Sudoku Tips for Beginners: How to Solve Efficiently Get started solving the classic number puzzle with tips from some of the best solvers in the world. Share full article Katherine Lee/The New ...

The cube The Bluetooth-enabled GoCube 2x2 is a pared-down version of the traditional 3x3 puzzle cubes most of us are used to. As a result, it's a bit smaller and simpler to solve.