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― Configuration code: RRmUmRvRmDmRvU
- Start from
- Close the bridge on one side (west) and rotate 90 degrees clockwise
in order to obtain a 3x2 rectangle with a
stack of three tiles in the North-East position with the top one (third floor)
of type slash and connected to the Central-East tile
- Open by hinging the stack about the South side (first-second floor) and
the East side (second-third floor) into the final shape
