This puzzle was invented by Inabi Naoki.
Puzzle and Goal
An unsolved puzzle consists of a rectangular grid containing number clues.
The goal is to divide the area into rectangular regions based on the clues.
The solved grid must satisfy the following conditions:
Each rectangle contains exactly one clue.
The clue indicates the sum of the dimensions of the rectangle. For instance, a 5 could indicate a region which is 1x4, 2x3, 3x2, or 4x1.