context: 1. d2d4  1... d7d5  2. c2c4  2... e7e6  3. b1c3  3... c7c6  4. e2e4 A sharp variation that is known as the \"Marshall Gambit.\" Considering that there's another gambit with the same name that is considered one of the best options for Black against the Ruy Lopez, it's safe to say that Frank really knew how to sac a pawn in the opening. 4... d5e4  5. c3e4  5... f8b4  6. c1d2 This is where the gambit really starts. A move like 6.Nc3 keeps material equal, but it's much less fun. 6... d8d4  7. d2b4  7... d4e4  8. g1e2  8... b8a6  9. b4f8 A pretty move that is well-known. 9... e4g6 Very rare. Arjun is an interesting player for the audience since he is always willing to take great risks in order to play for a win. He surely has a lot of analysis here. Both 10.Qd6 and 10.Nf4 are critical. 10. f8d6 Already an opening novelty. Robson was clearly surprised by the last move and spent a long time on his reply. 10... e6e5 Both 10...Ne7 and 10...Nh6 are good options. 11. d6e5  11... a6b4 This tempting move is a mistake. Black should choose either 11...Ne7 or 11...Nh6. 12. e2f4 The refutation of Black's play. Robson needs a lot of praise to find all this over the board, in a rapid game, with the pressure of being caught in the opening. 12... g6f5  13. d1d6 13.Bxg7 is also possible, but it's so hard for a human to evaluate that I prefer the move played in the game. 13... f7f6  14. e5c3  14... b4c2  15. e1d2  15... c2a1 