Agincourt Defense, Tarrasch Defense

The Tarrasch Defense is a branch of the Neo-Catalan in which Black answers White's kingside fianchetto with 4...c5 and 5...Nc6, occupying the center with pawns on c5, d5 and e6. White's 5. b3 prepares a second fianchetto on b2. After 6. O-O Be7, 7. Bb2 is by far the most common move and scores well for White, with 7. e3 and 7. cxd5 the main alternatives. The engine rates the position as roughly balanced and lists cxd5 and d4 among its preferred moves.