Rules & objective
Uses all 28 double-six tiles, including double blank. First leader is chosen by lot or your selected seat; any own tile may lead. Match identical pips, including blank with blank. Block and Draw have only two ends; doubles are crosswise but never spinners. Choose a tile/end or a draw preview, then confirm. No pass if a legal tile must be played or usable drawing remains. Blocked means every seat passes in succession. End-of-hand tiles are revealed for scoring; otherwise only your hand is visible. Local handoff hides all private tiles until Show my tiles. Computer and hints use only own hand, public layout and unknown-tile possibilities, never future yard or opponents’ private tiles. Undo/redo restores real actions; computer undo includes responses after your last action. Restart repeats this deal/settings; New changes the deal. Rules and score details pause computers. Swipe pans without acting; zoom and rotation retain game and preview. This is untimed casual play with automatic scoring, not optional manual muggins penalties.
Draw profile: two/three receive seven tiles each, four receive six. Draw one tile at a time; drawing is optional even if you could play, and you may continue drawing after a playable tile. The final two yard tiles cannot be drawn. A turn must end by playing unless no tile fits and only those two remain, when you pass. Out/blocked scoring is opponents’ remaining pips minus the unique lowest player’s own pips; a lowest tie awards nothing. Targets are 100 for two and 61 for three/four; the next leader rotates from the previous leader.
Controls
Play directly on the cards or board with mouse or touch. Coordinate selectors are optional keyboard aids.
Worked example
When no legal tile is available, draw according to the yard rule. Having a legal tile does not permit an arbitrary draw for a better one.