3 ms·The ability to rotate pieces would really increase the difficulty factor.by jboggan 6y agoThe ability to rotate pieces would really increase the difficulty factor.Finnucane 6y agoSure, but you'd give up sooner. The idea is to make it just hard enough to keep you engaged, but not too hard to make it seem like work. Semi-mindless amusement.6510 6y agorotate in 4 dimensionsralala 6y agoAnd mirroring! Reminds me of those wooden games with just four pieces.