The Times Samurai Su Doku: Book 7Paperback, 1 January 2019

This is Su Doku multiplied: every column, row and 3x3 box must contain the digits 1 to 9. Where the puzzles overlap, the rows and columns do not go beyond their usual 9x9 length but the interlocking boxes give you more clues--and more complexity. With another 100 new Samurai puzzles to vex you for hours, lose yourself in the four levels of this book: 10 easy, 40 mild, 40 difficult, and 10 super difficult.