
Rainer Schlenker refers to 1.e4 e5 2.Nf3 Bc5 (see "Worth a Second Look... (Part 1)") as the "Busch - Gass Gambit" in the May/June 1985 issue (pp. 69-71) of his magazine Randspringer.
He refers to analysis by Oskar Cordel in Führer durch die Schachtheorie (1888)
1.e4 e5 2.Nf3 Bc5 3.Nxe5 Qe7 4.d4 Bd6 (4...Bb6 5.Bc4!) 5.f4 f6 6.Nc4 Qxe4+ 7.Kf2 Bxf4 8.Nc3 Qf5 9.Bd3 Qg5 10.Re1+ Ne7 11.Kg1 Nbc6 12.Bxf4 Qxf4 13.Qh5+ Kf8 14.Re4 +/- / +-and analysis included in Bilguer (1916)
1.e4 e5 2.Nf3 Bc5 3.Nxe5 Qe7 4.d4 Bd6 5.Nc3! Bxe5 6.Nd5 Qd6 7.dxe5 Qxe5 8.Bf4 Qxe4+ 9.Qd2Schlenker, however, modifies the name that Bent Larsen gave to the line ("Busch-Gambit") in Larsen's Sharp Openings (in Danish) based on the game Baird - Busch, 15. Kongresses Deutchen Schachbundes, Nuremberg 1906. Sharp Openings included a portion of the game:
Baird,D - Busch
Nuremberg, 1906
1.e4 e5 2.Nf3 Bc5 3.Nxe5 Nc6 4.Nf3 Qe7 5.Nc3 Nf6 6.d4 Nxe4 7.Nd5 Bb4+ 8.Bd2 Nxd2+ 9.Nxe7 Nxf3+ 10.Ke2 Nfxd4+ 11.Kd3 Bxe7 12.c3 Ne6 13.Kc2 0-0 14.g3 d5 15.Bd3 Rd8 16.f4 d4 17.f5 dxc3 18.fxe6 Nb4+ 19.Kxc3 Rxd3+ 20.Qxd3 Nxd3 21.exf7+ Kf8 22.Kxd3 Bf5+ 0-1
Schlenker adds the name "Gass" to the variation after the German master who had been playing the line in the 1970s and 1980s, and gives a few examples.
Many of Gass's blitz games have gone:
NN - Gass
blitz (1970 - 1985)
1.e4 e5 2.Nf3 Bc5 3.Nxe5 Nc6 4.Nxc6 dxc6 5.d3 Nf6 6.Bg5 Nxe4 7.Bxd8 Bxf2+ 8.Ke2 Bg4 checkmate
and then there's
NN - Gass
blitz
1.e4 e5 2.Nf3 Bc5 3.Nxe5 Nc6 4.Nxc6 dxc6 5.c3 Qe7 6.f3 f5 7.d4 fxe4 8.dxc5 exf3+ 9.Kf2 Nf6 10.Bc4 Ne4+ 11.Kg1 fxg2 12.Kxg2 Bh3+ 13.Kg1 Qxc5+ 14.Qd4 Rd8!! White resigns
While Cordel (1888) and Bilguer (1916) updated the analysis of Salvio (1604) (see "Worth a Second Look... (Part 1)"), Busch and Gass have taken the opening in a different direction: that of a reversed Boden - Kieseritzky Gambit, a move down.
That, too, deserves a second look...


Once White plays e5-e6, Black will be able to establish a dark square blockade with his Bishop and King, and the White pawns will not advance. Likewise, White can establish a light square blockade with his King and Bishop, and the enemy c-pawn will do no damage.
It's evident that neither one of us is getting anywhere. (Even though it was a 2 12 game, time on the clock was not an issue for either of us.)
After 48...Bxf6 White's King heads for – h1!
However, this is one joke too many.

7.f4 d6 8.fxe5 dxe5 9.Qh3+
9...Ke7 10.Qg3 Kd6 11.Qd3+ Ke7 12.Qg3 Ke6 13.Qh3+ Kf7 14.Qh5+ Ke6 15.Qh3+ draw



Black can even ignore the threat of h4-h5, trapping his Bishop.



"and later drawn"