On the planet Noveria you must solve a puzzle after you enter the Core at Mira to restore activity to the compound. The solution is as follows. There are three columns. Four discs are in the left column. You must move all four discs to column two or three for the puzzle to be completed. "1" indicates the upper most ring, "4" is the lowest, etc.

Step 1
Move 1 to the middle.
Move 2 to the right.
Move 1 to the right on top of 2.
Move 3 to the middle.

Step 2
Move 1 to the left.
Move 2 to the middle on top of 3.
Move 1 to the middle on top of 2.
Move 4 to the right.

Step 3
Move 1 to the right.
Move 2 to the left.
Move 1 to the left on top of 2.
Move 3 to the right on top of 4.

Step 4
Move 1 to the middle.
Move 2 to the right.
Move 1 to the right.

These steps will solve the puzzle with all four discs being in the right column.