A white knight on a semi-central square that is defended by multiple white pieces, often in a contested central structure.
SAE concept sae_7483 fires when a white knight on a semi-central square that is defended by multiple white pieces, often in a contested central structure.. It appears in 7 of 9,950 Climbchess puzzles (0.1%), spanning ELO 1209–2203 (median 1703).
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This page documents A white knight on a semi-central square that is…, 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 a semi-central square that is defended by multiple white pieces, often in a contested central structure.
This pattern fires in 7 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 1209 to 2203, with a median rating of 1703. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_7483 |
|---|---|
| Puzzles where it fires | 7 |
| Min ELO | 1209 |
| Median ELO | 1703 |
| Max ELO | 2203 |
| Coverage | 0.07% 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 7 puzzles spanning the rating distribution. Each links to its own page with full move list and related concepts.
- Puzzle 00xsd — ELO 1209, themes: advantage, fork, opening, side to move: White
- Puzzle 00xsd_F — ELO 1209, themes: advantage, fork, opening, side to move: Black
- Puzzle zzWNk — ELO 1703, themes: crushing, endgame, master, side to move: Black
- Puzzle zzWNk_F — ELO 1703, themes: crushing, endgame, master, side to move: White
- Puzzle zfMWD_M — ELO 2018, themes: crushing, defensiveMove, endgame, side to move: Black
- Puzzle zaTLp — ELO 2203, themes: advantage, long, middlegame, side to move: White
- Puzzle zaTLp_F — ELO 2203, themes: advantage, long, middlegame, 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_7483?
A white knight on a semi-central square that is defended by multiple white pieces, often in a contested central structure. 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 7 tagged puzzles (0.1% of the set), spanning Lichess ELO 1209 to 2203 with a median of 1703.
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.