Killer Samurai Sudoku

This is Volume 9 of the series of books with the most difficult variant of Sudoku puzzles... Killer Samurai Sudoku! Be warned, all these puzzles are very difficult! They are split into three levels of difficulty, but be prepared to spend hours on each puzzle. In this volume 9, there are: 75 Killer Samurai Sudoku 20 Diagonal Killer Samurai Sudoku X 5 ZERO Killer Sudoku Samurai! Ready for this?