Benko Gambit

The Benko Gambit (1.d4 Nf6 2.c4 c5 3.d5 b5) has been around since the 1930s.  In the USSR, it was called the Volga Gambit and plyed by Opocensky in the 1940s.  Pal Benko started playing and analyzing it in the 1960s, and wrote his book, The Benko Gambit, in 1973.  Black gives up a pawn for quick queenside development.  However, in this game, White give the pawn back and gets a good attack in the center.  White finally draws out the Black king and finds a forced mate.