White rooks connected or semi-connected on the back rank with the king nearby, in an uncastled or middlegame position.
SAE concept sae_5286 fires when white rooks connected or semi-connected on the back rank with the king nearby, in an uncastled or middlegame position.. It appears in 103 of 9,950 Climbchess puzzles (1.0%), spanning ELO 644–2625 (median 1323).
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This page documents White rooks connected or semi-connected on the…, 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:
White rooks connected or semi-connected on the back rank with the king nearby, in an uncastled or middlegame position.
This pattern fires in 103 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 644 to 2625, with a median rating of 1323. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_5286 |
|---|---|
| Puzzles where it fires | 103 |
| Min ELO | 644 |
| Median ELO | 1323 |
| Max ELO | 2625 |
| Coverage | 1.04% 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 zv8GW — ELO 644, themes: mate, mateIn1, middlegame, side to move: White
- Puzzle zzwhg — ELO 830, themes: mate, mateIn1, middlegame, side to move: Black
- Puzzle wHKZX — ELO 916, themes: doubleBishopMate, master, mate, side to move: White
- Puzzle zyEbP — ELO 994, themes: kingsideAttack, mate, mateIn2, side to move: Black
- Puzzle zefJw_F — ELO 1256, themes: bodenMate, master, mate, side to move: White
- Puzzle zzf14_F — ELO 1323, themes: crushing, fork, long, side to move: White
- Puzzle t87XN — ELO 1522, themes: kingsideAttack, mate, mateIn2, side to move: White
- Puzzle 021Dc_F — ELO 1600, themes: kingsideAttack, mate, mateIn2, side to move: White
- Puzzle zg6Wq_F — ELO 1983, themes: advantage, discoveredAttack, long, side to move: White
- Puzzle 6ziym_F — ELO 2342, themes: doubleBishopMate, long, mate, 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_5286?
White rooks connected or semi-connected on the back rank with the king nearby, in an uncastled or middlegame position. 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 103 tagged puzzles (1.0% of the set), spanning Lichess ELO 644 to 2625 with a median of 1323.
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.