Irregular Sudoku (Mini Sudoku Series #19)

Mini Irregular Sudoku for the practice of Sudoku Champs 2015. Irregular Sudoku is often very difficult to understand for newcomers. It is recommended for newcomers to try 6x6 Irregular Sudoku first to get familiar with this Sudoku type before solving 9x9 Irregular Sudoku.
Irregular Sudoku is also known as Jigsaw Sudoku. I am posting this Irregular Sudoku as the 19th Sudoku in the Mini Sudoku Series. Can you solve this Sudoku puzzle?


Rules of Irregular Sudoku



Place a digit from 1 to 6 in each empty cell so that each digit appears exactly once in each row, column, and outlined region. Each outlined region is marked by thick borders.

Irregular Sudoku (Mini Sudoku Series #19)
Irregular Sudoku (Mini Sudoku Series #19)

Previous Mini Sudoku Series puzzle: Odd Sudoku



Frame Sudoku (Daily Sudoku League #85) Solution
Frame Sudoku (Daily Sudoku League #85) Solution





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