Diemer-Duhm Gambit

	a	b	c	d	e	f	g	h
8									8
7									7
6									6
5									5
4									4
3									3
2									2
1									1
	a	b	c	d	e	f	g	h

The Diemer-Duhm Gambit is a variation of the French Defense and is characterized by the moves^[1][2][3]

1. e4 e6

2. d4 d5

3. c4

The Diemer-Duhm Gambit is also a variation of the Blackmar-Diemer Gambit declined with the move order 1.d4 d5 2.e4 e6 3.c4.

The Diemer-Duhm Gambit is named after the German master Emil Josef Diemer and the German-Swiss master Andreas Duhm.

References

1. ^ Jyrki Heikkinen : Diemer-Duhm Gambit
2. ^ Paul Keres, Klassisches Spanisch bis Französich, Sportverlag Berlin, 1976, p. 308
3. ^ Eric Schiller, Gambit Chess Openings, Cardoza Publishing, 2002, pp. 66-67