https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&feedformat=atom&user=45.141.119.26explain xkcd - User contributions [en]2026-06-23T21:09:33ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=Category:Unsolved_Problems&diff=415052Category:Unsolved Problems2026-06-23T14:32:00Z<p>45.141.119.26: </p>
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<div>In 2021 [[Randall]] made a comic, [[2529: Unsolved Math Problems]], about three categories of unsolved math problems. The last category was for "cursed problems", a [[:Category:Comics with cursed items|recurrent theme]] on xkcd. In 2024, almost four years later, a sequel was published, [[2943: Unsolved Chemistry Problems]]. Although it didn't follow the same three-panel setup, the title was similar and the three different problems mentioned were similar as well. A year later, [[3115: Unsolved Physics Problems]] was released with the same setup of the first comic.<noinclude><br />
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[[Category:Comic series]]<br />
[[Category:Science]]</div>45.141.119.26