DJ Ape .Net – The Home of Perfect Sudoku

For those who don’t get enough challenge from Killer Samurai Sudoku nor from Harakiri nor from Twin Killer nor from any other overlapping, odd/even, consecutive or greater/less than sudoku – here is the ultimate challenge – my second ever Clueless Killer Sudoku.

If your friends or family call you names when they see you solving this puzzle – please do not complain to me. In fact, I suggest that you just download this puzzle, have a look, but don’t attempt to solve it.

Again, thanks to Ruud from www.sudocue.net for inventing the “clueless” concept.

In this puzzle, there are 9 Sudoku puzzles with no overlapping regions! If you attempt to solve them individually – you won’t get far.

Here is where the “clueless” part comes in: in all of those 9 puzzles, the center nonet is just one cage. As you plug in your numbers, center nonets (shaded in grey) start filling up. The trick is that those 9 center nonets, put together, also constitute a valid Sudoku puzzle. So, when you run out of ideas, start working on the 10th puzzle and it will give you enough information to solve the whole lot. Those 10 puzzles together have, of course, a single solution.

Clueless Killer Sudoku for Monday, May 15 – this is the only place you can find these kind of Sudoku puzzles!

Download the puzzle by clicking on this thumbnail:

solution – final