目前的WCA规则3h条:“No modifications are allowed that enhance the basic concept of a puzzle. Some examples of enhancing the basic concept are: new moves are possible, normal moves are impossible, more pieces are visible, colours on the backside of the puzzle are visible, moves are done automatically, more or other solved states.”
再借用一下子坎拍的孤鸿的顶层错开的图:
在看不到背面正面的块的角度也可以通过顶层的转开一个角度后看到部分的背面的块的颜色,这与规则中“more pieces are visible, colours on the backside of the puzzle are visible”相悖~~