A black rook or queen is actively placed on the 7th or 8th rank, exerting pressure with no immediate white counterattack.
SAE concept sae_6286 fires when a black rook or queen is actively placed on the 7th or 8th rank, exerting pressure with no immediate white counterattack.. It appears in 131 of 9,950 Climbchess puzzles (1.3%), spanning ELO 664–2692 (median 1623).
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This page documents A black rook or queen is actively placed 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:
A black rook or queen is actively placed on the 7th or 8th rank, exerting pressure with no immediate white counterattack.
This pattern fires in 131 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 664 to 2692, with a median rating of 1623. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_6286 |
|---|---|
| Puzzles where it fires | 131 |
| Min ELO | 664 |
| Median ELO | 1623 |
| Max ELO | 2692 |
| Coverage | 1.32% 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 zyyi1 — ELO 664, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zxj08_M — ELO 842, themes: crushing, middlegame, short, side to move: White
- Puzzle zt3yG_M — ELO 967, themes: backRankMate, endgame, long, side to move: Black
- Puzzle zxqrt_F — ELO 1029, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zyJHs_M — ELO 1431, themes: clearance, crushing, master, side to move: White
- Puzzle zzyfI_F — ELO 1623, themes: advantage, middlegame, queensideAttack, side to move: White
- Puzzle zpymI — ELO 1962, themes: endgame, killBoxMate, long, side to move: Black
- Puzzle 00lvf_M — ELO 2122, themes: advantage, long, middlegame, side to move: White
- Puzzle zwkgx_F — ELO 2212, themes: advantage, middlegame, pin, side to move: Black
- Puzzle zzWbh_M — ELO 2393, themes: crushing, fork, long, side to move: White
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_6286?
A black rook or queen is actively placed on the 7th or 8th rank, exerting pressure with no immediate white counterattack. 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 131 tagged puzzles (1.3% of the set), spanning Lichess ELO 664 to 2692 with a median of 1623.
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.