[polysemantic — fires on multiple unrelated patterns; needs split]
SAE concept sae_4507 fires when [polysemantic — fires on multiple unrelated patterns; needs split]. It appears in 43 of 9,950 Climbchess puzzles (0.4%), spanning ELO 610–2547 (median 1802).
Free forever · no email · no signup · delete data anytime.
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 43 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 610 to 2547, with a median rating of 1802. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_4507 |
|---|---|
| Puzzles where it fires | 43 |
| Min ELO | 610 |
| Median ELO | 1802 |
| Max ELO | 2547 |
| Coverage | 0.43% 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 ydABK — ELO 610, themes: crushing, endgame, hangingPiece, side to move: White
- Puzzle zsZPX_F — ELO 815, themes: backRankMate, endgame, long, side to move: White
- Puzzle 00rYo — ELO 1104, themes: crushing, endgame, fork, side to move: Black
- Puzzle zONy3_F — ELO 1308, themes: advantage, middlegame, short, side to move: White
- Puzzle ztg7U_M — ELO 1597, themes: advantage, long, middlegame, side to move: White
- Puzzle yygkE_F — ELO 1802, themes: kingsideAttack, mate, mateIn1, side to move: Black
- Puzzle zlk6H — ELO 1940, themes: attraction, backRankMate, mate, side to move: Black
- Puzzle zzoyT_F — ELO 2043, themes: crushing, defensiveMove, endgame, side to move: Black
- Puzzle zlkdt_M — ELO 2135, themes: crushing, long, middlegame, side to move: White
- Puzzle 01W7X — ELO 2502, themes: crushing, endgame, rookEndgame, 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_4507?
[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 43 tagged puzzles (0.4% of the set), spanning Lichess ELO 610 to 2547 with a median of 1802.
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.