HyperSudoku-15

Size:

15x15.

Elements:

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, and E.

Groups: Forty-nine total.

The 15 rows.

The 15 columns.

The 15 5x3 rectangles.

The 4 3x5 inner rectangles.

Instructions:

Precise details on group numbering.

Answer grids:

Puzzle Difficulty levels and Examples

Difficulty Level	Low	High	Example
Easiest	2	2	Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Easy	3	4	Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Medium	5	8	Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Difficult	9	14	Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Challenging	15	20
Tournament	21	29
TournamentPlus	30	45
Perplexing	46	60