Modern Defense Beefeater Variation (1.d4 g6 2.c4 Bg7 3.Nc3 c5 4.d5 Bxc3+ 5.bxc3 f5) Chess Puzzles

The “modern defense beefeater variation” is a Modern Defense sideline defined by a specific, aggressive setup where Black commits pieces/pawns in a way that resembles the Beefeater motif (a sharp, tactical posture rather than a slow setup). However, I don’t know the exact, canonical move order that uniquely distinguishes this variation from its sibling Modern Defense branches, and I don’t want to invent a move list. For an intermediate player, the practical meaning is that Black aims for dynamic play with a clear piece placement and pawn structure that supports counterplay rather than immediat