What is this opening ?

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kco

Which opening could this position come from ?

Chess_Enigma

My bet is some weird cole gambit?

eaglex

kco

Thanks chess_enigma. I'll keep that in mind eaglex thanks.

Conquistador

It looks like a Blackmar-Diemer Gambit Declined.

1.d4 d5 2.e4 dxe4 3.f3 g6 4.c3

RabbitCold

It looks like a gambit like the blackmar, but c3 doesnt seem active enough...

trentthechessnut

I sometimes use this setup when i'm playing lightning against the french (and yes I sometimes play the BDG!)