Placing and removing the puzzle cubes in Qbeh-1 works differently in Minecraft.

In Qbeh-1, you can pick up a cube and it will instantly go into your inventory. It has the restriction that cubes must have some connection to a yellow block, when placing or picking up.

Qbeh-1 picking up a cube at the end of some cubes

(press pick-up button)

Qbeh-1 picking up a cube at the base of some cubes

(press pick-up button)