A kingside h- or g-file pawn (for the side to move) on rank 7 that is undefended and under attack, in positions with active kingside play.
SAE concept sae_23607 fires when a kingside h- or g-file pawn (for the side to move) on rank 7 that is undefended and under attack, in positions with active kingside play.. It appears in 24 of 9,950 Climbchess puzzles (0.2%), spanning ELO 903–2448 (median 2101).
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This page documents A kingside h- or g-file pawn (for the side to…, 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 kingside h- or g-file pawn (for the side to move) on rank 7 that is undefended and under attack, in positions with active kingside play.
This pattern fires in 24 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 903 to 2448, with a median rating of 2101. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_23607 |
|---|---|
| Puzzles where it fires | 24 |
| Min ELO | 903 |
| Median ELO | 2101 |
| Max ELO | 2448 |
| 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 zykpK — ELO 903, themes: endgame, long, mate, side to move: Black
- Puzzle zykpK_M — ELO 903, themes: endgame, long, mate, side to move: Black
- Puzzle zyw8s — ELO 1071, themes: kingsideAttack, mate, mateIn2, side to move: White
- Puzzle 01EDR_M — ELO 1175, themes: endgame, side to move: White
- Puzzle 01yBL — ELO 1308, themes: advantage, endgame, long, side to move: Black
- Puzzle zhEPi_M — ELO 2101, themes: clearance, crushing, endgame, side to move: White
- Puzzle ztqvt_F — ELO 2200, themes: attraction, deflection, mate, side to move: White
- Puzzle zVm44 — ELO 2273, themes: advantage, long, middlegame, side to move: Black
- Puzzle oO7Zc — ELO 2337, themes: advancedPawn, discoveredAttack, discoveredCheck, side to move: Black
- Puzzle zxbdk — ELO 2448, themes: crushing, endgame, fork, 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_23607?
A kingside h- or g-file pawn (for the side to move) on rank 7 that is undefended and under attack, in positions with active kingside play. 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 903 to 2448 with a median of 2101.
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.