The Big Sudoku

Samurai and 16 x 16 'Super' Sudokus. For those that want a puzzle that lasts more than a few minutes.The puzzles come in three levels of difficulty, none of them are trivial or easy. These are puzzles that will take a bit of time to solve. And if you complete one you will have solved it. There are no cheats or hints to allow you to carry on if you get stuck.There are aids to help with some of the legwork though, the puzzles will auto fill and update pencil marks showing all of the possible numbers available in each square and you can highlight all squares that can hold a possible number allowing patterns to be seen. But, there is nothing in the puzzle to shortcut the mental process required to complete it.Also for traditionalists or the masochistic you can email a puzzle to your computer to be printed out and solved the hard way with no highlighting assistance using a pen and paper.Because of the size of the puzzles this app will work best on a tablet or large screen phone. However, the grid can be zoomed so play on almost any device should be possible with a pit of patience.