Rename Mount Euler

[deWalk]

Due to the ever shifting problem rankings, problems keep popping in and out of the required ranges for mount Euler (which I personally find quite frustrating).
So I propose to rename it to "The Euler Moraine" or "Euler Landfill" or maybe somewhat more impressive "Euler Avalanche" ?
(On second thought: Mountains now tend to become unstable due to climate crisis, hmmm )

[underThe]

LOL! ...and if we can solve every problem up to and including level 19 (the top of Mount Euler), all the way across, so it is flat, we will have completed "The Euler Landfill"!

[deWalk]

... looks like you are not required to solve exactly the grey colored problems, but any unsolved problem in this level (line in Mount Euler diagram) will do.
That make's it much easier ...

[underThe]

... looks like you are not required to solve exactly the grey colored problems, but any unsolved problem in this level (line in Mount Euler diagram) will do.
That make's it much easier ...

Yes, that is how to do it. And if you check the difficulty activity chart on each problem, you can see if a particular problem is likely to change difficulty by the time you solve it. Some problems have their rating go up and down, (as you know), and by looking at the chart, you can guess or estimate whether it will be stable in the near future. Almost like checking the snow conditions or weather before climbing an actual mountain!

One can just solve the lowest % difficulty for each level, but those low percentage difficulty problems may be unstable enough to drop a level by the time the entire mountain is finished.

There is also this resource to track problem difficulty: https://projecteuler.net/problem_ranks