Sicilian Defense
At 1400–1799 Elo, theory ends around half-move 13. The move that leaves it is a mistake in 13% of cases, 4.6 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 139911half-movehalf of the games: 9 to 14
- 1400–179913half-movehalf of the games: 10 to 15
- 1800+14half-movehalf of the games: 12 to 17
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 theory4.2%
- The move that leaves it18.7%
- After it15.4%
4.5× the risk of a move inside theory
1400–1799
- Inside theory2.9%
- The move that leaves it13.4%
- After it11.3%
4.6× the risk of a move inside theory
1800+
- Inside theory1.3%
- The move that leaves it8.6%
- After it7.7%
6.5× 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 c5 2. d4 Nc639,871 played, 10.5 points lost
- 1. e4 c5 2. Nf3 Nc6 3. d4 e622,382 played, 10.9 points lost
- 1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 g611,093 played, 10.9 points lost
- 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 e69,034 played, 18.2 points lost
- 1. e4 e5 2. Nf3 c58,804 played, 12.9 points lost
- 1. e4 c5 2. Bc4 Nc6 3. Bxf7+8,190 played, 22.8 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.