Last semester, one of the most popular Problems of the Week was the Sudoku problem.   Over sixty correct answers were sent in, so here is another SUDOKU Puzzle.

The rules of Sudoku are simple.   Enter digits from 1 to 9 into the blank spaces.   Every row must contain one of each digit.   So must every column, and so must every 3x3 square.   Each Sudoku has a unique solution that can be reached logically without guessing.