A piece — often a rook or queen — directly threatens a square adjacent to the enemy king, setting up a forced mate or king escape restriction.
SAE concept sae_14312 fires when a piece — often a rook or queen — directly threatens a square adjacent to the enemy king, setting up a forced mate or king escape restriction.. It appears in 33 of 9,950 Climbchess puzzles (0.3%), spanning ELO 640–2685 (median 1346).
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This page documents A piece — often a rook or queen — directly…, 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 piece — often a rook or queen — directly threatens a square adjacent to the enemy king, setting up a forced mate or king escape restriction.
This pattern fires in 33 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 640 to 2685, with a median rating of 1346. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_14312 |
|---|---|
| Puzzles where it fires | 33 |
| Min ELO | 640 |
| Median ELO | 1346 |
| Max ELO | 2685 |
| Coverage | 0.33% 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 01cZp — ELO 640, themes: endgame, mate, mateIn1, side to move: White
- Puzzle zv2mG_F — ELO 732, themes: backRankMate, endgame, mate, side to move: Black
- Puzzle zzdhH_M — ELO 1098, themes: endgame, mate, mateIn1, side to move: White
- Puzzle zyvrz_M — ELO 1136, themes: deflection, endgame, epauletteMate, side to move: White
- Puzzle zuBKm — ELO 1282, themes: endgame, exposedKing, long, side to move: White
- Puzzle 01f7r_F — ELO 1346, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zzi13_F — ELO 1387, themes: crushing, deflection, endgame, side to move: White
- Puzzle pgjHw — ELO 2256, themes: clearance, crushing, endgame, side to move: White
- Puzzle zvgTT — ELO 2272, themes: dovetailMate, endgame, exposedKing, side to move: Black
- Puzzle zwsHl_F — ELO 2422, themes: crushing, endgame, exposedKing, 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_14312?
A piece — often a rook or queen — directly threatens a square adjacent to the enemy king, setting up a forced mate or king escape restriction. 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 33 tagged puzzles (0.3% of the set), spanning Lichess ELO 640 to 2685 with a median of 1346.
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.