Book excerpt: Perhaps the world's most prestigious bridge magazine, 'The Bridge World' each month features a column entitled 'Test Your Play', which consists of two difficult problems in declarer play for readers to solve. In this book, Jeff Rubens has collected some of his favourite hands from this column, and presents them as a compendium for those who like a serious intellectual challenge. There is a steady market for problem books of this kind and this collection is guaranteed to be of high quality.