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Lion Defense is a chess opening that arises after 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7. It is classified B07 in the ECO system, and the position after these moves has white to move.
Each of these is a named opening reached by playing on from 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7. Open any of them to load the position on the board.