An entry in the Encyclopedia of Chess Openings (ECO B21), reached after 6 half-moves: 1. e4 c5 2. d4 cxd4 3. c3 dxc3.
1. e4 c5 2. d4 cxd4 3. c3 dxc3
2 replies continue into sub-variations from this position. Click any to drill deeper.