Movsesian is trying to bring the rook out for the defence.
1. d2d4  1... d7d5  2. c2c4  2... c7c6  3. g1f3  3... g8f6  4. b1c3  4... d5c4  5. e2e4  5... b7b5  6. f1e2  6... e7e6  7. a2a4 Exploring less charted territory. There were just four games played so far in this line but since it got some exposure, Gelfand decided to uncork his novelty. 7... b5b4  8. e4e5  8... b4c3  9. e5f6  9... c3b2  10. f6g7  10... b2a1q  11. g7h8q A picturesque position! I am not sure, in which other opening line we get four queens as early as on move 11! 11... d8a5  12. f3d2 \"I kind of prepared this sacrifice, but I could not remember so much.\" (Gelfand) 12... c4c3  13. e1g1 The actual sacrifice, which was already forced. 13... c3d2  14. c1d2  14... a1d1  15. f1d1 And, here we are, almost a \"normal\" position. At least from a queen count perspective. 15... a5a4 Already a very risky decision by Movsesian. It is not about the pawn, rather the Armenian GM tries to keep the enemy pieces tied up. 16. h8h7 Gelfand decided to try an original plan. Rather than mating the enemy king he wants...