[polysemantic — fires on multiple unrelated patterns; needs split]
SAE concept sae_36019 fires when [polysemantic — fires on multiple unrelated patterns; needs split]. It appears in 11 of 9,950 Climbchess puzzles (0.1%), spanning ELO 1158–2192 (median 1462).
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This page documents [polysemantic — fires on multiple unrelated…, 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:
[polysemantic — fires on multiple unrelated patterns; needs split]
This pattern fires in 11 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 1158 to 2192, with a median rating of 1462. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_36019 |
|---|---|
| Puzzles where it fires | 11 |
| Min ELO | 1158 |
| Median ELO | 1462 |
| Max ELO | 2192 |
| Coverage | 0.11% 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 zlTkP — ELO 1158, themes: advantage, exposedKing, long, side to move: White
- Puzzle zlTkP_F — ELO 1158, themes: advantage, exposedKing, long, side to move: Black
- Puzzle zlTkP_M — ELO 1158, themes: advantage, exposedKing, long, side to move: White
- Puzzle zsE9S — ELO 1352, themes: attraction, endgame, mate, side to move: White
- Puzzle zsE9S_F — ELO 1352, themes: attraction, endgame, mate, side to move: Black
- Puzzle zeP4I — ELO 1462, themes: clearance, endgame, long, side to move: Black
- Puzzle zeP4I_F — ELO 1462, themes: clearance, endgame, long, side to move: White
- Puzzle zeP4I_M — ELO 1462, themes: clearance, endgame, long, side to move: Black
- Puzzle zBsgt — ELO 2192, themes: crushing, endgame, long, side to move: White
- Puzzle zBsgt_F — ELO 2192, themes: crushing, endgame, long, 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_36019?
[polysemantic — fires on multiple unrelated patterns; needs split] 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 11 tagged puzzles (0.1% of the set), spanning Lichess ELO 1158 to 2192 with a median of 1462.
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.