After starting a nonogram level, it seems you can't go back to it because you're just prompted to sign up or log in. As mentioned already they're also shitty puzzles.
Unfortunately, these days, "Show HN" is a code phrase for vibe-coded and untested projects. I was optimistic for this one because I love puzzles.
Unfortunately, these days, "Show HN" is a code phrase for vibe-coded and untested projects. I was optimistic for this one because I love puzzles.