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 10.d4 opens the Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... 10.d4, ECO C95. Across rating levels it shows up in 121,225 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... Nb8. Among the most prolific White practitioners are Alexei Shirov (22 games), Mikhail Tal (21 games), Viswanathan Anand (21 games). Black-side regulars include Boris V Spassky (56 games), Krishnan Sasikiran (47 games), Svetozar Gligoric (42 games).
Performance Across Rating Levels
How well the Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... 10.d4 works depends on what level you're playing at. Among 1200-rated players, it appears in 0.00% of games — 250 of them on record — with White winning 54% and Black 40.4%. By 1800, popularity is 0.00% and White's score is 47.4% to Black's 47%. Among 2500-rated players the line appears in 0.06% of games and draws spike to 9.7%, indicating tight preparation. White's edge erodes by 4.9pp 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 Nbd7, played 70% of the time. There are 4 other moves seeing meaningful share, and 90% of games stick to established theory. Entropy: 1.58. By 2500, Nbd7 dominates at 99.9% of replies; only 1 viable alternatives remain and 100% of moves are theory. Entropy drops to 0.01. That entropy collapse is the signature of a line where preparation pays off: at the top, players know the best move and play it.
Common Mistakes
- Neglecting development — It can feel productive to make extra pawn moves early, but falling behind in piece development is what loses most amateur games — especially in open positions where active pieces find squares fast.
- Playing without a plan — Each Ruy Lopez, Closed Defence: 1.e4 e5 2.Nf3... 10.d4 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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