The Spotlight Puzzle is a puzzle found in Silent Hill: Origins, in the Artaud Theater. Travis Grady must insert four light bulbs to return a voltage into the theater circuits in order to gain access to the stage.
B has to be half the wattage of D; A+B must not exceed C; Wattage of D must not exceed A.
There are: 125W, 250W, 500W and 750W light bulbs, so:
A = 500W
B = 125W
C = 750W
D = 250W
After correctly placing the bulbs, the switch at the end of the catwalk can be pulled to turn on all the spotlights.