monster sudoku (060218)

monster sudoku (060218)

Once again the weekend is upon us, so it is time for a monster 16 x 16 sudoku. Today's sudoku is one of the hardest ones I have posted on this site; this is the very first time I managed to make a monster sudoku with less than 108 cells filled (this one has 104) yet still generate a unique solution. Let's get right to it.

The rules of Monster Sudoku: The puzzle board consists of a 16 by 16 grid, which is further divided up into sixteen 4 by 4 blocks. In each row, column, and 4x4 block, the letters A through P each get written exactly once. There is only one solution. If the letters are a little too small for you, click on the image to bring up a large version. For those who need help, a short tutorial on how to solve sudoku puzzles can be found here.

To solve this puzzle, I suggest first saving the GIF on your computer. Then print it out (or copy it out on graph paper) and solve it in pencil (or in pen if you're feeling bold). If you don't feel like using paper, then solve it using a graphics editor such as Microsoft Paint.

If you solve this puzzle, post your solution in the comments. The first person who posts the correct solution wins a prize: a permalink on my blogroll and a graphic declaring him or her to be the Monster Sudoku Champion, which can be displayed on their own blog. I will post the solution next Saturday if nobody else gets it by then.

Update: the solution is here.

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