I worked on 9 puzzles in Aagaard´s CALCULATION - but missed three (the last ones). Not sure if it was due to the fact that I simply made too much and wasn´t fresh enough anymore, or because it was simply beyond my abilities. However, the plan is to increase from the usual 6 puzzles (which I went for throughout Smith´s book) to 10!
Although all three are "nice" - here´s my favourite (Black to move):
I like it, because it is so tempting for White to believe "YES - I got you!" but yet so wrong! 😏
In addition, I spent quite some time on CT-ART 4.0 (actually, I did so before I started with Aagaard) - but only made some 10 rating points (to 2460)...