Bishop activity in tactical or endgame positions where a bishop is a key attacking or deflection piece.
SAE concept sae_26298 fires when bishop activity in tactical or endgame positions where a bishop is a key attacking or deflection piece.. It appears in 18 of 9,950 Climbchess puzzles (0.2%), spanning ELO 969–2030 (median 1456).
Free forever · no email · no signup · delete data anytime.
This page documents Bishop activity in tactical or endgame positions…, 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:
Bishop activity in tactical or endgame positions where a bishop is a key attacking or deflection piece.
This pattern fires in 18 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 969 to 2030, with a median rating of 1456. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_26298 |
|---|---|
| Puzzles where it fires | 18 |
| Min ELO | 969 |
| Median ELO | 1456 |
| Max ELO | 2030 |
| Coverage | 0.18% 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 vsloM — ELO 969, themes: doubleBishopMate, kingsideAttack, mate, side to move: White
- Puzzle vsloM_F — ELO 969, themes: doubleBishopMate, kingsideAttack, mate, side to move: Black
- Puzzle ya9YL — ELO 1172, themes: bishopEndgame, crushing, endgame, side to move: Black
- Puzzle ya9YL_M — ELO 1172, themes: bishopEndgame, crushing, endgame, side to move: Black
- Puzzle ztGcV_F — ELO 1428, themes: advantage, deflection, kingsideAttack, side to move: Black
- Puzzle 01pkQ — ELO 1456, themes: crushing, endgame, fork, side to move: White
- Puzzle 01pkQ_F — ELO 1456, themes: crushing, endgame, fork, side to move: Black
- Puzzle zy6wx — ELO 1567, themes: advantage, endgame, pin, side to move: White
- Puzzle zy6wx_M — ELO 1567, themes: advantage, endgame, pin, side to move: White
- Puzzle zYUwm_F — ELO 2030, themes: endgame, long, 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_26298?
Bishop activity in tactical or endgame positions where a bishop is a key attacking or deflection 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 18 tagged puzzles (0.2% of the set), spanning Lichess ELO 969 to 2030 with a median of 1456.
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.