On the Subject of The Bulb

How many bomb defusal experts does it take to screw in a light bulb?

This module has two buttons labeled I and O and a light bulb, which is either see-through (translucent) or opaque, and is one of six colors: blue, green, purple, red, white or yellow.

If you incur a strike because you pushed a wrong button, ignore it and continue.

If you incur a strike because you unscrewed or screwed in the bulb at an incorrect time, you must undo that and then continue.

Begin at step 1.

Step 1
  • If the light is on and the bulb is see-through, press I and go to Step 2.
  • If the light is on and the bulb is opaque, press O and go to Step 3.
  • Otherwise, unscrew the bulb and go to Step 4.
Step 2
  • If the bulb is red, press I, then unscrew it and go to Step 5.
  • If the bulb is white, press O, then unscrew it and go to Step 6.
  • Otherwise, unscrew the bulb and go to Step 7.
Step 3
  • If the bulb is green, press I, then unscrew it and go to Step 6.
  • If the bulb is purple, press O, then unscrew it and go to Step 5.
  • Otherwise, unscrew the bulb and go to Step 8.
Step 4
  • If the bomb has any of the following indicators: CAR, IND, MSA or SND, press I and go to Step 9.
  • Otherwise, press O and go to Step 10.
Step 5
  • If the light went off at Step 1, press the same button again, then screw the bulb back in.
  • Otherwise, press the button you haven’t yet pressed, then screw the bulb back in.
Step 6
  • If the bulb went off when you pressed I, press the button that you pressed in Step 1, then screw the bulb back in.
  • Otherwise, press the button that you pressed in Step 2 or 3, then screw the bulb back in.
Step 7
  • If the bulb is green, press I, remember SIG and go to Step 11.
  • If the bulb is purple, press I, then screw it back in and go to Step 12.
  • If the bulb is blue, press O, remember CLR and go to Step 11.
  • Otherwise, press O, then screw the bulb back in and go to Step 13.
Step 8
  • If the bulb is white, press I, remember FRQ and go to Step 11.
  • If the bulb is red, press I, then screw it back in and go to Step 13.
  • If the bulb is yellow, press O, remember FRK and go to Step 11.
  • Otherwise, press O, then screw the bulb back in and go to Step 12.
Step 9
  • If the bulb is blue, press I and go to Step 14.
  • If the bulb is green, press I, then screw it back in and go to Step 12.
  • If the bulb is yellow, press O and go to Step 15.
  • If the bulb is white, press O, then screw it back in and go to Step 13.
  • If the bulb is purple, screw it back in, then press I and go to Step 12.
  • Otherwise, screw the bulb back in, then press O and go to Step 13.
Step 10
  • If the bulb is purple, press I and go to Step 14.
  • If the bulb is red, press I, then screw it back in and go to Step 13.
  • If the bulb is blue, press O and go to Step 15.
  • If the bulb is yellow, press O, then screw it back in and go to Step 12.
  • If the bulb is green, screw it back in, then press I and go to Step 13.
  • Otherwise, screw the bulb back in, then press O and go to Step 12.
Step 11
  • If the bomb has the remembered indicator, press I, then screw the bulb back in.
  • Otherwise, press O, then screw the bulb back in.
Step 12
  • If the light is now on, press I.
  • Otherwise, press O.
Step 13
  • If the light is now on, press O.
  • Otherwise, press I.
Step 14
  • If the bulb is opaque, press I, then screw the bulb back in.
  • Otherwise, press O, then screw the bulb back in.
Step 15
  • If the bulb is see-through, press I, then screw the bulb back in.
  • Otherwise, press O, then screw the bulb back in.