Sudoku-6up-UR-D Thumbnail of a Sudoku-6up-UR-D puzzle.

Size:
6x6.
Elements:
1, 2, 3, 4, 5, and 6.
Groups: Twenty total.
The 6 rows.
The 6 columns.
The 6 2x3 rectangles.
The upper right corners of each rectangle.
The diagonal elements.
Instructions:
Precise details on group numbering.
Answer grids:
There are 57,600 answer grids,
(including all possible symetrically equivalent grids)

Puzzle Difficulty levels and Examples

Difficulty LevelLowHighExample
Easiest 2 2 Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Easy 3 4 Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Medium 5 6 Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid
Difficult 7 11 Puzzle   ·   3-steps   ·   All-steps   ·   Solution grid