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Hanayama Toys of Japan is respected world wide for their selection of high quality and extremely challenging puzzles and toys. Many of their puzzles were designed by Nobuyuki Yoshigahara "NOB" who was one of Japan's most celebrated inventors and commentators of puzzles. Nob was especially interested in metal mechanical puzzles and he designed many of them.
The Puzzles in this Category...
If you are a fan of metal mechanical puzzles be sure to read the short but informative biography of Nobuyuki Yoshigahara at Wikipedia.
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