# Nanro

## Background

Nanro first appeared in a Nikoli publication.

## Puzzle and Goal

An unsolved puzzle consists of a rectangular grid divided into regions. Some numbered clues have been provided.

The goal is to fill in numbers in each region.

## Rules

The solved grid must satisfy the following conditions:

Each region must contain exactly one number value.

Each number N must appear N times in the region.

Each 2x2 area has at least one empty cell.

All numbers are orthogonally contiguous.

The same number can't appear on opposite sides of a region barrier in orthogonally neighboring cells.

## Playable Online