Sudoku Solution Validator,Sudoku Background Sudoku is a game played on a 9x9 grid. The goal of the game is to fill all cells of the grid with digits from 1 to 9, so that each colum...

Trivia Kata: A Refactoring Story,Refactoring a legacy code can be a tricky business. More often than not, the code is not tested, unclear and contains some bugs. If not planned, th...