The three-number rule, also known as the rule of thumb, is that a digit must appear three times per chute but only once per row, column and box. Remember, a chute refers to any three adjacent ...

They baffle, delight, and frustrate millions of people around the world on a daily basis. But even the most dedicated Sudoku-solver might have never spotted this secret pattern. Mathematicians have ...

While the world of logic puzzles is vast, finding your niche can make you a stronger solver. By Isaac Aronow The rich and complex philosophical concept of logic is the engine that drives an ...

All the Latest Game Footage and Images from Sudoku Candy Witch Sudoku has changed! Take the challenge and learn how to solve all new types of Sudoku patterns! Sudoku Candy Witch blends classic Sudoku ...