The Benko Gambit is characterized by the move 3...b5 in the Benoni Defense arising after:
1. d4 Nf6
2. c4 c5
3. d5 b5
Black's compensation for the pawn takes several forms. First, White, who is already behind in development, must solve the problem of developing the f1-bishop. Black also obtains fast development and good control of the a1–h8 diagonal and can exert pressure down the half-open a- and b-files. These are benefits which can last well into the endgame and so, unusual for a gambit, Black does not generally mind if queens are exchanged; indeed, exchanging queens can often remove the sting from a kingside attack by White. - Wikipedia
The "Benko Gambit" group is exclusively devoted to learning the Benko Gambit in a cooperative learning environment through our Forums, Vote Chess discussions, Team Matches, and Tournaments.
http://www.chess.com/tournament/thematic-tournament---benko-gambit-1200-1400
http://www.chess.com/tournament/thematic-tournament---benko-gambit-1400-1600
http://www.chess.com/tournament/thematic-tournament---benko-gambit-1600-1800
http://www.chess.com/tournament/thematic-tournament---benko-gambit-1800-2000
http://www.chess.com/tournament/thematic-tournament---benko-gambit-2000-2200
The Benko Gambit is characterized by the move 3...b5 in the Benoni Defense arising after:
Black's compensation for the pawn takes several forms. First, White, who is already behind in development, must solve the problem of developing the f1-bishop. Black also obtains fast development and good control of the a1–h8 diagonal and can exert pressure down the half-open a- and b-files. These are benefits which can last well into the endgame and so, unusual for a gambit, Black does not generally mind if queens are exchanged; indeed, exchanging queens can often remove the sting from a kingside attack by White. - Wikipedia