Owen Defense: what to play after Bb7?

In the Owen Defense after Black fianchettoes the light-squared bishop, White's most precise continuation is Bd3, directly defending the attacked e4 while developing a minor piece toward the center. This move yields White an engine evaluation of +0.85 across over 20.4 million recorded positions, keeping a solid central grip while blunting Black's long-diagonal pressure on the e4 pawn.

The Strategic Role of Bd3

The move Bd3 serves both defensive and developmental purposes against Black's flank strategy. By supporting e4 with the bishop rather than a knight, White keeps the c-pawn free to bolster the d4-square later if needed. In the illustrative engine variation Bd3 d5 e5 Qd7 c3 Ba6, White responds to Black's central counter by gaining space with the e-pawn advance and maintaining a sturdy pawn chain.

Developing the Queenside Knight

White can also defend the center naturally with Nc3, which holds an engine evaluation of +0.83. This classical approach rapidly brings pieces into play and contests critical central squares. An illustrative continuation runs Nc3 e6 Bd3 Bb4 Ne2 d5, where Black seeks active piece play by pinning the knight, leading to dynamic central skirmishes.

Alternative Setups

Other less common options for White include Nd2 (+0.62), Qd3 (+0.52), and Qf3 (+0.34). The queen moves guard the e4-pawn early, though early queen excursions can invite counterplay, as seen after Qf3 e6 Nc3 f5 Qg3 fxe4. While playable, these alternatives offer lower engine evaluations than the classical piece development provided by the bishop and knight moves.