A white bishop that is defended by at least one white piece, commonly on the first four ranks or kingside files.
SAE concept sae_18432 fires when a white bishop that is defended by at least one white piece, commonly on the first four ranks or kingside files.. It appears in 277 of 9,950 Climbchess puzzles (2.8%), spanning ELO 612–2682 (median 1547).
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This page documents A white bishop that is defended 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 that is defended by at least one white piece, commonly on the first four ranks or kingside files.
This pattern fires in 277 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 612 to 2682, with a median rating of 1547. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_18432 |
|---|---|
| Puzzles where it fires | 277 |
| Min ELO | 612 |
| Median ELO | 1547 |
| Max ELO | 2682 |
| Coverage | 2.78% 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 zwIo0 — ELO 793, themes: advancedPawn, discoveredCheck, doubleCheck, side to move: Black
- Puzzle ybWTw — ELO 877, themes: attraction, endgame, kingsideAttack, side to move: Black
- Puzzle zqKYF_M — ELO 1098, themes: endgame, epauletteMate, mate, side to move: White
- Puzzle zwhGK_F — ELO 1307, themes: advancedPawn, discoveredCheck, doubleCheck, side to move: Black
- Puzzle zox1E — ELO 1547, themes: advantage, attraction, master, side to move: Black
- Puzzle zrkck_F — ELO 1682, themes: mate, mateIn2, middlegame, side to move: White
- Puzzle zy1Vi — ELO 1884, themes: kingsideAttack, mate, mateIn2, side to move: White
- Puzzle ztSDk_M — ELO 2041, themes: crushing, endgame, long, side to move: White
- Puzzle xr7a1_M — ELO 2331, themes: endgame, mate, mateIn2, 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_18432?
A white bishop that is defended by at least one white piece, commonly on the first four ranks or kingside files. 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 277 tagged puzzles (2.8% of the set), spanning Lichess ELO 612 to 2682 with a median of 1547.
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.