Detects a white rook directly contesting a black rook on or near the 8th rank, creating back-rank pressure or a rook exchange threat.
SAE concept sae_7434 fires when detects a white rook directly contesting a black rook on or near the 8th rank, creating back-rank pressure or a rook exchange threat.. It appears in 55 of 9,950 Climbchess puzzles (0.6%), spanning ELO 668–2547 (median 1194).
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This page documents Detects a white rook directly contesting a black…, 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 white rook directly contesting a black rook on or near the 8th rank, creating back-rank pressure or a rook exchange threat.
This pattern fires in 55 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 668 to 2547, with a median rating of 1194. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_7434 |
|---|---|
| Puzzles where it fires | 55 |
| Min ELO | 668 |
| Median ELO | 1194 |
| Max ELO | 2547 |
| Coverage | 0.55% 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 wx8cz — ELO 668, themes: crushing, defensiveMove, endgame, side to move: White
- Puzzle wobNZ_M — ELO 798, themes: advantage, clearance, endgame, side to move: Black
- Puzzle rALi1_F — ELO 881, themes: advantage, clearance, endgame, side to move: Black
- Puzzle zzbXW — ELO 1029, themes: kingsideAttack, mate, mateIn2, side to move: White
- Puzzle zm1An — ELO 1173, themes: advantage, clearance, endgame, side to move: Black
- Puzzle zwand_M — ELO 1194, themes: advancedPawn, crushing, endgame, side to move: White
- Puzzle zp0K9_F — ELO 1510, themes: advantage, endgame, exposedKing, side to move: White
- Puzzle zxAZu — ELO 1658, themes: attraction, crushing, endgame, side to move: White
- Puzzle zwIk9_M — ELO 1902, themes: crushing, deflection, endgame, side to move: White
- Puzzle zzq18 — ELO 2030, themes: crushing, kingsideAttack, 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_7434?
Detects a white rook directly contesting a black rook on or near the 8th rank, creating back-rank pressure or a rook exchange threat. 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 55 tagged puzzles (0.6% of the set), spanning Lichess ELO 668 to 2547 with a median of 1194.
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.