line, played regularly by Carlsen among other top players. 4. g1f3  4... g8f6  5. e2e3 Sevian decided to keep his dark-squared bishop behind the pawn chain. 5... f8d6 Here too, the bishop can be developed more powerfully. 6. b2b3  6... e8g8  7. c1b2  7... b7b6  8. f1d3  8... c8b7  9. e1g1  9... b8d7 In a symmetrical position both players start to prepare for the inevitable central clash. The c7-c5 and e6-e5 breaks are on the agenda and both sides try to anticipate the future.