Basically, giving up material for non-material compensation, normally out if the opening, can be considered a gambit.
So, giving up a pawn out if the opening for faster development would likely count. Many gambits don't regain the material deficit until later in the game. Though, some gambits may be considered dubious.
When is a gambit officially a gambit?
I mean who decides and what are the rules?
Typically sacing a pawn off early in an opening constitutes a gambit opening.
But how many moves?
I mean if you follow main lines best play and you end up sacing a pawn off in move 8, does that count?
If it's a main line and it's clearly a sac?
Example:
r1bqr1k1/pppp1ppp/2n2n2/8/1b2P3/2N1Q3/PPPB1PPP/2KR1BNR w -
C22: Center Game, Berger Variation, 5.Nc3 Bb4 6.Bd2 O-O 7.O-O-O Re8
the sac being a main line move, it's clearly intentional.
8. Qg3,Rxe4
White never gets the pawn back before all known variations of the opening ends?
(or any form of real compensation for that matter i think?)
Does this make it a gambit? As i say, "When is a gambit officially a gambit?".
What are the rules?