These net-shaped extra regions aren’t very compact, so it’s challenging to fit very many of them into a standard 9x9 grid. But I love the color!
Rules:
Normal Sudoku rules apply.
There are three additional regions marked in blue. Each also contains the digits 1 through 9.
Digits within cages sum to the total in the top left corner of the cage.
Estimated difficulty: 1.5 out of 5
Solve on SudokuPad