the first thing that came to mind for me was @au-voleur’s infamous grid logic puzzle, which ensnared the entire community in fierce debate for two days straight. additional shout-outs to the late jack lance’s maysu [sic] puzzle and one of the later levels in his game pushing it (tho that whole game is plenty silly). as for general types of logic puzzle, nonorthogonal loop genres like kouchoku or angle loop get p wacky, but for my money there’s this obscure genre called ladders that takes the cake for being utterly unparseable despite having a fairly straightforward ruleset. outside of logic puzzles, cryptic crosswords are perhaps one of the most infohazardous puzzle types i’ve ever had the misfortune (affectionate) of becoming literate in—a not-insignificant portion of my brain is now permanently, exclusively dedicated to generating cryptics any chance it gets.
