White rook on the back ranks in a position with a mating attack or deflection tactic.
SAE concept sae_37106 fires when white rook on the back ranks in a position with a mating attack or deflection tactic.. It appears in 23 of 9,950 Climbchess puzzles (0.2%), spanning ELO 1128–2533 (median 1689).
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This page documents White rook on the back ranks in a position with…, 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 rook on the back ranks in a position with a mating attack or deflection tactic.
This pattern fires in 23 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 1128 to 2533, with a median rating of 1689. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_37106 |
|---|---|
| Puzzles where it fires | 23 |
| Min ELO | 1128 |
| Median ELO | 1689 |
| Max ELO | 2533 |
| Coverage | 0.23% 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 zQVCa — ELO 1128, themes: endgame, hookMate, long, side to move: Black
- Puzzle zQVCa_M — ELO 1128, themes: endgame, hookMate, long, side to move: Black
- Puzzle z7Cwu — ELO 1176, themes: endgame, hookMate, mate, side to move: Black
- Puzzle z7Cwu_M — ELO 1176, themes: endgame, hookMate, mate, side to move: Black
- Puzzle zcNA4_M — ELO 1340, themes: clearance, mate, mateIn2, side to move: Black
- Puzzle 01yYo_F — ELO 1689, themes: crushing, endgame, rookEndgame, side to move: White
- Puzzle 01vLC — ELO 2127, themes: crushing, endgame, long, side to move: Black
- Puzzle zfvCd_M — ELO 2299, themes: crushing, endgame, long, side to move: White
- Puzzle zzHWv_F — ELO 2389, themes: advantage, defensiveMove, endgame, side to move: Black
- Puzzle zuPbR — ELO 2533, themes: crushing, fork, master, 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_37106?
White rook on the back ranks in a position with a mating attack or deflection tactic. 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 23 tagged puzzles (0.2% of the set), spanning Lichess ELO 1128 to 2533 with a median of 1689.
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.