7This is the ultimate in the sudoku variants world
5 interlocking sudoku variants, each with different rules, put together in one puzzle, arranged in the Samurai Sudoku format
Each puzzle consists of any of the following sudoku variants:

• jigsaw sudoku
• diagonal sudoku
• consecutive sudoku
• non-consecutive sudoku
• odd-even sudoku
• greater-less sudoku
• hyper windoku
• killer sudoku
• frame sudoku
• outside sudoku

So, what you get is a totally LOCO (or crazy) Sudoku with multiple rules but always with one solution And there is 81 such puzzle, which is like having more than 400 standard 9x9 sudokus.
Are you ready for this