The Random House $10,000 Crossword Challenge is America's first crossword book with a big-money prize: $10,000 in cash to be awarded to the winner. You'll match wits with editor Stanley Newman and America's most talented puzzlemakers, like Wayne Robert Williams, Randolph Ross, and the inimitable Henry Hook. Each of the first 49 puzzles conceals two letters of a hidden message, which relates to the solution of puzzle number 50. Solve the crosswords, find the hidden message, then follow the instructions in the Official Rules that appear inside the book, and you're on your way to winning...