Twin Corresponding Diagonal Anti-knight Sudoku = Twin Corresponding Sudoku + Diagonal Sudoku + Anti-knight Sudoku
Twin Corresponding Diagonal Anti-knight Sudoku Additional Rules
Anti-Knight Sudoku all cells at a chess knight move (at a distance of 2 by 1) must hold different numbers.
Diagonal Sudoku Rule: Sudoku main diagonals also contain the digits 1 through 9.
Twin Corresponding Diagonal Anti-knight Sudoku = Twin Corresponding Sudoku + Diagonal Sudoku + Anti-knight Sudoku