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Opening

Center Game

At 1400–1799 Elo, theory ends around half-move 11. The move that leaves it is a mistake in 20% of cases, 3.5 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: 9 to 12
  • 1400–1799
    11
    half-move
    half of the games: 9 to 13
  • 1800+
    12
    half-move
    half of the games: 10 to 14

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 theory7.9%
  • The move that leaves it25.8%
  • After it19.9%

3.3× the risk of a move inside theory

1400–1799

  • Inside theory5.8%
  • The move that leaves it20.0%
  • After it15.6%

3.5× the risk of a move inside theory

1800+

  • Inside theory3.5%
  • The move that leaves it16.1%
  • After it12.6%

4.6× 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. 1. e4 e5 2. d4 Nf633,579 played, 13.4 points lost
  2. 1. e4 e5 2. d4 f627,341 played, 13.6 points lost
  3. 1. e4 e5 2. d4 exd4 3. f419,269 played, 11.5 points lost
  4. 1. d4 e5 2. e414,439 played, 11.2 points lost
  5. 1. e4 e5 2. d4 f6 3. dxe5 fxe59,580 played, 27.6 points lost
  6. 1. e4 e5 2. d4 Bd67,696 played, 10.8 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.