I was wrong. I was expecting e4 to be even bigger than e2, and from the sheer number of puzzles it certainly looked that way. But no, it was two hours shorter. Still longer than e and e3, mind.
I think my judgement was somewhat out as I worked backwards for the main part, doing the harder puzzles first. Which meant that even though I’d only done about a quarter of the picrosses (picrii?), I’d spent two thirds of the time on them.
Not that any of this is interesting, I just thought I’d mention it. After all, there’s not much to say about a Picross game, especially after four iterations.
e5 soon please?