Nurikabe and Sudoku

Book excerpt: Widely regarded as the world s most prolific wellspring of logic games and brainteasers ... if anyone comes up with the next craze, it will be Nikoli "The New York Times"Just a few simple rules lead to an endless variety of fascinating logical possibilities with nurikabe. Shade the grid so that it contains a connected river of black squares. Each number in the grid is part of a different island, and the number indicates how many white squares that island contains. Also, no 2-by-2 square in the grid may be colored entirely black."