A black bishop that is active or under pressure in a tactical position, often near the centre or kingside.
SAE concept sae_8592 fires when a black bishop that is active or under pressure in a tactical position, often near the centre or kingside.. It appears in 2,418 of 9,950 Climbchess puzzles (24.3%), spanning ELO 612–2697 (median 1625).
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This page documents A black bishop that is active or under pressure…, 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 that is active or under pressure in a tactical position, often near the centre or kingside.
This pattern fires in 2,418 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 612 to 2697, with a median rating of 1625. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_8592 |
|---|---|
| Puzzles where it fires | 2,418 |
| Min ELO | 612 |
| Median ELO | 1625 |
| Max ELO | 2697 |
| Coverage | 24.30% 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 01fya — ELO 612, themes: endgame, mate, mateIn1, side to move: Black
- Puzzle xxINJ_F — ELO 832, themes: advantage, clearance, endgame, side to move: Black
- Puzzle zz5aX_M — ELO 978, themes: endgame, mate, mateIn1, side to move: Black
- Puzzle zow07_M — ELO 1192, themes: advantage, middlegame, pin, side to move: White
- Puzzle ztGcV — ELO 1428, themes: advantage, deflection, kingsideAttack, side to move: White
- Puzzle zufFx_M — ELO 1625, themes: attraction, crushing, fork, side to move: Black
- Puzzle zyBdB_M — ELO 1826, themes: attraction, mate, mateIn4, side to move: White
- Puzzle yRMQC — ELO 2039, themes: hookMate, mate, mateIn2, side to move: White
- Puzzle nA21V_F — ELO 2207, themes: arabianMate, attraction, exposedKing, side to move: White
- Puzzle zsFx7_F — ELO 2445, themes: advantage, kingsideAttack, middlegame, 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_8592?
A black bishop that is active or under pressure in a tactical position, often near the centre or kingside. 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 2,418 tagged puzzles (24.3% of the set), spanning Lichess ELO 612 to 2697 with a median of 1625.
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.