About Defuse

Defuse is a free daily logic puzzle from Mind Loft. Every day it shows one device: a row of colored wires, a serial number, a battery count and an indicator light, with a short manual of rules beside it. Every wire is cut unless a rule protects it, and exactly one order of cuts obeys every rule. You work out that order and tap the wires in it.

The rules are plain sentences. Never cut a wire right beside the one you just cut. The black wire is the final cut. With exactly two batteries, cut every yellow wire before any white wire. Some rules only apply when their condition is true of the device in front of you, so part of the puzzle is working out which rules count today. There is no guessing: the first wrong cut ends the day, and the ending shows which rule it broke and what the safe order was.

Boards grow through the week. Monday and Tuesday are Gentle, four wires and three rules. Midweek is Moderate, five wires and a rule that does not apply. Friday and Saturday are Tough, six wires where the order has to be planned ahead, and Sunday is the biggest board of the week with seven. Everyone gets the same device, and the fastest solve leads the board.