I’m the only square in the world. Yes I know. I’m the only square in the world. Have no fear Octoblock is here. I’ll show you. One, two three. Three blocks in my first row. One, two three.

A Sudoku is a puzzle involving a 9x9 grid into ... For example, if the central square is the number '9', then with this number removed both sets would still contain the numbers one through eight ...