Am wondering if there is a definition of a countergambit. My understanding is, a countergambit happens when one side plays a gambit, instead of capturing the pawn, the other side also sacrifices a pawn.
Is my description accurate? Is the following line considered as a counter gambit?
- f4 e5 2. e4
The move e5 is called From's gambit. Instead of capturing the pawn, white develops his king pawn, offering his f4 pawn. Is this considered as a countergambit? (Under a different move order 1. e4 e5 2. f4 it is called king's gambit.)