Diagonal Sudoku Guide: X Sudoku Rules and Puzzles

If there is any Sudoku type that is very similar to Classic Sudoku, then it is Diagonal Sudoku. If someone knows about Classic Sudoku Rules, then it is very easy to describe the additional rules of numbers 1 to 9 coming uniquely on two main diagonals. However, solving a Diagonal Sudoku sometimes becomes very tricky. Diagonal Sudoku is known with different names, e.g., X Sudoku, Extreme Sudoku, or Sudoku X. However, I will use the standard name Diagonal Sudoku for this type of puzzle. Recently, I have created a few Diagonal Sudoku puzzles, and this page is being created to give reference to these puzzles.

Rules of 9x9 Diagonal Sudoku

Place a digit from 1 to 9 into each of the empty squares so that each digit appears exactly once in each of the rows, columns, outlined 3x3 box, and two main marked diagonals.

Following is the link to the 9x9 Diagonal Sudoku puzzles

Diagonal Sudoku (Fun With Sudoku #242)

Diagonal Sudoku (Daily Sudoku League #182)

Diagonal Sudoku (Fun With Sudoku #209)

Diagonal Sudoku (Daily Sudoku League #176)

Sudoku X (Fun With Sudoku #147)

Extreme Sudoku (Fun With Sudoku #131)

Diagonal Sudoku (Fun With Sudoku #122)

Diagonal Sudoku (Fun With Sudoku #115)

Diagonal Sudoku (Fun With Sudoku #75)

Diagonal Sudoku (Fun With Sudoku #62)

DIAGONAL SUDOKU (QC-48)

Rules of 6x6 Diagonal Sudoku

Place a digit from 1 to 6 into each of the empty squares so that each digit appears exactly once in each of the rows, columns, outlined 2x3 box, and two main marked diagonals.

Following is the link to the 6x6 Diagonal Sudoku puzzles