Thanks, skeeter84, fot the puzzle
. Not difficult, but I have enjoyed it a lot. For this type of puzzle it is not necessary to create a twin, IMHO. A single puzzle is OK. To verify the unicity, the procedure I follow is to solve it analitically: if there is more than one solution you find them quickly.
The first of this type I sent, Feb 19, 2014, (
https://www.calcudoku.org/user/2014-02-19 ) was only a 7x7, yours is an 8x8 and I hope someone sends soon a 9x9
.
With respect to the 25x25, thanks in advance to fzpowerman47
, tremendous effort!!!. I have not tried it yet, but at a first glance it does not look very difficult since all cages are of one or two cells, and the puzzle is divided in five groups of five lines, either horizontally or vertically.
The main problems with very very large puzzles, apart of time consuming, are:
First, to provide space in the screen for the puzzle itself (I suppose that, in a mobile, it will be crazy), and to provide space in the window to send the solution, wide enough for around 40 digits.
Second. If you print it on paper you need a DIN A-3 sheet, at least, since, in a DIN A-4, the numbers are very small and it is difficult to follow the rows or columms and also you have little space in case of writing candidates in the cells.
In fact, I am thinking, when the puzzle officially appears, to go outside to obtain a printed copy in a big size paper (I have not an appropriate printer for it). In the other hand, to do it manually looks tedious