Ruy Lopez: Morphy Defense: b5 — White's Guide

The Ruy Lopez is about pressure on the e5-pawn and long-term central control. By retreating your bishop to b3 (5.Bb3), you keep it aimed at Black's kingside while avoiding the b5-pawn. Black has spent three tempi on queenside pawn moves (a6, b5) and will often follow up with ...Nf6 or ...Bc5. That queenside expansion gives Black space — but it also weakens the light squares around their king. Your edge comes from faster development and the possibility of a central break with d2-d4. If Black misplaces their pieces chasing your bishop (like ...Na5), you can simply retreat to d5 or c4 and laugh. The statistics confirm the plan works: White scores above 52% against every single popular reply.

Among all moves available to Black, the engine's top choice is 6...Bb7, developing the bishop to the long diagonal. The recommended continuation runs 6...Bb7 7.d3 Nf6 8.O-O. Notice that White is happy to play a quiet, solid setup. You castle kingside, support your centre with d3, and prepare to reroute your knight (perhaps to g3 via Nbd2) or open the centre later. Against 6...Bb7, White's winning percentage sits at 55.3% — right in line with the overall average. The moral: you don't need a flashy refutation. Steady development and sound pawn structure are enough to exploit Black's slight overextension.

Here is a quick look at what Black plays most often and how you should feel about each one:- 6...Nf6 (1,225,334 games — by far the most common). White scores 55.9%. This is the classical main line. Develop naturally: 7.O-O Be7 8.Re1 or 8.d3. Black has nothing special.- 6...Bc5 (551,634 games, White 52.6%). Black puts the bishop on a diagonal that aims at f2. You can respond with 7.O-O or 7.c3 followed by d4. The win rate is slightly lower here, so stay alert to tactical tricks on f2.- 6...d6 (386,038 games, White 53.9%). Black solidifies the centre. You answer with 7.d3 or 7.c3, then develop. The game will be slow and positional — your style.- 6...Na5 (201,964 games, White 55.6%). Black attacks your bishop. Retreat to c4 or d5 and continue developing. You keep your edge without breaking a sweat.

When you are slightly better as White, the temptation is to overpress. Many club players try to punish the ...b5 push immediately with a4 or by winning a pawn, but doing so carelessly can backfire. The real mistake is neglecting development: if you lash out before castling and completing your knight moves, Black's extra queenside space can become active. Trust the +0.42 evaluation. Develop, castle, and only then consider breaks like d2-d4 or a2-a4. The engine's best continuation (7.d3, 8.O-O) shows that simple, classical chess is the most punishing response. Let Black's early pawn moves become a long-term weakness rather than trying to win on the spot.