A white bishop under attack by at least one black piece, with at least one white piece providing defence.
SAE concept sae_611 fires when a white bishop under attack by at least one black piece, with at least one white piece providing defence.. It appears in 135 of 9,950 Climbchess puzzles (1.4%), spanning ELO 821–2692 (median 1648).
Free forever · no email · no signup · delete data anytime.
This page documents A white bishop under attack by at least one…, one of 4,505 interpretable chess concepts extracted from Leela Chess Zero via sparse autoencoders. The full feature description from our SAE labelling pipeline reads:
A white bishop under attack by at least one black piece, with at least one white piece providing defence.
This pattern fires in 135 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 821 to 2692, with a median rating of 1648. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_611 |
|---|---|
| Puzzles where it fires | 135 |
| Min ELO | 821 |
| Median ELO | 1648 |
| Max ELO | 2692 |
| Coverage | 1.36% of puzzle set |
Related concepts
The five concepts most often co-firing alongside this one (Jaccard similarity over the puzzle co-occurrence graph) are:
Example puzzles
Below are 10 puzzles spanning the rating distribution. Each links to its own page with full move list and related concepts.
- Puzzle zzGnP — ELO 821, themes: advantage, middlegame, pin, side to move: Black
- Puzzle zwDlz_M — ELO 912, themes: arabianMate, mate, mateIn1, side to move: Black
- Puzzle znflB_F — ELO 994, themes: bishopEndgame, crushing, defensiveMove, side to move: White
- Puzzle zzgyD — ELO 1355, themes: backRankMate, deflection, endgame, side to move: White
- Puzzle 01Tm7_F — ELO 1581, themes: crushing, middlegame, short, side to move: White
- Puzzle zjtX8 — ELO 1648, themes: crushing, defensiveMove, endgame, side to move: Black
- Puzzle 01uGJ_F — ELO 1752, themes: advantage, endgame, short, side to move: White
- Puzzle QYEAx — ELO 1879, themes: arabianMate, kingsideAttack, long, side to move: Black
- Puzzle zHJmB_F — ELO 1983, themes: clearance, mate, mateIn2, side to move: White
- Puzzle zuYfM — ELO 2353, themes: advantage, attraction, kingsideAttack, side to move: White
How to use this page
If you want to train this pattern, open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer surfaces them at the right difficulty for your current rating, and tracks how often you spot the cue versus miss it. You can also browse the related concepts above to see neighbouring ideas in feature space.
Climbchess concepts are not heuristics written by a human author. Each one corresponds to a single direction in the residual stream of Leela Chess Zero that activates on a specific board feature, then was labelled by reading the top-activating positions. This makes the catalogue exhaustive (every Leela-detectable pattern is in here somewhere) and falsifiable (you can replay our extraction).
Frequently asked
What is SAE concept sae_611?
A white bishop under attack by at least one black piece, with at least one white piece providing defence. It is one of 4,505 interpretable features extracted from Leela Chess Zero's residual stream via sparse autoencoders, then labelled by reading the top-activating positions.
Where does this pattern appear?
In 135 tagged puzzles (1.4% of the set), spanning Lichess ELO 821 to 2692 with a median of 1648.
How do I train it?
Open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer adapts difficulty using your live recognition profile and tracks how often you spot the cue versus miss it.
Is it free?
Yes. Climbchess is free forever, with no account, email, or signup required. You can delete your data at any time.