I’m not complaining about this puzzle (I like it, in fact), but I had to keep track of a lot of a lot more pairs of squares where only one can be black than I’d expect in an “easy” puzzle, and the endgame. . . it took me a while to see why the solution was unique, to be sure.
Very pretty 🙂 And I actually learned sth about 221. I think I knew this some time ago but managed to forget, that when you have a blank in 221 you also have a wall in the opposite spot. Not that it helped in this particular puzzle….
Nice Tapa. Not a fan of them but have to get better at them for sure.
The full lessons on 221s are that is there is a blank, the opposite is a filled in cell, AND so are the cells on each side of the blank. Certainly was at the heart of most of this one, … as well as the understanding that a path can’t be completed through closely neighboring 221s.