# Pillen

## Background

The origin of this puzzle is not known.

## Puzzle and Goal

An unsolved puzzle consists of a NxN square of numbers. Along the top and left are number clues.

The goal is to locate N 3x1 or 1x3 regions that satisfy the clues.

## Rules

The solved grid must satisfy the following conditions:

For each integer from 1 to N, there is one region whose numbers sum to that value.

The numbers on the top and left indicate the sum of the cells within regions in that rank.

A cell can be in at most one region.

## Playable Online