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

Граф судоку — Википедия

Vector Calculus – BetterExplained

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

Sudoku and Doing Your Best Work. A lot of our lives, both our

What Google and MathWorld offer.

Parallel Depth-First Sudoku Solver Algorithm

Word Sudoku by POWGI

Wolfram, Alpha S_LV_S Crossword Puzzles—Wolfram

Columbia Undergraduate Science Journal

Word Sudoku by POWGI

The World Needs More Sudoku Book Puzzle Pad