"Change puzzle" refers to selecting a completely new puzzle - either the one prior to the current one, or the one after. Does that make sense?
The "Any progress" text means basically that all moves that you have taken, all the work you have done so far, will be lost if you decide to go to another puzzle/restart the current puzzle. You will have to start afresh if you return to this puzzle. The data will not be saved.
This recent WIP image might make a bit more sense. Maybe...
Thanks again for the assistance, BTW
[EDIT] Looking at that image, I might just change the GUI title to something a bit less vague than "Change puzzle". It's still WIP after all.
The "Any progress" text means basically that all moves that you have taken, all the work you have done so far, will be lost if you decide to go to another puzzle/restart the current puzzle. You will have to start afresh if you return to this puzzle. The data will not be saved.
This recent WIP image might make a bit more sense. Maybe...
Thanks again for the assistance, BTW
[EDIT] Looking at that image, I might just change the GUI title to something a bit less vague than "Change puzzle". It's still WIP after all.