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1. e4 b6
A line for Black. Every figure below is computed separately for each rating band, and every one carries its own sample size.
| Band | White | Draw | Black | Blunder | Book exit | Games | Tier |
|---|---|---|---|---|---|---|---|
| 600 | 50.1% | 4.1% | 45.8% | 43.6% | ply 2.4 | 29,267 | C |
| 1000 | 49.8% | 3.4% | 46.8% | 26.9% | ply 2.7 | 147,272 | B |
| 1400 | 49.3% | 3.8% | 46.9% | 31.7% | ply 2.8 | 141,803 | B |
| 1800 | 50.2% | 4.1% | 45.7% | 26.2% | ply 3.1 | 249,606 | B |
Results by band
All four bands are on the page. The one matching your rating is marked. Nothing here is averaged across bands.
At 600, the Owen Defense scores 45.8% for Black across 29,267 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 43.6% include an early material blunder (62 games at 600).
At 1000, the Owen Defense scores 46.8% for Black across 147,272 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 26.9% include an early material blunder (257 games at 1000).
At 1400, the Owen Defense scores 46.9% for Black across 141,803 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 31.7% include an early material blunder (281 games at 1400).
At 1800, the Owen Defense scores 45.7% for Black across 249,606 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 26.2% include an early material blunder (542 games at 1800).
Blunders and traps
The known traps that live inside the Owen Defense. The rates are how often each one actually lands in your band, counted against every sampled game in that band.
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1. e4 b6 2. d4 Bb7 3. Bd3 f5 4. exf5 Bxg2
Sprung by White. The move that invites it is Bxg2.
Grabbing the g2 pawn loses by force: the queen check on h5 crashes through, and even winning the queen with 7...Nxh5 runs into the bishop mate on g6.
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
At 600, the Owen Defense scores 45.8% for Black across 29,267 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 43.6% include an early material blunder (62 games at 600).
At 1000, the Owen Defense scores 46.8% for Black across 147,272 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 26.9% include an early material blunder (257 games at 1000).
The Owen Defense (B00) is a line for Black. The main line runs 1. e4 b6.