# Nanbaboru

## Background

This puzzle was developed by Inaba Naoli.

## Puzzle and Goal

An unsolved puzzle consists of a square grid. Some cells contain circles, circled numbers, or X.

The goal is to put circled numbers in some of the cells, according to the rules.

## Rules

The solved grid must satisfy the following conditions:

Each circle must contain a number.

Each number must appear exactly once in each row and column.

Cells with initial X may not contain numbers (hence there may be empty cells as well).

## Playable Online