Polish Opening
At 1400–1799 Elo, theory ends around half-move 8. The move that leaves it is a mistake in 4% of cases, 28.6 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 13997half-movehalf of the games: 5 to 9
- 1400–17998half-movehalf of the games: 6 to 10
- 1800+8half-movehalf of the games: 7 to 10
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
Not enough moves for a reliable number.
1400–1799
- Inside theory0.1%
- The move that leaves it4.3%
- After it8.6%
28.6× the risk of a move inside theory
1800+
- Inside theory0.1%
- The move that leaves it2.4%
- After it5.7%
22.9× 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. b4 e5 2. Bb2 Nc618,367 played, 10.9 points lost
- 1. b4 e5 2. Bb2 Nc6 3. b5 Nd4 4. e3 Nxb54,750 played, 18 points lost
- 1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nc61,827 played, 34.3 points lost
- 1. b4 e5 2. Bb2 Nc6 3. b5 Nb41,328 played, 14.5 points lost
- 1. b4 e6 2. Bb2 Bxb41,324 played, 33.8 points lost
- 1. b4 e5 2. Bb2 Bxb4 3. Bxe5 d61,052 played, 36.4 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.