Difference Sudoku
When I first looked at the difference Sudoku, I recognised that there was a few boxes where there was only one possible answer ( the ones with an eight difference); you just didn’t know which way round the numbers went. I found all of them, and experimented with them until I thought they were mostly right. I then worked on the bottom two lines as it gave you the most information for those two lines. I worked out the possible pairs and got those two lines with the numbers 1-9 in it only once. Once I finished those two lines, I worked on the second and third rows to the top. Once filling all of them in, so it worked horizontally and vertically, I decided to try and finish the top row (to complete the top three boxes). That really helped me and allowed me to try and complete the rest of the difference Sudoku. Once I was finished, I looked back at my work and spotted one mistake; however, that could be easily fixed as all I had to do was switch two numbers round at the top, and switch two numbers round in the middle. I checked it, and didn’t find any more mistakes.