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Square-1 - How To Solve The World's Most Challenging Puzzle
Copyright 1993, Richard Snyder and Needham Graphics, Inc.
This booklet contains a five step Square-1 solution (make cube shape, separate U/D corners, separate U/D edges, solve corners,solve edges).
ISBN: Self published without ISBN number
This item is no longer in print. Collectors trying to purchase this item will want to check online used book sellers such as this one.
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