Benko Gambit

The Benko Gambit is a chess opening characterised by the move 3...b5 in the Benoni Defense arising after:

1. d4 Nf6
2. c4 c5
3. d5 b5


Read more about Benko Gambit:  Origin and Predecessors, Theory, Use, Trivia, Encyclopaedia of Chess Openings