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King's Gambit Accepted: Bishop's Gambit, Maurian Defense

231K games from Lichess · Updated January 2026

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3...Nc6
Analyze this line move by move

Black expected score · All ratings · All speeds

46.6%

40%55%
Floor46.4%

the worst score you would still get, 90% confident. At best 46.8%.

Measured over 231K games at this level and clock.

Tough Sellloses more often than it wins at this level

Black comes out behind here — there are better weapons in the list.

Outcomes for Black

Draw 2.7 · Score = win + ½ of the draws · 231K games

Rank among the families Black can choose here
not ranked — this is a variation, not a family
Games in this context
231K
Best context
49.7% at 0-999 Blitz
Worst context
45.6% at 1600-1799 Bullet
Average game length
29 moves
Games that end decisively
97.3%
Draws
2.7%

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

Time-Control Swing

Max swing: 11.4% · UltraBullet best · Rapid worst

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: 52.2% at 0-999, 45.2% at 2500+.

RatingUBBulleBlitzRapidClass
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

  • 0-999 rating, UltraBullet: 64.9% expected score (12 games)
  • 0-999 rating, Bullet: 48.6% expected score (4,626 games)
  • 0-999 rating, Blitz: 49.7% expected score (2,733 games)
  • 0-999 rating, Rapid: 47.8% expected score (799 games)
  • 0-999 rating, Classical: 50.0% expected score (2 games)
  • 1000-1199 rating, UltraBullet: 45.4% expected score (20 games)
  • 1000-1199 rating, Bullet: 46.9% expected score (6,492 games)
  • 1000-1199 rating, Blitz: 46.2% expected score (7,962 games)
  • 1000-1199 rating, Rapid: 48.4% expected score (1,951 games)
  • 1000-1199 rating, Classical: 51.9% expected score (25 games)
  • 1200-1399 rating, UltraBullet: 34.1% expected score (33 games)
  • 1200-1399 rating, Bullet: 46.0% expected score (10,668 games)
  • 1200-1399 rating, Blitz: 45.8% expected score (18,003 games)
  • 1200-1399 rating, Rapid: 46.4% expected score (4,372 games)
  • 1200-1399 rating, Classical: 51.8% expected score (111 games)
  • 1400-1599 rating, UltraBullet: 33.1% expected score (40 games)
  • 1400-1599 rating, Bullet: 45.8% expected score (12,705 games)
  • 1400-1599 rating, Blitz: 46.3% expected score (30,655 games)
  • 1400-1599 rating, Rapid: 47.1% expected score (7,689 games)
  • 1400-1599 rating, Classical: 43.4% expected score (292 games)
  • 1600-1799 rating, UltraBullet: 33.2% expected score (64 games)
  • 1600-1799 rating, Bullet: 45.6% expected score (11,262 games)
  • 1600-1799 rating, Blitz: 46.8% expected score (35,611 games)
  • 1600-1799 rating, Rapid: 46.2% expected score (10,684 games)
  • 1600-1799 rating, Classical: 46.0% expected score (429 games)
  • 1800-1999 rating, Bullet: 46.9% expected score (9,820 games)
  • 1800-1999 rating, Blitz: 46.9% expected score (22,879 games)
  • 1800-1999 rating, Rapid: 46.9% expected score (8,202 games)
  • 1800-1999 rating, Classical: 42.8% expected score (226 games)
  • 2000-2199 rating, Bullet: 47.6% expected score (4,883 games)
  • 2000-2199 rating, Blitz: 47.0% expected score (9,548 games)
  • 2000-2199 rating, Rapid: 46.0% expected score (2,789 games)
  • 2000-2199 rating, Classical: 54.7% expected score (63 games)
  • 2200-2499 rating, Bullet: 46.8% expected score (2,444 games)
  • 2200-2499 rating, Blitz: 48.2% expected score (2,752 games)
  • 2200-2499 rating, Rapid: 52.9% expected score (262 games)
  • 2200-2499 rating, Classical: 38.9% expected score (3 games)
  • 2500+ rating, Bullet: 49.8% expected score (234 games)
  • 2500+ rating, Blitz: 49.1% expected score (106 games)
  • 2500+ rating, Rapid: 36.7% expected score (6 games)

Related Openings

Parent
King's Gambit Accepted
43.1%
Variations (5)
King's Gambit Accepted: MacLeod Defense
53.4%
King's Gambit Accepted: Fischer Defense
52.1%
King's Gambit Accepted: King's Knight's Gambit
55.3%
King's Gambit Accepted: Modern Defense
51.3%
King's Gambit Accepted: Schallopp Defense
53.3%
Analyze King's Gambit Accepted: Bishop's Gambit, Maurian Defense PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the King's Gambit Accepted: Bishop's Gambit, Maurian Defense scores 46.6% for Black — we are 90% confident the real figure is between 46.4% and 46.8% — from 231K 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
231K+ 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: Bishop's Gambit, Maurian Defense win rate?

