Sudoku -- from Wolfram MathWorld

Sudoku (literally, "single number"), sometimes also is a pencil-and-paper logic puzzle whose goal is to complete a grid satisfying various constraints. In the "classic" Sudoku, a 9×9 square is divided into 3×3 "regions", with various squares filled with "givens." Valid solutions use each of the numbers 1-9 exactly once within each row, column and region. This kind of sudoku is therefore a particular case of a Latin square. Under the U.S.-only

Math Games:Sudoku Variations

Sudoku -- from Wolfram MathWorld

Wolfram, Alpha S_LV_S Crossword Puzzles—Wolfram

A Novel Image Steganographic Scheme Using $$8 imes 8$$ Sudoku

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Sudoku - A Math Puzzle • ABCya!

Math Games:Sudoku Variations

Wolfram Alpha: o motor de busca que responde a perguntas já está

Write and Solve a 3x3 System of Equations using Wolfram Alpha

GenerateSudokuPuzzle Wolfram Function Repository

Write and Solve a 3x3 System of Equations using Wolfram Alpha