White bishop on g2, attacked by 0 black pieces, and attacked by 1 white piece (a pawn on h3 or f3).
SAE concept sae_4813 fires when white bishop on g2, attacked by 0 black pieces, and attacked by 1 white piece (a pawn on h3 or f3).. It appears in 22 of 9,950 Climbchess puzzles (0.2%), spanning ELO 745–2577 (median 1947).
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This page documents White bishop on g2, attacked by 0 black pieces…, 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:
White bishop on g2, attacked by 0 black pieces, and attacked by 1 white piece (a pawn on h3 or f3).
This pattern fires in 22 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 745 to 2577, with a median rating of 1947. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_4813 |
|---|---|
| Puzzles where it fires | 22 |
| Min ELO | 745 |
| Median ELO | 1947 |
| Max ELO | 2577 |
| Coverage | 0.22% 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 zwC98 — ELO 745, themes: mate, mateIn2, middlegame, side to move: White
- Puzzle zjY0C — ELO 867, themes: mate, mateIn1, middlegame, side to move: White
- Puzzle zjY0C_M — ELO 867, themes: mate, mateIn1, middlegame, side to move: White
- Puzzle xhzIi_F — ELO 1187, themes: crushing, middlegame, short, side to move: White
- Puzzle 6qt4L_M — ELO 1906, themes: kingsideAttack, mate, mateIn2, side to move: Black
- Puzzle zzmbg_M — ELO 1947, themes: advancedPawn, collinearMove, crushing, side to move: Black
- Puzzle Mhfvi — ELO 2199, themes: kingsideAttack, long, mate, side to move: White
- Puzzle Mhfvi_M — ELO 2199, themes: kingsideAttack, long, mate, side to move: White
- Puzzle yxVd4_F — ELO 2433, themes: advantage, clearance, long, side to move: Black
- Puzzle ZmFWP — ELO 2491, themes: doubleBishopMate, kingsideAttack, mate, 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_4813?
White bishop on g2, attacked by 0 black pieces, and attacked by 1 white piece (a pawn on h3 or f3). 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 22 tagged puzzles (0.2% of the set), spanning Lichess ELO 745 to 2577 with a median of 1947.
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.