In Sudoku, pattern recognition is key to eliminating possibilities and determining the right number for each square. Playing ...

all of which remove the most frustrating aspects of the game. Good Sudoku uses a dedicated onscreen number pad for filling out puzzles, a note-taking system, and hints to help you learn increasingly ...

But what role does math play in solving complex problems ... the second step in the modeling process is to solve the problem.

Swap numbers for sports balls in this sudoku-style puzzle. Keep each row, column, and section unique. Think you’ve got the strategy to win?