2014-01-22 Hexadecimal Sudoku

In honour of hard working IT professionals everywhere, today we have a hexadecimal sudoku.  Exactly the same as a normal sudoku but with the numbers 0-9 AND the letters A-F giving 16 values to fit into a 4x4 grid.   Have fun and be nice you all your IT staff today if you're in the office!

2014-01-21 Codeword

A return - hopefully I wont leave it so long until the next update.