Twin Corresponding Jigsaw Sudoku = Twin Corresponding Sudoku + Irregular Sudoku
Twin Corresponding Jigsaw Hyper 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.
Twin Corresponding Jigsaw Sudoku = Twin Corresponding Sudoku + Irregular Sudoku