Mahjong Sudoku

Game description
Sudoku combined with Mahjong. Instead of numbers you need to place Mahjong stones with 1-9 dots.
How to play
Sudoku combined with Mahjong. Instead of numbers you need to place Mahjong stones with 1-9 dots. Click on an empty spot to get a popup with the mahjong stones. In every row, column and 3x3 grid you only can place a value once.