A bishop is on a square, and it is attacked by at least one friendly piece.
SAE concept sae_5597 fires when a bishop is on a square, and it is attacked by at least one friendly piece.. It appears in 48 of 9,950 Climbchess puzzles (0.5%), spanning ELO 718–2694 (median 1504).
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This page documents A bishop is on a square, and it is attacked by…, 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 bishop is on a square, and it is attacked by at least one friendly piece.
This pattern fires in 48 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 718 to 2694, with a median rating of 1504. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_5597 |
|---|---|
| Puzzles where it fires | 48 |
| Min ELO | 718 |
| Median ELO | 1504 |
| Max ELO | 2694 |
| Coverage | 0.48% 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 zlttx — ELO 718, themes: mate, mateIn2, middlegame, side to move: White
- Puzzle zmKu8_F — ELO 803, themes: crushing, endgame, master, side to move: Black
- Puzzle zlbO7_F — ELO 890, themes: crushing, endgame, hangingPiece, side to move: Black
- Puzzle zz3pN_F — ELO 1017, themes: endgame, mate, mateIn1, side to move: Black
- Puzzle zxcsE_M — ELO 1160, themes: advantage, master, middlegame, side to move: Black
- Puzzle 01PcY — ELO 1504, themes: advantage, middlegame, short, side to move: Black
- Puzzle zxOym_F — ELO 1532, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zzrqN — ELO 1768, themes: advantage, attraction, exposedKing, side to move: White
- Puzzle yygkE_M — ELO 1802, themes: kingsideAttack, mate, mateIn1, side to move: White
- Puzzle zuUUy_F — ELO 2205, themes: advantage, middlegame, pin, 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_5597?
A bishop is on a square, and it is attacked by at least one friendly 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 48 tagged puzzles (0.5% of the set), spanning Lichess ELO 718 to 2694 with a median of 1504.
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.