The Ryder Gambit

In his book, Vom Ersten Zug an auf Matt, Diemer concentrated on the variation 5.Qxf3, which he called the Ryder Gambit, or the "classical double-pawn sacrifice." If the BDG is rare in "serious" chess these days, the Ryder Gambit is almost never seen. Here's an exception from a couple of years ago. BDG / Ryder Gambit Ribicic,M (2204) - Solic,K (2135) Open B Djakovo CRO (5), 03.05.2006 [Purser,Tom] 1.d4 d5 2.Nc3 Bf5 3.e4 dxe4 4.f3 exf3 5.Qxf3 Arriving at an unusual form of the Ryder Gambit in the BDG. 5...Qc8 6.Bc4 Nf6 [6...e6 7.Nge2 Nf6 8.h3 Bb4 9.0-0 Nbd7 10.g4 Bg6 11.g5 Nh5 12.Ne4 Nb6 13.Bd3 0-0 14.c4 Be7 15.N2g3 Nxg3 16.Qxg3 Bxe4 17.Bxe4 Nxc4 18.Qd3 Nd6 19.Bxh7+ Kh8 20.Bd2 g6 21.Bxg6 fxg6 22.Qxg6 Rxf1+ 23.Rxf1 Nf5 24.Rxf5 exf5 25.Bc3 Bb4 26.Bxb4 Qg8 27.Qxf5 Re8 28.d5 Qh7 29.g6 Black's flag fell 1-0 Mantia,T-Andreas,P/1456 Ohio Congress, Sept 1991/BDG WORLD 56] 7.Bg5 [7.Bf4 c6 8.Nge2 e6 9.0-0 Be7 10.Ng3 Bg6 11.Nce4 Nbd7 12.Nd6+ Bxd6 13.Bxd6 Nb6 14.Bb3 Qd7 15.Be5 0-0-0 16.c4 Ne8 17.Rfd1 f6 18.Bf4 Nc7 19.a4 Rhe8 20.a5 Nba8 21.a6 Nxa6 22.Rxa6 bxa6 23.Ba4 Kb7 24.d5 exd5 25.cxd5 Qe7 26.Bxc6+ Kb6 27.Qb3+ Kc5 28.Rc1+ Kd4 29.Qc4# 1-0 Talbot,R-Pryer,W/0843 England? 1973/BDG WORLD 41] 7...Bg4 8.Qe3 Nbd7 9.h3 Bh5 10.g4 Bg6 11.0-0-0 Nb6 12.Bb3 Qd7 13.d5 0-0-0 14.Nf3 Qe8 Concerned about Ne5, but he doesn't know the half of it. 15.a4 a5 16.Nb5 Nfxd5 17.Bxd5 Rxd5 18.Rxd5 Nxd5 19.Qa7 Qc6?? [Finding the worst possible move. 19...f6 was required.] 20.Qa8+ Kd7 [20...Kd7 21.Ne5+] 1-0