mb66 Latchwell

mb66 Latchwell is a logic puzzle about closing a restless well. Place plug tiles and socket tiles on a three-column board, then lock a column when both tiles belong to the same family.

How a seam works
The upper row takes sockets. The lower row takes plugs.
A column locks only when both tiles share a family: Notch, Key, or Wave.
Colors can differ. A same-color pair is a chorus. A mixed-color pair is an aurora.
The pocket can hold one tile while you plan the next move.
Each placement raises pressure. Finish a seam to lower it. If the meter fills, that run ends and you can start again.

Nine wells
Later wells remember the center family from the previous seam, or swap the upper and lower rows. Read the hint on the board before you place a tile.

What this is
A self-contained puzzle. There is no real-money play, no cash prize, and no account to create. Progress stays on the device.

How to start
Tap a tile in the tray, then tap an empty cell. Open the atlas to choose a well, or the rules page to review pairs.