Page "Indian Defence" Paragraph 39

The Modern Benoni Defence is a risky attempt by Black to unbalance the position and gain active piece play at the cost of allowing White a pawn wedge at d5 and a central majority.

Tal popularised the defence in the 1960s by winning several brilliant games with it, and Bobby Fischer occasionally adopted it, with good results, including a win in his 1972 World Championship match against Boris Spassky.