Twin Corresponding Diagonal Jigsaw Sudoku = Twin Corresponding Sudoku + Jigsaw Sudoku + Diagonal Sudoku.
Twin Corresponding Diagonal Jigsaw Sudoku Additional Rules
Irregular Sudoku Rule: Each row, column, and irregularly shaped block must contain all the digits (1-9) without repetition. This is the key difference.
Diagonal Sudoku: Sudoku main diagonals also contain the digits 1 through 9.
Twin Corresponding Diagonal Jigsaw Sudoku = Twin Corresponding Sudoku + Jigsaw Sudoku + Diagonal Sudoku.