Dart Veider

Patchwork Puzzle Books - 400 Easy to Master Puzzles 9x9 (Volume 2) Dart Veider

Patchwork (also known as "Tatami") consists of a square grid divided into regions ("rooms").
Each room must be filled with each of the digits from 1 to the number of cells in the room.
Every row and every column must contain the same amount of each digit.
Same digits must not be orthogonally adjacent.