** Detailed instructions for working a group puzzle of type 'Sudoku-15' **

The 15 elements in each group of this type of puzzle are: **0**, **1**, **2**, **3**, **4**, **5**, **6**, **7**, **8**, **9**, **A**, **B**, **C**, **D**, and **E**.

Every group in the puzzle must contain *exactly* this set of elements.

In a Sudoku-15 puzzle, each row is a group numbered as shown in the figure above.

In a Sudoku-15 puzzle, each column is a group numbered as shown in the figure above.

In a Sudoku-15 puzzle, each 5x3 rectangle is a group numbered as shown in the figure above.