# Page Not Found

The URL `files/81IgMGopDISpqKJn66Ex` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [跨区数组（DDS）](https://sudoku.kazusa.tech/full-marking-techniques/11-distributed-disjoint-subset.md)
- [待定可规避矩形链（AAR 链）](https://sudoku.kazusa.tech/chain-theory/08-almost-avoidable-rectangle-chain.md)
- [秩理论初步](https://sudoku.kazusa.tech/rank-theory/01-introduction-to-rank-theory.md)
- [Ⅳ：抽屉原理简介](https://sudoku.kazusa.tech/appendix/01-pigeonhole-principle.md)
- [全双值格致死解法（BUG）](https://sudoku.kazusa.tech/full-marking-techniques/08-bivalue-universal-grave.md)

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### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
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```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://sudoku.kazusa.tech/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://sudoku.kazusa.tech/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/full-marking-techniques/11-distributed-disjoint-subset.md`).

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