enxio27 wrote:
OK, a regular Disjoint Groups puzzle (3x3 boxes) works, but when I try it with NO boxes (Latin Square), I don't get any colors, even though I specify Disjoint Groups for the extra groups.
In the user guide I wrote:
This is available only for a grid with blocks, whether square, rectangular or jigsaw.
See also the user guideYou should get this warning message "Disjoint groups requires blocks (regular or jigsaw)"
Indeed a Latin Square (NO boxes) with Disjoint Groups is logically equivalent to a vanilla sudoku (without DG). For 3x3, just reorder the rows: 147258369 -> 123456789. Dito for the columns. And you get a vanilla sudoku. So there isn't really a need to support this combination of variants.
For example,
Uwe's Colour Sudoku (Plum Sudoku) can be transformed into this vanilla sudoku
Code:
+-------+-------+-------+
| . . 5 | . . . | . 1 . |
| 3 . . | . 2 . | 4 . . |
| 7 . . | 8 5 . | 9 . . |
+-------+-------+-------+
| . 7 . | 6 . . | . . . |
| 6 . 9 | . . . | 5 . 1 |
| . . . | . . 4 | . 7 . |
+-------+-------+-------+
| . . 1 | . 3 8 | . . 7 |
| . . 2 | . 6 . | . . 9 |
| . 3 . | . . . | 8 . . |
+-------+-------+-------+
I might change this in the future since combining DG + other variant(s) like diagonals cannot be transformed into a sudoku.
Anyhow, you can already use DG for a latin square. First create a sudoku WITH rectangular blocks and DG. Then choose Design: Blocks: Remove all.
Note: same limitation for Greater / Less Than.