White knight in a safe, uncontested position typically near its starting square, defended by at least one white piece.
SAE concept sae_24751 fires when white knight in a safe, uncontested position typically near its starting square, defended by at least one white piece.. It appears in 42 of 9,950 Climbchess puzzles (0.4%), spanning ELO 652–2498 (median 1491).
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This page documents White knight in a safe, uncontested position…, 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 knight in a safe, uncontested position typically near its starting square, defended by at least one white piece.
This pattern fires in 42 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 652 to 2498, with a median rating of 1491. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_24751 |
|---|---|
| Puzzles where it fires | 42 |
| Min ELO | 652 |
| Median ELO | 1491 |
| Max ELO | 2498 |
| Coverage | 0.42% 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 zwxd2_M — ELO 652, themes: kingsideAttack, mate, mateIn1, side to move: White
- Puzzle udTye — ELO 711, themes: exposedKing, kingsideAttack, long, side to move: Black
- Puzzle zzNm2_M — ELO 738, themes: kingsideAttack, mate, mateIn2, side to move: Black
- Puzzle zx8XN — ELO 1157, themes: crushing, deflection, middlegame, side to move: White
- Puzzle zT0tx_F — ELO 1160, themes: interference, mate, mateIn2, side to move: Black
- Puzzle zzrd7_F — ELO 1491, themes: endgame, mate, mateIn2, side to move: White
- Puzzle zzKWl_M — ELO 1757, themes: crushing, endgame, exposedKing, side to move: White
- Puzzle zvIlG_F — ELO 1894, themes: deflection, fork, long, side to move: Black
- Puzzle 00FF5 — ELO 1981, themes: attackingF2F7, crushing, middlegame, side to move: Black
- Puzzle xmTIb_M — ELO 2185, themes: crushing, exposedKing, middlegame, 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_24751?
White knight in a safe, uncontested position typically near its starting square, defended by at least one white piece. 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 42 tagged puzzles (0.4% of the set), spanning Lichess ELO 652 to 2498 with a median of 1491.
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.