A black bishop is actively placed on an open diagonal, often targeting a weak pawn or king.
SAE concept sae_5136 fires when a black bishop is actively placed on an open diagonal, often targeting a weak pawn or king.. It appears in 74 of 9,950 Climbchess puzzles (0.7%), spanning ELO 872–2634 (median 1918).
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This page documents A black bishop is actively placed on an open…, 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 actively placed on an open diagonal, often targeting a weak pawn or king.
This pattern fires in 74 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 872 to 2634, with a median rating of 1918. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_5136 |
|---|---|
| Puzzles where it fires | 74 |
| Min ELO | 872 |
| Median ELO | 1918 |
| Max ELO | 2634 |
| Coverage | 0.74% 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 zxWQq — ELO 872, themes: advantage, middlegame, short, side to move: White
- Puzzle 01L9G_M — ELO 933, themes: advantage, fork, middlegame, side to move: White
- Puzzle zzsrL — ELO 1171, themes: crushing, endgame, fork, side to move: Black
- Puzzle zwDSk_F — ELO 1414, themes: attraction, kingsideAttack, long, side to move: White
- Puzzle yd2nz_F — ELO 1475, themes: arabianMate, long, mate, side to move: Black
- Puzzle zYcJS_M — ELO 1918, themes: advancedPawn, crushing, middlegame, side to move: Black
- Puzzle 023H1_F — ELO 2181, themes: advantage, master, middlegame, side to move: Black
- Puzzle zzAqy — ELO 2286, themes: endgame, exposedKing, long, side to move: Black
- Puzzle zyZG7_M — ELO 2353, themes: advantage, attraction, exposedKing, side to move: White
- Puzzle zoCUM — ELO 2584, themes: advantage, defensiveMove, deflection, 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_5136?
A black bishop is actively placed on an open diagonal, often targeting a weak pawn or king. 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 74 tagged puzzles (0.7% of the set), spanning Lichess ELO 872 to 2634 with a median of 1918.
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.