Practical Chess puzzles - G. Song, D. Lin & E. SongPractical Chess puzzles by Guannan Song, Dachey Lin & Edward Song 600 Positions to Improve your Calculation and Judgement Chess puzzle books are undoubtedly popular and with good reason. Solving chess puzzles helps to sharpen a players tactical and combinational skills. This ability is absolutely fundamental for chess development. You wont get better at tennis until you can consistently hit the ball with accuracy and you wont get better at chess until