King manoeuvring in a pawn endgame, exploiting key squares and opposition to infiltrate or restrict the opposing king.
SAE concept sae_36685 fires when king manoeuvring in a pawn endgame, exploiting key squares and opposition to infiltrate or restrict the opposing king.. It appears in 67 of 9,950 Climbchess puzzles (0.7%), spanning ELO 605–2695 (median 1415).
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This page documents King manoeuvring in a pawn endgame, exploiting…, 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:
King manoeuvring in a pawn endgame, exploiting key squares and opposition to infiltrate or restrict the opposing king.
This pattern fires in 67 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 605 to 2695, with a median rating of 1415. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_36685 |
|---|---|
| Puzzles where it fires | 67 |
| Min ELO | 605 |
| Median ELO | 1415 |
| Max ELO | 2695 |
| Coverage | 0.67% 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 yS8nE_M — ELO 605, themes: crushing, endgame, long, side to move: Black
- Puzzle zZGI0 — ELO 802, themes: crushing, endgame, pawnEndgame, side to move: Black
- Puzzle y9DG7_F — ELO 841, themes: crushing, endgame, pawnEndgame, side to move: Black
- Puzzle zkJda_M — ELO 1094, themes: crushing, endgame, pawnEndgame, side to move: Black
- Puzzle zorg9_M — ELO 1243, themes: crushing, endgame, pawnEndgame, side to move: White
- Puzzle yzDK2 — ELO 1415, themes: crushing, endgame, long, side to move: Black
- Puzzle zpW9Z_M — ELO 1851, themes: crushing, endgame, long, side to move: White
- Puzzle 00MDy_M — ELO 1920, themes: crushing, endgame, long, side to move: White
- Puzzle za3nZ — ELO 2274, themes: crushing, defensiveMove, endgame, side to move: Black
- Puzzle zX40f_F — ELO 2349, themes: crushing, endgame, 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_36685?
King manoeuvring in a pawn endgame, exploiting key squares and opposition to infiltrate or restrict the opposing king. 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 67 tagged puzzles (0.7% of the set), spanning Lichess ELO 605 to 2695 with a median of 1415.
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.