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第4步:底面边角(底前左,底前右,底左后,底后右) 这一步是要给底平面上的4个边角方块定位和定向。这是通过先定位后定向来完成的。这次的4个方块不是分别安放。而是作为一组一次同时完成。依照下述关于4A—4F 的说明,一遍即可完成这一步骤。4A:首先有必要转动底平面使尽可能多的边角方块各就其位,而暂不考虑其方向问题,(暂时也无需照顾那些底平面上的边缘方块)。只要转动底平面即可使至少
Step 4: Bottom Corner (Bottom Front Left, Bottom Front Right, Bottom Left Back, Bottom Back Right) This step is to locate and orient the 4 corner squares on the bottom plane. This is done by targeting first. This time the four boxes are not placed separately. It’s done as a group at a time. Follow the instructions below for 4A-4F to complete this step in a single pass. 4A: First it is necessary to rotate the bottom plane so that as many corner squares as possible, regardless of their orientation, (for the time being there is no need to look after the edge squares in the bottom plane). Just turn the bottom plane to make at least