The second weakness I noticed, is in the visualization-II of future positions. Before I start working on my thought process, I want to find out if I can improve in the visualization-II of future positions. I found that this visualization leaned heavily on a certain set of subtasks. The adage being "you have to have perfect vision of the current position first, before you can improve at the future positions".
And so I happened to arrive at mate in one, in an attempt to improve my vision. Mate in one is the ultimate current position, since the position has no future. Incidentally, I started with mate in one "hard" (M1-h), since I didn't know the difference with "easy"(M1-e).
The discussion about M1 is a bit obscured by the fact that we don't have an absolute calibration point. We don't know how fast a FM does this M1 exercise, and the chain of assumptions to come up with an educated guess is cluttered with noise and tolerances. "You have to become 6x faster than you are" is a bit vague, especially when the improvements of the first week are ignored. So I have to work with my gut feeling in stead "is there room for improvement here?", and that probably is good enough for me.
When investigating the subtask of M1-h, I stumbled upon the subtask "Find all checks". Thomasz tried it, and he found that he was way slower in FAC than in M1-easy. So apparently he has found a way to find the mate without looking at all possible checks. Now that is stunning. Has his unconscious mind worked its mythical magic, or is there something else going on? I think the latter. The subtask FAC stems from M1-h, not M1-e. The "hard" mates are derived from a database with compositions. In a composition, the composer usually builds in a lot of "temptations". That are checks that looks like mate, but which aren't. This makes that looking for checks and control if it is actually mate or just a scam, are subtasks that are overly abundant in M1-h, but not in M1-e. Although they happen every now and then in M1-e.
I think that the skills that can be acquired by training the subtasks of M1-h, are very well transferable to overall tactics, so I stick with that for the time being.