Solo mode - Challenges

[cheval_raye]

Thank you for your answer. I didn't take the time to think the chance of an "invalid" grid would be so high with these options, but I guess it can't really be avoided when you need to stack ll these elements in a small grid I'm fairly sure BGA would not let the game load at all if it took too much time to generate the grid.

[Tof63]

You both found nearly the same solution in fact to add the missing item.
I'm still not convinced, but ok : I'll add an option to allow or not solutions using less elements.
But it will be allowed by default, because well, it's my damn game

Option added!