[x] save puzzle and resume [x] "clue complete" detection
- detect whether or not the clue is fully encoded in the board. [x] in-game tutorial
- spotlight mode on constantly
- telling you what to do next [ ] Hint mode - prioritize deductions in tile set. tutorial seed 10685644273882258719 is weird
[ ] Hidden pair practice
- Find a puzzle with hidden pairs, disable "completed" clues.
[ ] "Seasons"
- Compete with yourself on time every 100 games.
Bugger!!! 7188078879390299822
Multiple hidden pairs 672594717558837510
very hard 8666405260009089257