The Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... Nb8 begins with 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d6 9.h3 Nb8 (ECO C94). Across rating levels it shows up in 134,873 recorded games — enough data to map exactly where it succeeds and where it stalls.
History and Notable Players
It arises from the Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... 9.h3. On the White side, Mikhail Tal (29 games), Vlastimil Jansa (25 games), Milan Matulovic (23 games) top the database. Notable Black exponents: Boris V Spassky (62 games), Krishnan Sasikiran (49 games), Svetozar Gligoric (44 games).
Performance Across Rating Levels
Popularity and results vary sharply by rating level. At 1200 Elo, the opening shows up in 0.00% of games (258 samples). White scores 53.1%, Black 40.7%, draws 6.2%. By 1800, popularity is 0.00% and White's score is 47.6% to Black's 46.8%. Among 2500-rated players the line appears in 0.06% of games and draws spike to 9.8%, indicating tight preparation. White's edge erodes by 4.3pp from 1200 to 2500 Elo, suggesting Black's counterplay is easier to find with experience.
Move Diversity and Theory Depth
Looking at move selection shows how forcing — or not — the position really is. At 1200 Elo, the top reply is d4, played 89.9% of the time. There are 1 other moves seeing meaningful share, and 96.5% of games stick to established theory. Entropy: 0.67. By 2500, d4 dominates at 92.6% of replies; only 1 viable alternatives remain and 99.5% of moves are theory. Entropy drops to 0.48.
Main Lines and Variations
The main branches off 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3 d6 9.h3 Nb8 include:
Each branch leads to a different middlegame character — the resulting pawn structure decides what kind of game you get.
Common Mistakes
- Neglecting development — Extra pawn moves in the opening are tempting, especially when you "know the moves". Developing a piece each turn is the simple correction.
- Playing without a plan — Each Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... Nb8 middlegame demands a specific approach. Decide whether the position calls for attack, manoeuvre, or simplification before reaching for a move.
Practice on Chessiverse
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