Opening

Indian Defense

At 1400–1799 Elo, theory ends around half-move 11. The move that leaves it is a mistake in 9% of cases, 5.1 times as often as a move inside it.

All openings

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 1399
10
half-move
half of the games: 8 to 13
1400–1799
11
half-move
half of the games: 9 to 14
1800+
12
half-move
half of the games: 10 to 15

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 theory2.1%
The move that leaves it12.2%
After it14.7%

5.7× the risk of a move inside theory

1400–1799

Inside theory1.7%
The move that leaves it8.7%
After it10.4%

5.1× the risk of a move inside theory

1800+

Inside theory1.0%
The move that leaves it5.8%
After it7.0%

5.9× 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 Nf6 2. d412,933 played, 12.5 points lost
1. d4 Nf6 2. Nc3 g6 3. e4 Bg75,533 played, 10.2 points lost
1. d4 Nf6 2. Nc3 g6 3. Bf4 Bg7 4. e4 d6 5. e54,061 played, 10.3 points lost
1. d4 Nf6 2. Nc3 e53,610 played, 14.4 points lost
1. d4 Nf6 2. Nc3 g6 3. Bf4 Bg7 4. e4 d6 5. e5 dxe53,154 played, 10.5 points lost
1. d4 Nf6 2. Bf4 c5 3. Nf3 cxd4 4. Nxd42,964 played, 26.1 points lost

Where does your theory end?

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More openings

Opening names from the Lichess opening database (CC0). A game belongs to the most specific named opening it reaches within 39 half-moves.