washington post daily diagonal sudoku
### Washington Post Daily Diagonal Sudoku: A Guide to Mastering the Puzzle #### Understanding Diagonal Sudoku Diagonal Sudoku, also known as X-Wing Sudoku or Diagonal Latin Square, is a variant of the classic Sudoku puzzle. Unlike the standard Sudoku, which requires filling a 9×9 grid with numbers 1 to 9 such that each row, column, […]