Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...a6/4. Ba4/4...d6

= Steinitz Deferred = This move is a good developing move for black. It re-enforces the e-pawn, it allows the c8 bishop to readily join the battle and reserves the option of an f5 push. It does, however, impede the progress of the f8 bishop. This move is much more popular than the true Steinitz Defence.

Theory table

 * 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6