It's... another excellent little PWA to run in your Edge browser on Windows 10 Mobile, or pin to your Start screen, as needed. In this case, it's a logic game, akin to the Rubiks Cube, where you swipe away trying to unscramble a randomised grid against the clock. It's hard, it's addictive, it's fun, and the only fly in the ointment is that the developer's server currently has a problem with his security certificate, so you have to put up with a red warning in the URL bar. Oh well. It's perfectly safe in my testing though!
Also related to the security issue is that when going to the PWA game's URL in the first place you may be asked to 'Continue to the web page (not recommended)' - in fact, it's safe. Hopefully the developer can fix the certificate issue in short order!
Of course, you can turn this into an 'app' yourself with PAWA or just pin it 'as is' on your Start screen. Or just add it as a 'Favourite'. It's up to you. If you're confused by the different PWA options then check out my feature here.
Here's the PWA game in action:
A game in progress - it's a veritable 2D Rubiks Cube and tremendously well done; (right) not only dark mode and animations control, but even a way of exporting your solutions. All very sophisticated.
When starting a new puzzle, there are eight square grid sizes, or you can go rectangular - obviously (right) if you go beyond a grid of more than 26 items then you get switched to numbers!!