A queen (colour unspecified) in a tactically vulnerable position, often near the centre or in a mating-net context.
SAE concept sae_12118 fires when a queen (colour unspecified) in a tactically vulnerable position, often near the centre or in a mating-net context.. It appears in 44 of 9,950 Climbchess puzzles (0.4%), spanning ELO 612–2662 (median 1062).
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This page documents A queen (colour unspecified) in a tactically…, 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 (colour unspecified) in a tactically vulnerable position, often near the centre or in a mating-net context.
This pattern fires in 44 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 612 to 2662, with a median rating of 1062. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_12118 |
|---|---|
| Puzzles where it fires | 44 |
| Min ELO | 612 |
| Median ELO | 1062 |
| Max ELO | 2662 |
| Coverage | 0.44% 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 zsZPX_F — ELO 815, themes: backRankMate, endgame, long, side to move: White
- Puzzle uIiQj_M — ELO 819, themes: hookMate, mate, mateIn2, side to move: White
- Puzzle zxoAT_F — ELO 864, themes: crushing, endgame, fork, side to move: White
- Puzzle zAuJY — ELO 1021, themes: crushing, defensiveMove, endgame, side to move: White
- Puzzle zMjwr_M — ELO 1062, themes: backRankMate, endgame, fork, side to move: Black
- Puzzle zuzGu — ELO 1429, themes: advantage, endgame, hangingPiece, side to move: White
- Puzzle 00z82_F — ELO 1597, themes: advantage, master, middlegame, side to move: White
- Puzzle zx9W6_F — ELO 2147, themes: crushing, endgame, hangingPiece, side to move: White
- Puzzle zzVsF_M — ELO 2465, 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_12118?
A queen (colour unspecified) in a tactically vulnerable position, often near the centre or in a mating-net context. 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 44 tagged puzzles (0.4% of the set), spanning Lichess ELO 612 to 2662 with a median of 1062.
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.