for now, it will always 5 recommend problems you have attempted before, prioritizing the ones you solved both (1) longest time ago and the ones that were (2) ha

for now, it will always 5 recommend problems you have attempted before, prioritizing the ones you solved both (1) longest time ago and the ones that were (2) hardest for you. so it will not recommend anything you haven't tried. would you want it to stop recommending a problem once you've mastered it? maybe an indication on the tool so you can mark it as mastered?