A queen that is unattacked by both sides, typically isolated with no immediate threats.
SAE concept sae_11876 fires when a queen that is unattacked by both sides, typically isolated with no immediate threats.. It appears in 156 of 9,950 Climbchess puzzles (1.6%), spanning ELO 708–2683 (median 1684).
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This page documents A queen that is unattacked by both sides…, 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 queen that is unattacked by both sides, typically isolated with no immediate threats.
This pattern fires in 156 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 708 to 2683, with a median rating of 1684. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_11876 |
|---|---|
| Puzzles where it fires | 156 |
| Min ELO | 708 |
| Median ELO | 1684 |
| Max ELO | 2683 |
| Coverage | 1.57% 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 zc3vY — ELO 708, themes: endgame, hangingPiece, mate, side to move: White
- Puzzle zzxhB_F — ELO 965, themes: endgame, mate, mateIn1, side to move: White
- Puzzle zgTAo — ELO 1196, themes: capturingDefender, endgame, hangingPiece, side to move: Black
- Puzzle zzg77_M — ELO 1491, themes: advantage, endgame, short, side to move: Black
- Puzzle zyded — ELO 1536, themes: attraction, crushing, endgame, side to move: Black
- Puzzle zwMNN — ELO 1684, themes: crushing, endgame, interference, side to move: Black
- Puzzle zOQoN — ELO 1875, themes: endgame, mate, mateIn1, side to move: White
- Puzzle zfRXf — ELO 2271, themes: crushing, endgame, exposedKing, side to move: Black
- Puzzle T3oaO — ELO 2349, themes: endgame, mate, mateIn1, side to move: White
- Puzzle m7oDG — ELO 2459, themes: endgame, mate, mateIn2, 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_11876?
A queen that is unattacked by both sides, typically isolated with no immediate threats. 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 156 tagged puzzles (1.6% of the set), spanning Lichess ELO 708 to 2683 with a median of 1684.
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.