It’s all very well being hooked on Sudoku, but when do we have time to do these addictive puzzles in our busy lives? When are we sitting down alone, with our hands free and nothing too taxing to do with our brains? You can see where we’re going with this. If you’re tired of leafing through cartoon books you’ve read a hundred times, but would like something to while away the time while you sit contemplating the back of the loo door, then Sudoku Loo Roll is quite possibly the answer.