Four of a kind is not a Group
Four matching tiles are not one Group. Three make a Set; the fourth is spare.
Four matching tiles are not one Group. Three make a Set; the fourth is spare.
Four matching tiles are not one Group. Three make a Set; the fourth is spare.
Takeaway: Three make a Set. Never four.
In Mahjong Island, four matching tiles aren't one Group. A Group is always three.
Three of the 5 Dots make a Set, and the fourth is left over.
That fourth one can still join a Run, like 5, 6, and 7 Dots.
So four of a kind is a Set, plus one tile for another Group.
Next lesson: Seven Pairs is not a win
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