A white knight on rank 3, uncontested by black, in an active tactical or mating position.
SAE concept sae_10998 fires when a white knight on rank 3, uncontested by black, in an active tactical or mating position.. It appears in 516 of 9,950 Climbchess puzzles (5.2%), spanning ELO 613–2696 (median 1596).
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This page documents A white knight on rank 3, uncontested by 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:
A white knight on rank 3, uncontested by black, in an active tactical or mating position.
This pattern fires in 516 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 613 to 2696, with a median rating of 1596. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_10998 |
|---|---|
| Puzzles where it fires | 516 |
| Min ELO | 613 |
| Median ELO | 1596 |
| Max ELO | 2696 |
| Coverage | 5.19% 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 xbPL4 — ELO 613, themes: anastasiaMate, endgame, mate, side to move: White
- Puzzle zawY0_M — ELO 869, themes: anastasiaMate, mate, mateIn1, side to move: White
- Puzzle zPwD6 — ELO 1090, themes: mate, mateIn2, middlegame, side to move: Black
- Puzzle zxH6D_M — ELO 1253, themes: attraction, kingsideAttack, mate, side to move: Black
- Puzzle zzSe0_M — ELO 1388, themes: advantage, discoveredAttack, master, side to move: Black
- Puzzle zwJtO_F — ELO 1596, themes: master, mate, mateIn1, side to move: Black
- Puzzle zzjnk_F — ELO 1751, themes: advantage, endgame, long, side to move: White
- Puzzle zzWJ4_F — ELO 2001, themes: crushing, endgame, fork, side to move: White
- Puzzle zzVo5 — ELO 2154, themes: advantage, long, middlegame, side to move: Black
- Puzzle zzowv_M — ELO 2470, themes: discoveredCheck, doubleCheck, mate, 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_10998?
A white knight on rank 3, uncontested by black, in an active tactical or mating 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 516 tagged puzzles (5.2% of the set), spanning Lichess ELO 613 to 2696 with a median of 1596.
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.