Diagonal Vudoku

Diagonal Vudoku Rules

Basic Rules

1. Standard Sudoku Rules:
   ○ Each row, column, and specified region must contain all of the numbers from 1 to 9, without repetition.
   ○ A number cannot appear more than once in a row, column, or specified region.

2. Vudoku-Specific Rule:
   ○ The number at the vertex of each marked "V" must be either the sum or the difference of the other two numbers of the "V".

Additional Rules:

• Diagonal Sudoku Rule: Sudoku main diagonals also contain the digits 1 through 9.

Diagonal Vudoku question：

Diagonal Vudoku solution：