Allowed Digits
Every marked cell contains one of the listed digits.
Parameters
| Parameter | Meaning | Default |
|---|---|---|
| line | The cells in order, for example r1c1-r1c2-r1c3. | Required. |
| digits | The allowed or required digits, listed explicitly; repeats in the list count where the rule says so. | Required. |
Maths
Class: first-order.
The shared predicates define the notation and every named predicate.
∀c∈line: D(c)∈digits
Every cell contains one of the listed digits.
Example
---
format: open-rules
title: Allowed Digits example
setter: Example
source: ""
case: ""
library: https://rules.sudoku-sleuth.com/
status: read
---
```rules
sudoku 9x9
allowed-digits r1c1-r1c2 digits [2,3,5,7]
```
Satisfies the rule: r1c1=2, r1c2=3. Both marked digits belong to the allowed list.
Breaks the rule: r1c1=2, r1c2=4. 4 is absent from the allowed list.