A knight (either colour) that is actively supported by a friendly piece, with or without white pressure.
SAE concept sae_28364 fires when a knight (either colour) that is actively supported by a friendly piece, with or without white pressure.. It appears in 740 of 9,950 Climbchess puzzles (7.4%), spanning ELO 642–2682 (median 1475).
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This page documents A knight (either colour) that is actively…, 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 knight (either colour) that is actively supported by a friendly piece, with or without white pressure.
This pattern fires in 740 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 642 to 2682, with a median rating of 1475. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_28364 |
|---|---|
| Puzzles where it fires | 740 |
| Min ELO | 642 |
| Median ELO | 1475 |
| Max ELO | 2682 |
| Coverage | 7.44% 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 zt2mj — ELO 642, themes: advantage, discoveredAttack, endgame, side to move: White
- Puzzle zumUB_F — ELO 792, themes: crushing, endgame, fork, side to move: White
- Puzzle yDRw4_F — ELO 900, themes: mate, mateIn1, middlegame, side to move: White
- Puzzle 00PGi_M — ELO 1021, themes: crushing, fork, middlegame, side to move: Black
- Puzzle yCa5o — ELO 1213, themes: discoveredAttack, discoveredCheck, hookMate, side to move: Black
- Puzzle yd2nz_F — ELO 1475, themes: arabianMate, long, mate, side to move: Black
- Puzzle zu9dt — ELO 1664, themes: advantage, hangingPiece, master, side to move: White
- Puzzle xgDiA_M — ELO 1900, themes: discoveredAttack, discoveredCheck, epauletteMate, side to move: White
- Puzzle 00j9Q_M — ELO 2088, themes: advantage, middlegame, short, side to move: Black
- Puzzle wSpLi_F — ELO 2311, themes: endgame, hookMate, 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_28364?
A knight (either colour) that is actively supported by a friendly piece, with or without white 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 740 tagged puzzles (7.4% of the set), spanning Lichess ELO 642 to 2682 with a median of 1475.
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.