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ID18-Commitment to Picking a Tile from the Wall (touch, move, lift)
Question: I lifted a tile from the wall and then realized that I wanted to call the previously discarded tile. Can I change my mind and call that tile instead?
Answer: Once a player moves a tile they are committed to taking their pick from the wall. If the tile was merely touched and not moved in any way the player can change their mind and therefore call the previously discarded tile.
Source: Mah Jong Made Easy 2024, pg. 18 #12