X-Factor Sudoku

Description

X-Factor is a classic Sudoku variant. In addition to the normal rules of Sudoku, both the main diagonals must also contain all the digits from 1 to 9. Puzzles are categorised into four levels of difficulty: mild, medium, tricky and extreme. Sixteen pages with 50 puzzles, plus solutions.

Available only as a PDF download to print out at home. Immediate access via order confirmation email.