1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1b5  3... g8f6  4. d2d3  4... f8c5  5. c2c3  5... d7d5  6. e4d5  6... d8d5  7. b5c4  7... d5d6  8. b2b4  8... c5b6  9. b1d2  9... c8g4 A new move. Jumabayev had used a lot of time already, so I doubt it was prepared beforehand. 10. a2a4 Judging by the continuation of the game, it's possible to say that castling immediately is more accurate. 10... e5e4 [%c_effect e4;square;e4;type;GreatFind;persistent;true] A very strong pawn sacrifice. 11. d3e4  11... a7a5 [%c_effect a5;square;a5;type;GreatFind;persistent;true] It's necessary to give some air for the bishop. 12. b4a5  12... c6a5 