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A new challenge to the Square-1 / Cube 21.
This Square-1 with four layers was first presented on the forum in 2007. One year later mass production began.
This puzzle was a case of parallel invention. James Lee is one of at least two. The other inventor is so far unrevealed.
It is sold with black and white als body color.
Edge length: 57 mm
Weight: 115 grams
If you're looking to buy, eBay is the one place you can find almost anything... if you're willing to wait for it, then pay the price!
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