1. e2e4  1... c7c5  2. g1f3  2... b8c6  3. f1b5  3... e7e5 This is only the ninth most popular choice for Black against the Rossolimo. 4. e1g1  4... f8d6  5. c2c3  5... a7a6  6. b5a4  6... b7b5  7. a4b3  7... c5c4  8. b3c2  8... g8f6  9. d2d4  9... c4d3  10. d1d3  10... d6e7  11. f1d1  11... d7d6  12. c1g5  12... f6h5 The players are following their own theory. All of this had been tried in the first tiebreak game. It's worth mentioning that So has an opening course in which he recommends the Rossolimo. The move 12...Nh5 is not mentioned in the course; only 12...0-0 is analyzed. 13. g5e3 