(*) See here to build L_shape staircases.

(1) At first, press twice on Visibility, then place teleporters where you'd like to cut off the parts of staircases.


(2) Go back to story 1, and place staircases on the teleporters.


(3) Press twice on Visibility, then the staircases become transparent. Erase the teleporters.

(*)In this stage, when the staircases become transparent, the teleporters sometimes disappear too. In that case, redo from the start.

(4) Go back to story 1, and the staircases will appear.



This is a revised version. The former version is here