, this is a video of the first electronic puzzle in existence, the "Princeps Puzzle".
Some nice information as pointed out by Jaap may be found here inside the 1971 article
of Popular Electronics:http://www.swtpc.com/mholley/PopularEle ... ay1971.htmVIDEO
As stated, the original project was given as a DIY kit, and the one presented in this video
is the only original one I have ever seen.
It is based on binary logic (similar to the Chinese rings, the Hexadecimal Puzzle, and the Spinout),
while it requires to turn out all the lights. It has eight buttons, and this freedom may cause some
extra confusion, but only two have an effect at each time.
For its solution, it requires no less than 170 moves. Many thanks to Jonathan Stefanou for helping
me fix the puzzle after a minor accident, and now it even works with a... Greek electricity plug!
The video was taken at my home's balcony on the beautiful island of Kastellorizo.
PS. Apologies for my camera misbehaving, it had an accident while climbing at the mountain two months ago!