Smithsonian Unolingo: Sudoku puzzle with letters each

Smithsonian Unolingo Sudoku puzzle with letters each Unolingo puzzle is a 10x10 crossword without clues Play Unolingo USA TODAY Games Unolingo combines the best elements of crossword puzzles and sudoku offering an engaging and satisfying experience for puzzle enthusiasts Games Puzzles Smithsonian Magazine Unolingo Like a Sudoku puzzle with letters each Unolingo.