The Trap Intuitive version

Consider the sequence of numbers:

• 1 2 3 4 Apply a rotation to all of them:
• 2 3 4 1 Apply a reverse rotation to the last three numbers:
• 2 1 3 4 The numbers 1 and 2 are swapped.

So, 2 rotaions:

• - One rotation affecting four elements.
• - Another rotation affecting only three elements

achieves the swap of two elements within the sequence: the numbers '1' and '2'.

The same reasoning can solve the configuration having 2 edges swapped.

		Click these buttons Reset
1)	U	That's the rotation affecting 4 cubies. After the rotation, the cubie YB Is correctly placed and the 3 cubies YG needs to go in position mub OY needs to go in position lus RY needs to go in position rus A rotation that affects 3 cubies is exactly what we need. So...
After the rotation 1): The next 3 steps apply a rotation to: YG, OY and RY
2.1)	R U R'	This brings the cubie YG onto the place occupied by OY
2.2)	U R	This brings the cubie OY onto the place occupied by RY
2.3)	U2 R'	This brings the cubie RY onto the place occupied by YG