Black king in a castled or near-castled position attacked by its own pieces (self-interference or overload pattern).
SAE concept sae_11995 fires when black king in a castled or near-castled position attacked by its own pieces (self-interference or overload pattern).. It appears in 83 of 9,950 Climbchess puzzles (0.8%), spanning ELO 858–2484 (median 1575).
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This page documents Black king in a castled or near-castled position…, 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:
Black king in a castled or near-castled position attacked by its own pieces (self-interference or overload pattern).
This pattern fires in 83 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 858 to 2484, with a median rating of 1575. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_11995 |
|---|---|
| Puzzles where it fires | 83 |
| Min ELO | 858 |
| Median ELO | 1575 |
| Max ELO | 2484 |
| Coverage | 0.83% 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 wCS4K_M — ELO 858, themes: clearance, kingsideAttack, mate, side to move: Black
- Puzzle zvtNm_F — ELO 1097, themes: advantage, middlegame, short, side to move: Black
- Puzzle zzYnR_F — ELO 1356, themes: endgame, long, mate, side to move: White
- Puzzle zmcC7_F — ELO 1399, themes: crushing, discoveredAttack, middlegame, side to move: White
- Puzzle yt677 — ELO 1488, themes: advantage, interference, middlegame, side to move: Black
- Puzzle zxpDy_M — ELO 1575, themes: advantage, middlegame, short, side to move: Black
- Puzzle zypFw_F — ELO 1674, themes: advantage, master, middlegame, side to move: Black
- Puzzle zgVvD_F — ELO 1819, themes: advantage, middlegame, short, side to move: Black
- Puzzle 00fba_F — ELO 1999, themes: crushing, long, master, side to move: Black
- Puzzle zosUq_M — ELO 2070, themes: advantage, hangingPiece, master, 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_11995?
Black king in a castled or near-castled position attacked by its own pieces (self-interference or overload pattern). 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 83 tagged puzzles (0.8% of the set), spanning Lichess ELO 858 to 2484 with a median of 1575.
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.