For nearly half a century Leonard Barden has delighted readers of his newspaper columns with his chess puzzles, taken from both the world of chess composition and practical play. Here he presents the best of these -- 300 brain-teasers designed for all levels of player and classified under such themes as Novice corner, Knockouts in one, Checkmates in two, Practical opening traps, Learn from the champions, Spot the blunder, Strategic chess, Endgame...