Black knight on an outer-rank square, defended by at least one black piece.
SAE concept sae_8033 fires when black knight on an outer-rank square, defended by at least one black piece.. It appears in 24 of 9,950 Climbchess puzzles (0.2%), spanning ELO 706–2579 (median 2233).
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This page documents Black knight on an outer-rank square, defended…, 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:
Black knight on an outer-rank square, defended by at least one black piece.
This pattern fires in 24 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 706 to 2579, with a median rating of 2233. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_8033 |
|---|---|
| Puzzles where it fires | 24 |
| Min ELO | 706 |
| Median ELO | 2233 |
| Max ELO | 2579 |
| Coverage | 0.24% 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 zyc2K — ELO 706, themes: mate, mateIn1, middlegame, side to move: Black
- Puzzle zyc2K_M — ELO 706, themes: mate, mateIn1, middlegame, side to move: Black
- Puzzle zkXdP_F — ELO 898, themes: advantage, middlegame, short, side to move: Black
- Puzzle zzj9Z — ELO 1469, themes: advantage, kingsideAttack, opening, side to move: White
- Puzzle zdNwT — ELO 1562, themes: advantage, middlegame, short, side to move: White
- Puzzle zwVER_F — ELO 2233, themes: advantage, clearance, hangingPiece, side to move: Black
- Puzzle zr4XZ_F — ELO 2256, themes: crushing, discoveredAttack, long, side to move: White
- Puzzle JHYam_F — ELO 2381, themes: anastasiaMate, attraction, mate, side to move: Black
- Puzzle 3Vh76_F — ELO 2446, themes: endgame, exposedKing, fork, side to move: Black
- Puzzle znqDV — ELO 2579, themes: crushing, deflection, exposedKing, 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_8033?
Black knight on an outer-rank square, defended by at least one black 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 24 tagged puzzles (0.2% of the set), spanning Lichess ELO 706 to 2579 with a median of 2233.
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.