What are jigsaw sudokus?

Whenever a puzzle becomes popular, people will make different versions of it in order to gain more popularity. I have learned that if you want something to succeed, then you need to change it up every now and then. Otherwise, it becomes boring with people. Therefore, sudoku has created different versions to make sure that it doesn’t get old. Today, there are jigsaw sudokus.

These can be done online where the puzzle player completes the puzzle. The main rules are the same for jigsaw puzzle as they are for a sudoku puzzle. However, instead of having a three by three subgrid, you have different shapes that are to be used as the three by three subgrids. Then you make sure that the numbers one through nine are in each row, column and shape.