Power Play 10 - CalculationYou play 20 moves of elegant positional chess but throw the game away by miscalculating. To play a good game of chess you must know how to calculate. The ability to calculate is not something that chessplayers are born with. Calculation is a core skill that can be improved through practice. In this 10th Power Play DVD Grandmaster Daniel King will help you to assess how good you are at calculating, and gives you tips as to how you might sharpen your