A white rook that is contested (attacked by a black piece and defended by a white piece) anywhere on the board in a tactical or endgame position.
SAE concept sae_7168 fires when a white rook that is contested (attacked by a black piece and defended by a white piece) anywhere on the board in a tactical or endgame position.. It appears in 343 of 9,950 Climbchess puzzles (3.4%), spanning ELO 612–2645 (median 1413).
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This page documents A white rook that is contested (attacked by 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:
A white rook that is contested (attacked by a black piece and defended by a white piece) anywhere on the board in a tactical or endgame position.
This pattern fires in 343 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 612 to 2645, with a median rating of 1413. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_7168 |
|---|---|
| Puzzles where it fires | 343 |
| Min ELO | 612 |
| Median ELO | 1413 |
| Max ELO | 2645 |
| Coverage | 3.45% 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 01fya — ELO 612, themes: endgame, mate, mateIn1, side to move: Black
- Puzzle yXAZB — ELO 820, themes: attraction, endgame, long, side to move: White
- Puzzle zyRvQ_M — ELO 865, themes: backRankMate, mate, mateIn2, side to move: White
- Puzzle zwuUb_M — ELO 1058, themes: kingsideAttack, mate, mateIn2, side to move: Black
- Puzzle zyph5_F — ELO 1230, themes: crushing, endgame, long, side to move: White
- Puzzle zuRy4 — ELO 1413, themes: crushing, endgame, exposedKing, side to move: Black
- Puzzle zxM4N_F — ELO 1561, themes: advantage, endgame, fork, side to move: White
- Puzzle zrSnH — ELO 1727, themes: advantage, endgame, exposedKing, side to move: White
- Puzzle zuwOp — ELO 1959, themes: advantage, middlegame, pin, side to move: White
- Puzzle vrJ1T — ELO 2203, themes: advantage, defensiveMove, 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_7168?
A white rook that is contested (attacked by a black piece and defended by a white piece) anywhere on the board in a tactical or endgame 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 343 tagged puzzles (3.4% of the set), spanning Lichess ELO 612 to 2645 with a median of 1413.
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.