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a reconfigurable sequential move puzzle, designed by William Keister in 1972 and produced by Binary Arts in 1986. the box is well-travelled but the puzzle is flawless.
from Jaap Scherphuis' Puzzle Page:
The pattern of the four blocking keys may be changed (by temporarily removing the blocking pin that keeps them fixed), and each of the 16 patterns gives rise to a different puzzle. The easiest key pattern is 1111, because this allows you to switch all bars in order from left to right. This pattern comes in handy when you want to reset the puzzle. The hardest pattern is 1110, which needs 170 moves. This pattern gives a puzzle that is equivalent to Spinout (but with 8 switches).
♫:
▪ everything i have is in the photos.
▪ buyer pays shipping, calculated after the auction.
▪ shipment is by USPS Priority Mail, insured for the full sale price, and trackable.
▪ payment via PayPal only.
▪ all puzzles in my collection have been kept out of sunlight, in a humidity-stable room or sealed plastic container, away from pets unless they can solve them, and in a non-smoking household.
thank you for looking, and good luck if you bid.
:cameron: