This weeks puzzle comes from “Quark special”, a Japanese puzzle booklet or magazine that I once obtained through the late Nob Yoshigahara.
You can check your solutions here
New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. You are welcome to remark on the difficulty level of the puzzles, discuss alternate solutions, and so on. Puzzles are rated on a scale of 1 to three stars.
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