3 Switch Problem

3 Switch Problem is a puzzle game in which you identify which of three switches controls an apparatus. You work through nine challenges in the 3-Switch Problem Puzzle Park, while talking to other kids and playing outdoor activities. Each challenge takes place in a lobby with three switches and an adjoining room containing the apparatus. One switch controls it; the other two do nothing. You can enter the apparatus room only once per challenge, and must identify the active switch in all nine challenges in a row to win.

The puzzle park

The park has three buildings, each containing three challenges. You start at the gate and progress through the buildings. If you fail one of challenges 1–3, you walk back to the first challenge; if you fail one of challenges 4–9, you return by train. The game takes about one hour to complete.

The fountain demonstration

An outdoor fountain is also controlled by one switch on a three-switch panel. Unlike the challenge apparatuses, the fountain is visible as you operate the switches. Its active switch is randomized each time you return to the demonstration.

The original riddle

The game is based on the One Light and Three Switches riddle. A light bulb is inside a closet behind a closed door, and starts off. Three switches outside the closet include one that controls the bulb. You can flip the switches, but once you open the door to check the light, you cannot move them again. The puzzle is to determine with certainty which switch controls the bulb. The game has no closet light bulbs, but completing its nine challenges is intended to help players get closer to solving the original riddle.