Top network posts

• 17 A finite set of distinct positive numbers is special if each integer in the set divides the sum of all integers within the set.
• 8 An interesting,scary and an old riddle
• 7 A sudoku with only four given digits and some more rules
• 7 Fit the board into the hole
• 7 The Broken Calculator Problem
• 6 Why can't you lose a chess game in which you can make $2$ legal moves at once?
• 6 The physicist's puzzle
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