This feature detects a white queen on a square that is attacked by both white and black pieces, with white having at least as many attackers as black.
SAE concept sae_18135 fires when this feature detects a white queen on a square that is attacked by both white and black pieces, with white having at least as many attackers as black.. It appears in 20 of 9,950 Climbchess puzzles (0.2%), spanning ELO 674–2177 (median 1603).
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This page documents This feature detects a white queen on a square…, 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:
This feature detects a white queen on a square that is attacked by both white and black pieces, with white having at least as many attackers as black.
This pattern fires in 20 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 674 to 2177, with a median rating of 1603. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_18135 |
|---|---|
| Puzzles where it fires | 20 |
| Min ELO | 674 |
| Median ELO | 1603 |
| Max ELO | 2177 |
| Coverage | 0.20% 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 zzSPc_M — ELO 674, themes: master, mate, mateIn1, side to move: White
- Puzzle zzVXe_F — ELO 803, themes: advantage, kingsideAttack, long, side to move: White
- Puzzle zslHd — ELO 814, themes: long, master, mate, side to move: White
- Puzzle zslHd_M — ELO 814, themes: long, master, mate, side to move: White
- Puzzle 0155R_F — ELO 1328, themes: crushing, intermezzo, long, side to move: Black
- Puzzle zzz6b — ELO 1603, themes: crushing, kingsideAttack, long, side to move: Black
- Puzzle suAK2_M — ELO 1824, themes: arabianMate, discoveredAttack, kingsideAttack, side to move: White
- Puzzle znBG9_F — ELO 2040, themes: crushing, kingsideAttack, long, side to move: Black
- Puzzle zyhMq_F — ELO 2116, themes: advantage, middlegame, short, side to move: White
- Puzzle zzfPz — ELO 2177, themes: advancedPawn, advantage, exposedKing, 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_18135?
This feature detects a white queen on a square that is attacked by both white and black pieces, with white having at least as many attackers as black. 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 20 tagged puzzles (0.2% of the set), spanning Lichess ELO 674 to 2177 with a median of 1603.
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.