Book excerpt: Get in on the next sudoku trend! Godoku--or sudoku word puzzles--are already beginning to appear in national newspapers. They offer an alphabetical variation on the conventional version, complete with a hidden word that’s revealed only when the puzzle’s complete. Anyone who knows sudoku will catch on quickly, because the game’s almost identical: the only difference is that instead of nine numbers, godoku has nine letters. And the grid still can be solved by logic alone. Some are straightforward, some are super-challenging, and all the words are arranged by category. A comprehensive introduction explains how these devilish new puzzles work.