i am going through "Sorceror's Apprentice" and i am amazed by bronstein. i even half-thought about taking up the
Old Indian. half-thought.
an interesting line is from the game
Botwinnik-Bronstein, World Championship (17) 1951. After 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6! with a similar idea to the Benko Gambit where the light squared bishop trades off its counterpart on f1.