King actively centralised or advanced in an endgame with passed pawn pressure.
SAE concept sae_26960 fires when king actively centralised or advanced in an endgame with passed pawn pressure.. It appears in 153 of 9,950 Climbchess puzzles (1.5%), spanning ELO 863–2641 (median 1728).
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This page documents King actively centralised or advanced in an…, 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 actively centralised or advanced in an endgame with passed pawn pressure.
This pattern fires in 153 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 863 to 2641, with a median rating of 1728. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_26960 |
|---|---|
| Puzzles where it fires | 153 |
| Min ELO | 863 |
| Median ELO | 1728 |
| Max ELO | 2641 |
| Coverage | 1.54% 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 nJogh — ELO 863, themes: advancedPawn, crushing, endgame, side to move: Black
- Puzzle zx040_M — ELO 1125, themes: advancedPawn, crushing, endgame, side to move: Black
- Puzzle zwBS0_F — ELO 1272, themes: advancedPawn, backRankMate, discoveredAttack, side to move: Black
- Puzzle zyFs4_F — ELO 1415, themes: advancedPawn, crushing, deflection, side to move: Black
- Puzzle znTAQ — ELO 1626, themes: advancedPawn, attraction, crushing, side to move: White
- Puzzle zzV06 — ELO 1728, themes: advancedPawn, crushing, endgame, side to move: White
- Puzzle 01312_M — ELO 1969, themes: crushing, defensiveMove, endgame, side to move: Black
- Puzzle zHN5Q_F — ELO 2211, themes: defensiveMove, endgame, mate, side to move: Black
- Puzzle zgaRd — ELO 2329, themes: advancedPawn, crushing, defensiveMove, side to move: White
- Puzzle z4hRt — ELO 2435, themes: crushing, endgame, pawnEndgame, 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_26960?
King actively centralised or advanced in an endgame with passed pawn pressure. 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 153 tagged puzzles (1.5% of the set), spanning Lichess ELO 863 to 2641 with a median of 1728.
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.