White rook actively cutting off the black king in a rook endgame, controlling key ranks or files to restrict king movement.
SAE concept sae_36741 fires when white rook actively cutting off the black king in a rook endgame, controlling key ranks or files to restrict king movement.. It appears in 20 of 9,950 Climbchess puzzles (0.2%), spanning ELO 679–896 (median 858).
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This page documents White rook actively cutting off the black king…, 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 rook actively cutting off the black king in a rook endgame, controlling key ranks or files to restrict king movement.
This pattern fires in 20 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 679 to 896, with a median rating of 858. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_36741 |
|---|---|
| Puzzles where it fires | 20 |
| Min ELO | 679 |
| Median ELO | 858 |
| Max ELO | 896 |
| 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 zSwQP — ELO 679, themes: crushing, defensiveMove, endgame, side to move: White
- Puzzle zzZBO — ELO 723, themes: crushing, endgame, master, side to move: White
- Puzzle zzZBO_M — ELO 723, themes: crushing, endgame, master, side to move: White
- Puzzle yvR49_F — ELO 836, themes: crushing, endgame, exposedKing, side to move: Black
- Puzzle yrYH4 — ELO 858, themes: crushing, deflection, endgame, side to move: White
- Puzzle yrYH4_M — ELO 858, themes: crushing, deflection, endgame, side to move: White
- Puzzle zimOe_F — ELO 875, themes: crushing, deflection, endgame, side to move: Black
- Puzzle zoSkR — ELO 889, themes: crushing, endgame, master, side to move: Black
- Puzzle zoSkR_M — ELO 889, themes: crushing, endgame, master, side to move: Black
- Puzzle ziM3H_F — ELO 896, themes: crushing, endgame, rookEndgame, 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_36741?
White rook actively cutting off the black king in a rook endgame, controlling key ranks or files to restrict king movement. 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 679 to 896 with a median of 858.
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.