The Trap Y method
When the cube shows this configuration, cubies OY and YG are misplaced.
There are 2 perfectly equivalent configuration:
What change is just the orientation of the 2 cubies. At this stage we do not care about the cubies RY and YB.
(The example 'Tutorial.Mthod Y.Orientate edges' shows how to change the rotation of 2 edges)
Cubies on last layer (yellow) cannot be placed anywhere.
Cubies on the third layer can only occupy 2 out of the 4 available positions.
If the first edge in this layer is wrongly placed, it will result in the mandatory inversion of the RY and YB cubies in the end.
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| 1) | YG goes onto the Workbench, then to its neighboring position.The 'U' rotation brings the edge YG onto the workbench, and using the Sledgehammer (U F' U' F) moves the cubie to its neighboring position. |
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| 2) |
OY goes onto the Workbench, then to its neighboring position.The same position occupied at the beginning. What changed is that now the cube is solvable. |
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| 3) |
Brings all the cubies the thir correct position.The 'U' rotation brings the edge OY onto the workbench, and using the Sledgehammer (U F' U' F) moves the cubie to its neighboring position. |
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This configuration is also analyzed in the section Method 'DIY' The Trap and the section 'Extras' The Trap (In different ways.)