Blackmar Diemer Gambit Lemberger Countergambit (1.d4 d5 2.e4 dxe4 3.Nc3 e5) Chess Puzzles

The blackmar diemer gambit lemberger countergambit is a Black response within the Blackmar–Diemer Gambit family where Black tries to turn the initiative back on White after the BDG’s central pawn offer. However, I don’t have a reliably documented, specific move-order that uniquely defines the “Lemberger Countergambit” label in the way major databases do, so I can’t safely provide a precise sequence without risking mixing it up with a sibling variation.