Here’s an interesting and little known gambit that I only found out about yesterday. White makes out that he’s playing for a Milner-Barry Gambit with 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 but after 6…cxd4 plays 7.0-0 rather than 7.cxd4 Bd7 8.Nc3 Nxd4 9.Nxd4 Qxd4 10.0-0. Of course Black can capture on c3 with 7…dxc3 but after 8.Nxc3 White gets pretty good positional compensation for the pawn.
So most of the players who’ve had to face this with Black meet 7.0-0 with 7…Bd7, still hoping for regular Milner-Barry gambit territory after 8.cxd4 Nxd4 9.Nxd4 Qxd4. But White doesn’t have to do that and can instead continue to offer the c3 pawn with 8.Re1.
In the following encounter this line got quite a scalp in the form of the veteran Armenian GM, Rafael Vaganian. White was that well known gambiteer Jonny Hector who has been sacrificing pawns throughout his lively career: