Detects a rook and enemy king both controlling a key square on or near the back rank, typically in rook-mate build-up positions (hook mate, Anastasia mate, blind swine).
SAE concept sae_33194 fires when detects a rook and enemy king both controlling a key square on or near the back rank, typically in rook-mate build-up positions (hook mate, Anastasia mate, blind swine).. It appears in 9 of 9,950 Climbchess puzzles (0.1%), spanning ELO 703–2102 (median 2101).
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This page documents Detects a rook and enemy king both controlling a…, 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:
Detects a rook and enemy king both controlling a key square on or near the back rank, typically in rook-mate build-up positions (hook mate, Anastasia mate, blind swine).
This pattern fires in 9 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 703 to 2102, with a median rating of 2101. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_33194 |
|---|---|
| Puzzles where it fires | 9 |
| Min ELO | 703 |
| Median ELO | 2101 |
| Max ELO | 2102 |
| Coverage | 0.09% 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 9 puzzles spanning the rating distribution. Each links to its own page with full move list and related concepts.
- Puzzle 00eAX_M — ELO 703, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle 01d0S — ELO 2021, themes: crushing, endgame, long, side to move: White
- Puzzle 01d0S_F — ELO 2021, themes: crushing, endgame, long, side to move: Black
- Puzzle 01d0S_M — ELO 2021, themes: crushing, endgame, long, side to move: White
- Puzzle 3xOgD — ELO 2101, themes: attraction, endgame, hookMate, side to move: Black
- Puzzle 3xOgD_F — ELO 2101, themes: attraction, endgame, hookMate, side to move: White
- Puzzle zKtuI — ELO 2102, themes: blindSwineMate, endgame, long, side to move: Black
- Puzzle zKtuI_F — ELO 2102, themes: blindSwineMate, endgame, long, side to move: White
- Puzzle zKtuI_M — ELO 2102, themes: blindSwineMate, 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_33194?
Detects a rook and enemy king both controlling a key square on or near the back rank, typically in rook-mate build-up positions (hook mate, Anastasia mate, blind swine). 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 9 tagged puzzles (0.1% of the set), spanning Lichess ELO 703 to 2102 with a median of 2101.
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.