The Benoni Defense is a group of
chess openings generally characterized by the opening moves 1.d4 c5 2.d5 although Black's ...c5 and White's answer d5, is often delayed until move 2 or 3. The most usual opening sequence for the Benoni is 1.d4 Nf6 2.c4 c5 3.d5. Black can then sacrifice a pawn by 3...b5 (leading to the
Benko Gambit). If Black elects not to sacrifice then 3...d6, 3...e6 or 3...g6 are common moves, leading to the mainline Benonis.
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