A black bishop is under attack by white and defended by black, with black maintaining a defender advantage.
SAE concept sae_5684 fires when a black bishop is under attack by white and defended by black, with black maintaining a defender advantage.. It appears in 33 of 9,950 Climbchess puzzles (0.3%), spanning ELO 798–2696 (median 1304).
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This page documents A black bishop is under attack by white and…, 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 black bishop is under attack by white and defended by black, with black maintaining a defender advantage.
This pattern fires in 33 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 798 to 2696, with a median rating of 1304. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_5684 |
|---|---|
| Puzzles where it fires | 33 |
| Min ELO | 798 |
| Median ELO | 1304 |
| Max ELO | 2696 |
| Coverage | 0.33% 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 yuxMM_M — ELO 798, themes: crushing, discoveredAttack, kingsideAttack, side to move: White
- Puzzle zvVEp — ELO 1138, themes: advantage, middlegame, short, side to move: White
- Puzzle zv5hZ — ELO 1175, themes: crushing, discoveredAttack, kingsideAttack, side to move: Black
- Puzzle yOPwT — ELO 1207, themes: anastasiaMate, attraction, mate, side to move: Black
- Puzzle 00DBP_F — ELO 1300, themes: advantage, endgame, master, side to move: White
- Puzzle zyx8W_F — ELO 1304, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zv3I5_M — ELO 1987, themes: advantage, deflection, middlegame, side to move: White
- Puzzle zzhjS_F — ELO 2255, themes: advantage, endgame, intermezzo, side to move: Black
- Puzzle zsTKS_M — ELO 2445, themes: attraction, cornerMate, long, side to move: Black
- Puzzle zpX0M_M — ELO 2481, themes: advantage, deflection, master, side to move: Black
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_5684?
A black bishop is under attack by white and defended by black, with black maintaining a defender advantage. 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 33 tagged puzzles (0.3% of the set), spanning Lichess ELO 798 to 2696 with a median of 1304.
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.