Adjacency Unlocks

Adjacency Unlocks is an unlock structure used in puzzle hunts. In hunts that use it, puzzles are arranged in a space where each puzzle could be considered adjacent to at least one other puzzle. When a puzzle is solved, all puzzles that are adjacent to it become available.

Hunt Application
Adjacency Unlocks, except in rare cases, require the presence of a Puzzle Map in order to be used properly,

Notable Examples

 * Puzzle Boat 2/3 - Both of these hunts utilized Adjacency Unlocks (as well as Unlock Juice) by starting teams in a certain position on a grid and allowing them to use their Unlock Juice to open up any spaces adjacent to ones they've already opened.
 * MIT Mystery Hunt 2005 - Even though each set of color-coded puzzles is on its own grid system, the Adjacency Unlocks still function just fine, albeit unlocks in one color don't unlock those in other colors.