Diagonal Sudoku is a variation of Sudoku that has two additional rules:
The numbers in each diagonal must also be different.
The numbers in each row, column, and 3x3 subgrid must also be different.
Diagonal Sudoku is a variation of Sudoku that uses a non-standard grid. The grid is divided into several smaller grids, and the numbers in each smaller grid must be different. In addition, there are also numbers outside of the smaller grids that provide clues to the solution.
The two main diagonals are the lines that run from the top left corner to the bottom right corner and from the top right corner to the bottom left corner. The numbers in these diagonals must also be different from the numbers in the rows, columns, and smaller grids.
Diagonal Sudoku puzzles can be more challenging than standard Sudoku puzzles because they require players to think more creatively and use more problem-solving skills. For example, players may need to use the clues outside of the smaller grids to help them solve the puzzle, and they may also need to use logic and deduction to narrow down the possible solutions.