About this opening
Benoni Defense: Benoni-Indian Defense is an opening in the Encyclopedia of Chess Openings,
classified under code A43. ECO group A (A00–A99)
covers flank and irregular openings, including the English, Bird, Réti and Dutch defences. This particular variation is reached
after 4 half-moves from the
starting position, with the move sequence 1. d4 c5 2. d5 Nf6.
It belongs to the Benoni Defense family. Within that family this is a sub-variation (the Benoni-Indian Defense line).
The opening sequence in prose form: 1.d4 c5, 2.d5 Nf6. From this position exactly one named continuation is recorded in the encyclopaedia.