I wanted to do a mash-up of Crossword and Sudoku Puzzles. Here is my contribution. It takes a while to think of interesting, non-obvious clues. Alas, these clues will probably have to suffice for all future mash-ups like this. There are just not so many synonyms for the first 9 digits! I tried not to do Fill-in clues, to minimize space. This crossword can be considered a diagramless puzzle, except the starting clues, once entered, are superceded by Sudoku logic.