Ruy Lopez
At 1400–1799 Elo, theory ends around half-move 14. The move that leaves it is a mistake in 15% of cases, 4.4 times as often as a move inside it.
Where theory ends
Half-move at which a game leaves what at least 100 games played. Half of all games end between the two outer numbers.
- up to 139913half-movehalf of the games: 11 to 15
- 1400–179914half-movehalf of the games: 12 to 16
- 1800+16half-movehalf of the games: 13 to 19
How risky the exit is
Share of moves that lose at least 10 points of winning chances, in the same stretch of the game (half-moves 8 to 24).
up to 1399
- Inside theory6.3%
- The move that leaves it23.5%
- After it16.4%
3.7× the risk of a move inside theory
1400–1799
- Inside theory3.4%
- The move that leaves it14.9%
- After it11.6%
4.4× the risk of a move inside theory
1800+
- Inside theory1.4%
- The move that leaves it8.9%
- After it7.5%
6.2× the risk of a move inside theory
Most common mistakes inside theory
Moves the engine rates down although many players choose them. The last move of each line is the mistake, the loss is the mean in points of winning chances.
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. c3 d612,750 played, 12.2 points lost
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 d58,349 played, 10.3 points lost
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 a66,692 played, 10.7 points lost
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 f6 4. Bxc66,607 played, 11.7 points lost
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 a6 5. Ba45,826 played, 10.9 points lost
- 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Bc5 5. c3 d64,773 played, 23.3 points lost
Where does your theory end?
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Opening names from the Lichess opening database (CC0). A game belongs to the most specific named opening it reaches within 39 half-moves.