IM Bindi Cheng(CAN) was on both sides of the Benoni in the North American Open Las Vegas 2012. Here is one of his games.

Hammer,J (2633)-Cheng,Bindi (2397)
Benoni 7.Bf4 [A61]
22nd North American Open Las Vegas USA (7.4), 29.12.2012

Position 1
White has a stable endgame edge to work with. Black’s pawn structure is weak and the passed a-pawn is a key factor. How should black defend?

• 25…d5 liquidating pawns
• 25…Ra8 activating the rook
• 25…Nc6 activating the knight
• -Something else