Diamond 25
Diamond 25 is a mathematical puzzle in which one must use the digits '1' through '9' to get 25, within each diamond composed of 6 pieces without repeating the same digit or summing more than or less than 25. There are 16 diamonds within the larger diamond.
See also
- 36 cube
- Algorithmics of Sudoku
- Blendoku
- Constraint satisfaction problem
- Futoshiki
- Hidato
- Kakuro
- KenKen
- List of Nikoli puzzle types
- List of Sudoku terms and jargon
- Logic puzzle
- Mathematics of Sudoku
- Nonogram (aka Paint by numbers, O'ekaki)
- Str8ts sequential numbers
Further reading
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