Great things indeed. In this database Botvinnik has a god-like record of <+15 =5 -0> in 20 games playing the Black side of the Pirc Defense! Yes, that is not a typo: Botvinnik scored <87.5%(!)> (17.5/20) as Black using the Pirc Defense.

Absolutely!

Position after 35 f2-d2? e7-c5!!:

click for larger view

The obvious threats are 36 ... d3xd2, exploiting the <ABSOLUTE PIN> of the White e3-bishop to the White g1-king along the g1-a7 diagonal by the Black c5-bishop, and also simply capturing twice on e3 with 36 ... c5xe3+ 37 d2xe3 d3xe3.

What is not so obvious is that 35 ... e7-c5!! wins at least a whole piece! Why? Because after 36 d2xd3 c4xd3, Black cannot simultaneously meet the threat to the <HANGING> White e3-bishop -and- stop the passed Black d3-pawn (<POWERFUL PASSED PAWN>)from promoting.

(VAR) Position after 36 d2xd3 c4xd3:

click for larger view

White's best attempts to meet both of these threats is 37 g1-f2 d3-d2! <pin> f2-e2 c5xe3 <overworked>, losing a whole piece.

(VAR) Position after 37 g1-f2 d3-d2! f2-e2 c5xe3:

click for larger view