Bishop1964 #14Calculationm.youtube.com/watch?v=AzzyR_YIZz0The first puzzle shown in this video is very nice.
Bishop1964edited #15The Woodpecker Method - Day 1m.youtube.com/watch?v=tzK7Cu9Q52cLink to the complete playlist.m.youtube.com/playlist?list=PLVp5Aaip2NECv2nW2GhWPqOjWqZW2h1xP