Diemer–Duhm Gambit (1.d4 d5 2.c4 e6 3.e4) games of Jyrki Heikkinen
Queen's Gambit Declined, Tarrasch (3...c5)
Semi-Slav Marshall (3...c6)
Rare miscellaneous (3... *)
Bb4 (3...dxe4 4.Nc3 Bb4)
f5 (3...dxe4 4.Nc3 f5)
Kmoch Variation (3...dxe4 4.Nc3 Nf6 5.f3 Bb4)
Keres Variation (3...dxe4 4.Nc3 Nf6 5.f3 c5)
Charousek Variation (3...dxe4 4.Nc3 Nf6 5.f3 Be7)
Lichess
PGN
BDG
DDG
gambits
other