I usually play the exchange variation. Therorists have tried to crackthe position, but I feel like this is the strongest as you mess up white's pawn structure.
What moron is going to give you two pieces for the Bishop? 5.bxc3
And there is no "Exchange" variation in the Nimzo-Indian. 4.a3 is the Saemisch Variation.
I usually play the exchange variation. Therorists have tried to crackthe position, but I feel like this is the strongest as you mess up white's pawn structure.