Mahjong Titans Open Tiles in Mahjong
The open-tile rule is the core rule behind Mahjong Titans and most Mahjong solitaire games. A tile must be free before it can be matched.
Practice open-tile reading Open Mahjong Titans and look for pairs that are both uncovered and free on one side.
Play Now The simple rule
A tile is open when it is not covered and its left or right long side is free.
If both long sides are blocked by neighbors, the tile cannot be selected yet.
Visible does not mean open
Many beginners try to click a tile because they can see it, but visibility is not enough.
A visible tile can still be trapped under another tile or squeezed between two neighbors.
Use the rule strategically
The best moves often create new open tiles, especially from high stacks and tight rows.
Before matching, ask which pair will reveal more future legal pairs.
FAQ
Why can I see a tile but not move it?
It is probably covered or blocked on both long sides.
Do both tiles in a pair need to be open?
Yes. Both matching tiles must be open before they can be removed.