Open Rules

Clone

All listed cells contain the same digit.

Parameters

Parameter Meaning Default
cells The marked cells, for example r1c1-r1c2-r2c2. Required.

Maths

Class: first-order.

The shared predicates define the notation and every named predicate.

∀a,b ∈ cells: D(a)=D(b)

Every cell in the group contains the same digit.

Example

---
format: open-rules
title: Clone example
setter: Example
source: ""
case: ""
library: https://rules.sudoku-sleuth.com/
status: read
---

```rules
sudoku 9x9
clone r1c1-r1c2
```

Satisfies the rule: r1c1=1, r1c2=1. Both cells contain 1.

Breaks the rule: r1c1=1, r1c2=2. The cells contain different digits.