Puzzle 74: Double! Heteromino Divide the white squares into polyominoes of size 3 such that no two identical polyominoes that are also identically oriented are orthogonally adjacent. Expected difficulty Medium • Answer • Comment/E-mail if you want a solution to be published Puzzle 74: Double!Tridivision Of course this has to happen with a trivial puzzle. There you go, your puzzle consumption after 40 days. Advertisements Share this:TweetMoreEmailPocketPrintTelegramShare on TumblrWhatsAppLike this:Like Loading... Related This entry was posted in Difficulty: Medium and tagged heteromino, naoki inaba, puzzle. Bookmark the permalink.