I subscribe to the Sudoku Grand Masters magazine and have done for several years, the magazine comes promptly every month, non delivery has happened for whatever reason but it is very rare. I have deducted a star for a couple or reasons, firstly the facility to enter the monthly competition on line at puzzlecomp has not functioned for at least a couple of years which is a retrograde step and when I have written to Unique about it I never receive a response. Finally I would like to suggest that there should be more killer sudoku in the magazine and if the number can't increase from 120 puzzles then I would suggest 90/30 split instead of the current 104/16 split. My regards