Every Russian Schoolboy Knows
Revolution Revisited - Part 13: French with 3.e5
Kasparov gives his stamp of approval to the popular 6.a3 line, but in modern practice Black sometimes try to anticipate it by changing the move order in favor of 5...Bd7, instead of the routine 5...Qb6. It turns out he can use it to attack the white pawn chain from the front with ...f7-f6. While this idea contradicts the classic teachings of Nimzowitch that call for aiming at the base of a pawn chain, nevertheless I find it interesting.