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Dutch Defense: Omega-Isis Gambit

11K games from Lichess · Updated January 2026

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Analyze this line move by move

Black expected score · All ratings · All speeds

42.0%

35%55%
Floor41.2%

the worst score you would still get, 90% confident. At best 42.8%.

Measured over 11K 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 3.1 · Score = win + ½ of the draws · 11K games

Rank among the families Black can choose here
not ranked — this is a variation, not a family
Games in this context
11K
Best context
47.6% at 1400-1599 Bullet
Worst context
37.2% at 0-999 Blitz
Average game length
29 moves
Games that end decisively
96.9%
Draws
3.1%

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

Gambit BreakpointBlack

Peak: −16.8% · Breakpoint: 0-999

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 gets better as the rating rises: 40.1% at 0-999, 42.9% 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: 57.7% expected score (5 games)
  • 0-999 rating, Bullet: 40.9% expected score (449 games)
  • 0-999 rating, Blitz: 37.2% expected score (677 games)
  • 0-999 rating, Rapid: 37.8% expected score (320 games)
  • 0-999 rating, Classical: 27.0% expected score (5 games)
  • 1000-1199 rating, UltraBullet: 38.7% expected score (34 games)
  • 1000-1199 rating, Bullet: 47.1% expected score (407 games)
  • 1000-1199 rating, Blitz: 40.9% expected score (524 games)
  • 1000-1199 rating, Rapid: 35.6% expected score (193 games)
  • 1000-1199 rating, Classical: 54.8% expected score (9 games)
  • 1200-1399 rating, UltraBullet: 40.2% expected score (85 games)
  • 1200-1399 rating, Bullet: 44.1% expected score (659 games)
  • 1200-1399 rating, Blitz: 42.3% expected score (479 games)
  • 1200-1399 rating, Rapid: 34.6% expected score (170 games)
  • 1200-1399 rating, Classical: 36.7% expected score (6 games)
  • 1400-1599 rating, UltraBullet: 51.2% expected score (211 games)
  • 1400-1599 rating, Bullet: 47.6% expected score (824 games)
  • 1400-1599 rating, Blitz: 39.3% expected score (404 games)
  • 1400-1599 rating, Rapid: 35.0% expected score (128 games)
  • 1400-1599 rating, Classical: 25.7% expected score (19 games)
  • 1600-1799 rating, UltraBullet: 36.6% expected score (199 games)
  • 1600-1799 rating, Bullet: 45.6% expected score (1,178 games)
  • 1600-1799 rating, Blitz: 38.1% expected score (343 games)
  • 1600-1799 rating, Rapid: 31.6% expected score (50 games)
  • 1600-1799 rating, Classical: 36.7% expected score (6 games)
  • 1800-1999 rating, UltraBullet: 31.8% expected score (108 games)
  • 1800-1999 rating, Bullet: 45.2% expected score (1,328 games)
  • 1800-1999 rating, Blitz: 40.7% expected score (208 games)
  • 1800-1999 rating, Rapid: 50.0% expected score (21 games)
  • 1800-1999 rating, Classical: 30.0% expected score (1 games)
  • 2000-2199 rating, UltraBullet: 54.3% expected score (22 games)
  • 2000-2199 rating, Bullet: 40.7% expected score (977 games)
  • 2000-2199 rating, Blitz: 30.0% expected score (101 games)
  • 2000-2199 rating, Rapid: 42.4% expected score (5 games)
  • 2200-2499 rating, UltraBullet: 31.9% expected score (4 games)
  • 2200-2499 rating, Bullet: 39.8% expected score (489 games)
  • 2200-2499 rating, Blitz: 71.1% expected score (8 games)
  • 2200-2499 rating, Rapid: 50.0% expected score (2 games)
  • 2500+ rating, UltraBullet: 50.0% expected score (2 games)
  • 2500+ rating, Bullet: 35.8% expected score (37 games)

Related Openings

Parent
Dutch Defense
49.8%
Variations (5)
Dutch Defense: Queen's Knight Variation
48.2%
Dutch Defense: Rubinstein Variation
47.6%
Dutch Defense: Raphael Variation
51.2%
Dutch Defense: Normal Variation
48.3%
Dutch Defense: Classical Variation
49.1%
Analyze Dutch Defense: Omega-Isis Gambit PositionsSee what each move is worth at your rating, move by move

Methodology

Across every rating and clock, the Dutch Defense: Omega-Isis Gambit scores 42.0% for Black — we are 90% confident the real figure is between 41.2% and 42.8% — from 11K 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
11K+ 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 Dutch Defense: Omega-Isis Gambit win rate?

