The most challenging maps for you.

Are you trying to say that there are no maps more difficult than "Plague Lake"? Then try playing a map like "Podarok 2001" or "Prodigial". I consider those my gold standard. True, some things in "Prodigial" were left unfinished (you can ignore the final battle), but otherwise, I spent about 14 months on it! And in the other one, everything is as it should be; it's several times harder—about 20 months.

"Podarok" was used by us as a map for an internal Clans tournament. Completed in less than 3 months... and without any tricks. In reality, it can actually be completed faster.
But I agree—the first time this map caused me quite a few difficulties! However, if you look at it carefully in the editor, many interesting things are revealed that are VERY well hidden—and if you find them, the Walkthrough of the game becomes significantly easier! In general, I have great respect for the person who created it!!