600Your band
At 600, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 25.0% for Black across 4 games. The sample at 600 is too small to grade honestly.
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Ruy LopezBerlin Defense, Anti-Berlin Variation, Mortimer Variation
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7
A line for Black. Every figure below is computed separately for each rating band, and every one carries its own sample size.
- Win rate, Black
- 25.0%48.8%58.8%52.9%
- Band 600, n = 4Band 1000, n = 86Band 1400, n = 97Band 1800, n = 429
- Blunder rate
- pendingpending0.0%pending
- Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
- Tier
- ---C
- Black, band 600Black, band 1000Black, band 1400Black, band 1800
- Share of games
- 0.0%0.0%0.0%0.0%
- Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
| Band | White | Draw | Black | Blunder | Book exit | Games | Tier |
|---|---|---|---|---|---|---|---|
| 600 | 75.0% | 0.0% | 25.0% | - | - | 4 | - |
| 1000 | 46.5% | 4.7% | 48.8% | - | - | 86 | - |
| 1400 | 38.1% | 3.1% | 58.8% | 0.0% | ply 9.0 | 97 | - |
| 1800 | 43.6% | 3.5% | 52.9% | - | - | 429 | C |
Results by band
What it actually does, band by band.
All four bands are on the page. The one matching your rating is marked. Nothing here is averaged across bands.
1000Your band
At 1000, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 48.8% for Black across 86 games. The sample at 1000 is too small to grade honestly.
1400Your bandBlunder rate 0.0%, band median 40.0%
At 1400, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 58.8% for Black across 97 games. The sample at 1400 is too small to grade honestly. Games in this line leave known theory around move 5 on average, and 0.0% include an early material blunder (1 games at 1400).
1800Your bandC at 1800
At 1800, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 52.9% for Black across 429 games. That is below average at this level.
Blunders and traps
How this opening ends early.
The known traps that live inside the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation. The rates are how often each one actually lands in your band, counted against every sampled game in that band.
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Mortimer Trap
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 5. Nxe5
Sprung by Black. The move that invites it is Nxe5.
The retreat 4...Ne7 baits 5. Nxe5. After 5...c6 the bishop is attacked, and the natural retreat 6. Ba4 loses the e5 knight to the a5 check, as the line shows. White can bail out with 6. Nc4 or 6. Nd3 and stay roughly level, so the trap is a practical gamble rather than a refutation.
0 hitsBand 600
0 hitsBand 1000
1 in 21,354Band 1400
0 hitsBand 1800
Read as: how often this trap line is completed per sampled game in the band.
How the Blunder Rate is measured. A material swing of three points or more inside the first 24 half-moves after leaving book, detected without an engine evaluation. It is a proxy for how sharp a position is in practice, not an engine verdict, and it is computed from a monthly game sample rather than the full corpus behind the win rates. Trap hit rates count a trap only when its full line is completed on the board.
Questions
Common questions about this page.
At 600, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 25.0% for Black across 4 games. The sample at 600 is too small to grade honestly.
At 1000, the Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation scores 48.8% for Black across 86 games. The sample at 1000 is too small to grade honestly.
The Ruy Lopez: Berlin Defense, Anti-Berlin Variation, Mortimer Variation (C65) is a line for Black. The main line runs 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7.