Book excerpt: Chess enthusiasts can sit down with 20 of the world's top players to answer the question posed by this instructive and amusing guide. Grandmaster Daniel King based How Good is Your Chess? on his popular Chess Monthly column. His easy-to-follow, test-yourself guide asks readers to predict their opponent's moves; points are awarded (or deducted) according to the readers' degree of success. In addition to helping players to judge their standard of play, it presents opportunities for improvement by providing a look at complete games and the chance to work out and study the plans and ideas of the experts. Algebraic notation used throughout