Ruy Lopez: Steinitz Defense: what should White play?

In the Ruy Lopez: Steinitz Defense, White faces a classic central tension where Black has broken the pin on the c6 knight with d7. The engine's highest-evaluated option is Bxc6 (+0.91), which exchanges the bishop to double Black's pawns or force pieces onto passive squares. While the space-gaining d5 (+0.63) is the most frequent choice in recorded games, Bxc6 offers White the cleanest route to an enduring central and structural edge.

Strategic Impact of Bxc6

The exchange Bxc6 has been chosen in 24.5% of games (148K recorded) and addresses Black's setup immediately. Instead of maintaining an unresolved pin, White eliminates the knight before Black can consolidate the center. An illustrative continuation shows how play develops after the exchange: Bxc6 Bxc6 Nc3 f6 Qe2 Ne7. In this path, White steadily develops the queen and knight while Black adopts a solid, albeit somewhat restricted, defensive posture to protect the e5 pawn.

Popular Alternatives

The most widely played option in the database is d5, appearing in 37.8% of games (228K recorded) with an evaluation of +0.63. It closes the center and sends the game toward positions exemplified by d5 Nb8 Bd3 a5 h3 Na6. Natural developing moves also retain an advantage: Nc3 (+0.64) is chosen in 16.5% of games (100K recorded), and the standard O-O (+0.39) accounts for 18.2% of games (110K recorded). A quieter setup with c3 (+0.47) is seen in 3.0% of encounters (18K recorded), typically leading to c3 Nf6 Bd3 g6 h3 Bg7. White retains healthy positional control across all of these main branches.