Playing the King's Gambit Accepted: Bishop's Gambit, Maurian Defense, Black wins 45.2%, draws 2.7% and loses 52.1%. Counting a draw as half a point, that is an Expected Score of 46.6%. It rests on 231K rated games from Lichess.

At what rating does the King's Gambit Accepted: Bishop's Gambit, Maurian Defense perform best?

The King's Gambit Accepted: Bishop's Gambit, Maurian Defense performs best for Black at 0-999, with an Expected Score of 48.9% (8.2K games) and the highest Floor of any rating with enough games to read.

Is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense better in blitz or rapid?

For Black, the King's Gambit Accepted: Bishop's Gambit, Maurian Defense scores about the same in both: an Expected Score of 46.6% in Blitz (130K games) against 46.8% in Rapid (37K games).

How sharp is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense?

The King's Gambit Accepted: Bishop's Gambit, Maurian Defense has a sharpness score of 97.3 (very decisive), meaning 97.3% of games end decisively. Average game length is 29 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 0-999?

At 0-999, Black wins 48.1%, draws 1.5% and loses 50.3%. Counting a draw as half a point, that is an Expected Score of 48.9%. It rests on 8.2K Lichess games, which average 22 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 1000-1199?

At 1000-1199, Black wins 45.8%, draws 1.8% and loses 52.4%. Counting a draw as half a point, that is an Expected Score of 46.7%. It rests on 16K Lichess games, which average 25 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 1200-1399?

At 1200-1399, Black wins 44.9%, draws 2.1% and loses 53.1%. Counting a draw as half a point, that is an Expected Score of 45.9%. It rests on 33K Lichess games, which average 27 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 1400-1599?

At 1400-1599, Black wins 45.1%, draws 2.3% and loses 52.6%. Counting a draw as half a point, that is an Expected Score of 46.3%. It rests on 51K Lichess games, which average 29 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 1600-1799?

At 1600-1799, Black wins 45.0%, draws 2.9% and loses 52.1%. Counting a draw as half a point, that is an Expected Score of 46.5%. It rests on 58K Lichess games, which average 30 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 1800-1999?

At 1800-1999, Black wins 45.3%, draws 3.1% and loses 51.6%. Counting a draw as half a point, that is an Expected Score of 46.9%. It rests on 41K Lichess games, which average 32 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 2000-2199?

At 2000-2199, Black wins 45.2%, draws 3.7% and loses 51.2%. Counting a draw as half a point, that is an Expected Score of 47.0%. It rests on 17K Lichess games, which average 33 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 2200-2499?

At 2200-2499, Black wins 45.6%, draws 4.4% and loses 50.0%. Counting a draw as half a point, that is an Expected Score of 47.8%. It rests on 5.5K Lichess games, which average 34 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate at 2500+?

At 2500+, Black wins 43.6%, draws 11.4% and loses 45.0%. Counting a draw as half a point, that is an Expected Score of 49.3%. It rests on 346 Lichess games, which average 39 moves.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate in UltraBullet?

In UltraBullet, Black wins 36.7%, draws 0.3% and loses 63.0%. Counting a draw as half a point, that is an Expected Score of 36.9%. It rests on 169 Lichess games.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate in Bullet?

In Bullet, Black wins 45.6%, draws 1.8% and loses 52.7%. Counting a draw as half a point, that is an Expected Score of 46.5%. It rests on 63K Lichess games.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate in Blitz?

In Blitz, Black wins 45.1%, draws 2.9% and loses 52.0%. Counting a draw as half a point, that is an Expected Score of 46.6%. It rests on 130K Lichess games.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate in Rapid?

In Rapid, Black wins 45.1%, draws 3.3% and loses 51.6%. Counting a draw as half a point, that is an Expected Score of 46.8%. It rests on 37K Lichess games.

What is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense win rate in Classical?

In Classical, Black wins 43.6%, draws 4.4% and loses 52.0%. Counting a draw as half a point, that is an Expected Score of 45.8%. It rests on 1.2K Lichess games.

Is the King's Gambit Accepted: Bishop's Gambit, Maurian Defense a good opening?

The King's Gambit Accepted: Bishop's Gambit, Maurian Defense is hard work for Black — it favours White. Across all ratings, Black wins 45.2% of its games and loses 52.1%. It performs best at 0-999. Your results depend on your rating, time control, and how well you know the typical plans.