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Friday, January 6, 2012

Mechanical Puzzle of the week: Cast News

I was fortunate to know the inventor of this puzzle: Nob Yoshigahara. Nob invented this when he was just 19. The object is to separate the 2 halves. Each piece is identical. This puzzle has been made in many forms by unscrupulous businessmen. This form, in metal, is the best rendition. I solved another rendition by using an alternate method, which would not work on this model. Highly recommended! Buy 2 copies: one for yourself, and one as a gift.

Click here for the solution.


  1. Excellent choice! This was the first 'proper' mechanical puzzle that I ever owned, and I still pick it up even now!

  2. This is my favourite puzzle from the Hanayama cast range!