King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense
3.1K games from Lichess · Updated January 2026
Black expected score · All ratings · All speeds
53.5%
the worst score you would still get, 90% confident. At best 54.9%.
Measured over 3.1K games at this level and clock.
A strong choice for Black at this level and clock.
Outcomes for Black
Draw 2.8 · Score = win + ½ of the draws · 3.1K games
- Rank among the families Black can choose here
- not ranked — this is a variation, not a family
- Games in this context
- 3.1K
- Best context
- 53.6% at 1800-1999 Blitz
- Worst context
- 49.8% at 2000-2199 Blitz
- Average game length
- 27 moves
- Games that end decisively
- 97.2%
- Draws
- 2.8%
Best and worst are the strongest and weakest squares with at least 500 games behind them. The table further down shows every square, including thinner ones.
Extra Analysis
Deep-dive datasets for this opening
Where it holds · Black score by rating × clock
Green is clearly ahead for Black, grey is around even, red is behind. Tap a cell to measure there, and again to clear. It falls away as the rating rises: 56.7% at 1000-1199, 46.4% at 2500+.
| Rating | UB | Bulle | Blitz | Rapid | Class |
|---|---|---|---|---|---|
| 0-999 | — | — | — | — | — |
| 1000-1199 | — | — | |||
| 1200-1399 | — | — | |||
| 1400-1599 | — | ||||
| 1600-1799 | — | ||||
| 1800-1999 | — | ||||
| 2000-2199 | — | ||||
| 2200-2499 | — | ||||
| 2500+ | — |
Expected score matrix by rating bracket and time control
- 1000-1199 rating, Bullet: 50.0% expected score (2 games)
- 1000-1199 rating, Blitz: 50.0% expected score (2 games)
- 1000-1199 rating, Rapid: 70.0% expected score (1 games)
- 1200-1399 rating, Bullet: 20.6% expected score (7 games)
- 1200-1399 rating, Blitz: 58.5% expected score (22 games)
- 1200-1399 rating, Rapid: 38.9% expected score (3 games)
- 1400-1599 rating, Bullet: 49.0% expected score (48 games)
- 1400-1599 rating, Blitz: 69.2% expected score (61 games)
- 1400-1599 rating, Rapid: 82.9% expected score (35 games)
- 1400-1599 rating, Classical: 61.2% expected score (3 games)
- 1600-1799 rating, Bullet: 43.9% expected score (80 games)
- 1600-1799 rating, Blitz: 61.5% expected score (204 games)
- 1600-1799 rating, Rapid: 76.1% expected score (58 games)
- 1600-1799 rating, Classical: 67.7% expected score (7 games)
- 1800-1999 rating, Bullet: 43.8% expected score (120 games)
- 1800-1999 rating, Blitz: 53.6% expected score (577 games)
- 1800-1999 rating, Rapid: 62.7% expected score (160 games)
- 1800-1999 rating, Classical: 83.4% expected score (9 games)
- 2000-2199 rating, Bullet: 56.0% expected score (217 games)
- 2000-2199 rating, Blitz: 49.8% expected score (757 games)
- 2000-2199 rating, Rapid: 58.9% expected score (172 games)
- 2000-2199 rating, Classical: 67.7% expected score (7 games)
- 2200-2499 rating, Bullet: 38.8% expected score (146 games)
- 2200-2499 rating, Blitz: 48.2% expected score (357 games)
- 2200-2499 rating, Rapid: 62.2% expected score (56 games)
- 2200-2499 rating, Classical: 30.0% expected score (1 games)
- 2500+ rating, Bullet: 59.1% expected score (15 games)
- 2500+ rating, Blitz: 46.6% expected score (13 games)
- 2500+ rating, Rapid: 30.0% expected score (1 games)
- 2500+ rating, Classical: 50.0% expected score (1 games)
Related Openings
Methodology
Across every rating and clock, the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense scores 53.5% for Black — we are 90% confident the real figure is between 52.0% and 54.9% — from 3.1K Lichess games. Win rate, draw rate and loss rate come from games played December 2023 to November 2025.
How the figures are made
- Whose games these are
- 3.1K+ rated games played on Lichess (2023-12 to 2025-11). The games are Lichess’s and free for anyone to use. What is ours is the reading of them. Last rebuilt January 2026.
- Which games we count
- Rated games only — nothing casual.
- Both players within 200 rating points of each other. A mismatch tells you about the gap, not about the opening.
- At least 2 moves played.
- A game is filed under White’s rating.
- Why every number comes with a range
- A number off a few hundred games is a guess. The same number off millions is a fact. The range is what tells them apart, and it is what the lists rank on — so an opening cannot reach the top on a lucky run of forty games. The more games behind a figure, the narrower its range.
- How much we need before we say anything
- An opening page needs 100 games. A gambit needs 50 games at a rating before we will say whether it pays there. The chaos and trap lists need 500 games overall and 250 games at one rating or clock.
Frequently Asked Questions
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate?
Playing the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense, Black wins 52.1%, draws 2.8% and loses 45.2%. Counting a draw as half a point, that is an Expected Score of 53.5%. It rests on 3.1K rated games from Lichess.
At what rating does the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense perform best?
The King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense performs best for Black at 1400-1599, with an Expected Score of 66.2% (147 games) and the highest Floor of any rating with enough games to read.
Is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense better in blitz or rapid?
For Black, the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense scores higher in Rapid: an Expected Score of 52.5% in Blitz (2.0K games) against 64.4% in Rapid (486 games).
How sharp is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense?
The King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense has a sharpness score of 97.2 (very decisive), meaning 97.2% of games end decisively. Average game length is 27 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate at 1400-1599?
At 1400-1599, Black wins 65.0%, draws 2.4% and loses 32.7%. Counting a draw as half a point, that is an Expected Score of 66.2%. It rests on 147 Lichess games, which average 23 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate at 1600-1799?
At 1600-1799, Black wins 59.8%, draws 0.7% and loses 39.5%. Counting a draw as half a point, that is an Expected Score of 60.2%. It rests on 349 Lichess games, which average 23 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate at 1800-1999?
At 1800-1999, Black wins 53.2%, draws 2.1% and loses 44.7%. Counting a draw as half a point, that is an Expected Score of 54.3%. It rests on 866 Lichess games, which average 26 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate at 2000-2199?
At 2000-2199, Black wins 50.7%, draws 3.5% and loses 45.8%. Counting a draw as half a point, that is an Expected Score of 52.5%. It rests on 1.2K Lichess games, which average 29 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate at 2200-2499?
At 2200-2499, Black wins 45.3%, draws 3.5% and loses 51.2%. Counting a draw as half a point, that is an Expected Score of 47.1%. It rests on 560 Lichess games, which average 29 moves.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate in Bullet?
In Bullet, Black wins 46.4%, draws 1.6% and loses 51.9%. Counting a draw as half a point, that is an Expected Score of 47.3%. It rests on 635 Lichess games.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate in Blitz?
In Blitz, Black wins 50.9%, draws 3.2% and loses 45.9%. Counting a draw as half a point, that is an Expected Score of 52.5%. It rests on 2.0K Lichess games.
What is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense win rate in Rapid?
In Rapid, Black wins 63.1%, draws 2.6% and loses 34.4%. Counting a draw as half a point, that is an Expected Score of 64.4%. It rests on 486 Lichess games.
Is the King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense a good opening?
The King's Gambit Accepted: Kieseritzky Gambit, Anderssen Defense is good for Black. Across all ratings, Black wins 52.1% of its games and loses 45.2%. It performs best at 1400-1599. Your results depend on your rating, time control, and how well you know the typical plans.