Eugene's Sudoku Puzzle #44

Greetings and salutations! Are you ready for another round of combinatorial confusion?

Complete the grid so that each row, column and three-by-three box contains the letters LIGHTNEWS. (That means you can't have any repeated letters in a line or box.)

Once you have the solution, read the shaded boxes to find out which Christmas carol was composed by Joseph Moor. Click on the puzzle to access the answer.

Eugene's Sudoku -- Dec '12

 

© Puzzle courtesy of Joe Defries. Illustration © Gary Locke.