Category: Updates

What is the smallest Sudoku?

The fewest clues required for a proper Sudoku is 17, but not all completed grids can be reduced to a proper 17 clue Sudoku. About 49,000 unique (non-equiv...

What is Cypher number?

In a substitution cypher, one letter, number, or symbol represents a letter. In our case, one number represents one letter. A=1, B=2, C=3, and so on. You ...

How can I improve my riddles?

5 Tips to Dramatically Improve your Riddle Solving Ability Challenge your assumptions. Watch for the wordplay. Think metaphor. Misdirection. Relax and sle...