Provide export string for external solver as not available in app

[cladmi]

When trying to tackle harder puzzles I did often get stuck. I would often bail.

I do sometime screenshot them and later enter them manually on https://www.sudokuwiki.org/sudoku.htm to learn about what I missed (usually on computer).

I found this great to progress as was not anymore just blocked but with a new tool to use in a real situation.

What would help is for sure an integrated version of the solver with infos. But in app UI may be hard so as a backup it would already be helpful to get a https://www.sudokuwiki.org/sudoku.htm share link or any other detailed solver.