Playing the Dutch Defense: Omega-Isis Gambit, Black wins 40.4%, draws 3.1% and loses 56.5%. Counting a draw as half a point, that is an Expected Score of 42.0%. It rests on 11K rated games from Lichess.

At what rating does the Dutch Defense: Omega-Isis Gambit perform best?

The Dutch Defense: Omega-Isis Gambit performs best for Black at 1400-1599, with an Expected Score of 44.6% (1.6K games) and the highest Floor of any rating with enough games to read.

Is the Dutch Defense: Omega-Isis Gambit better in blitz or rapid?

For Black, the Dutch Defense: Omega-Isis Gambit scores higher in Blitz: an Expected Score of 39.3% in Blitz (2.7K games) against 36.2% in Rapid (889 games).

How sharp is the Dutch Defense: Omega-Isis Gambit?

The Dutch Defense: Omega-Isis Gambit has a sharpness score of 96.9 (very decisive), meaning 96.9% of games end decisively. Average game length is 29 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 0-999?

At 0-999, Black wins 35.9%, draws 5.0% and loses 59.0%. Counting a draw as half a point, that is an Expected Score of 38.5%. It rests on 1.5K Lichess games, which average 25 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 1000-1199?

At 1000-1199, Black wins 40.7%, draws 3.0% and loses 56.4%. Counting a draw as half a point, that is an Expected Score of 42.2%. It rests on 1.2K Lichess games, which average 26 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 1200-1399?

At 1200-1399, Black wins 40.9%, draws 2.2% and loses 56.9%. Counting a draw as half a point, that is an Expected Score of 42.0%. It rests on 1.4K Lichess games, which average 27 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 1400-1599?

At 1400-1599, Black wins 43.5%, draws 2.2% and loses 54.3%. Counting a draw as half a point, that is an Expected Score of 44.6%. It rests on 1.6K Lichess games, which average 28 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 1600-1799?

At 1600-1799, Black wins 41.3%, draws 2.7% and loses 56.0%. Counting a draw as half a point, that is an Expected Score of 42.7%. It rests on 1.8K Lichess games, which average 30 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 1800-1999?

At 1800-1999, Black wins 42.1%, draws 3.3% and loses 54.6%. Counting a draw as half a point, that is an Expected Score of 43.8%. It rests on 1.7K Lichess games, which average 32 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 2000-2199?

At 2000-2199, Black wins 38.2%, draws 3.6% and loses 58.2%. Counting a draw as half a point, that is an Expected Score of 40.0%. It rests on 1.1K Lichess games, which average 32 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate at 2200-2499?

At 2200-2499, Black wins 38.8%, draws 3.1% and loses 58.2%. Counting a draw as half a point, that is an Expected Score of 40.3%. It rests on 503 Lichess games, which average 33 moves.

What is the Dutch Defense: Omega-Isis Gambit win rate in UltraBullet?

In UltraBullet, Black wins 40.9%, draws 1.4% and loses 57.7%. Counting a draw as half a point, that is an Expected Score of 41.6%. It rests on 670 Lichess games.

What is the Dutch Defense: Omega-Isis Gambit win rate in Bullet?

In Bullet, Black wins 42.8%, draws 2.6% and loses 54.6%. Counting a draw as half a point, that is an Expected Score of 44.1%. It rests on 6.3K Lichess games.

What is the Dutch Defense: Omega-Isis Gambit win rate in Blitz?

In Blitz, Black wins 37.1%, draws 4.4% and loses 58.5%. Counting a draw as half a point, that is an Expected Score of 39.3%. It rests on 2.7K Lichess games.

What is the Dutch Defense: Omega-Isis Gambit win rate in Rapid?

In Rapid, Black wins 34.1%, draws 4.1% and loses 61.8%. Counting a draw as half a point, that is an Expected Score of 36.2%. It rests on 889 Lichess games.

Is the Dutch Defense: Omega-Isis Gambit a good opening?

The Dutch Defense: Omega-Isis Gambit is hard work for Black — it favours White. Across all ratings, Black wins 40.4% of its games and loses 56.5%. It performs best at 1400-1599. Your results depend on your rating, time control, and how well you know the typical plans.