EchoLatch

Build a path one signal board at a time. This quiet logic puzzle turns short breaks into satisfying acts of deduction. Each board has three visible attributes: a shape, a set of marks, and an inner pattern. Place the boards into a sequence so every neighboring pair obeys its connection rule. Read the links, test a board, and watch the whole path take shape. Some links require exactly one shared attribute. Others require all attributes to differ or exactly two to match. A board that looks right in one spot may make a distant link impossible, so strong solutions come from planning ahead and keeping useful candidates in reserve. The game includes 40 handcrafted levels with a gradual difficulty curve: • Learn one relationship at a time in the opening levels. • Meet mixed relationships, extra boards, and tighter chains as you progress. • Revisit completed levels to improve your move count and solve without undoing. • Use the local level list to see your progress and return to any unlocked path. Every placement gives immediate visual feedback. Broken links stay visible as clues, while completed links settle into a clear connected path. You can lift a placed board, exchange boards, restart a level, or undo later-level mistakes. No account or network connection is needed. Your level progress and best move counts are stored on your device, so the puzzle is ready for a commute, a waiting room, or a calm few minutes before sleep.