1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... a7a6  4. b5a4  4... g8f6  5. e1g1  5... f8e7  6. f1e1  6... b7b5  7. a4b3  7... e8g8  8. a2a4  8... c8b7  9. d2d3  9... d7d6  10. c1d2 A tricky move order that deprives Black of the standard Nc6-a5 maneuver. 10... d8d7 Played after almost half an hour of reflection. Was Carlsen  trying to remember something? Or was he deciding what to reveal and what  to hide before the match? At the press conference he said \"I just did't  know it very well.\" 11. b1c3 Now the d7-square is no longer available for the kingside knight; therefore, Black switches back to 11... c6a5 