Classic Sudoku this week. Writing a good classic is a very much under appreciated art - it's much easier to do a variant most of the time. This one is OK but there's still plenty of room for improvement!
#317 Sudoku – rated medium![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYrdcgUReYB-Z1qlSfFH6rOgAU-TSbxBIHoCU6mgh3t7wAuIc5pg_Tsa-JTsMxSP9-r1HXG66X0LivwZiuhFBVYN6sxqRhwYpYum1lsTIDxQWK0ZPFSrlHw78EP8KORw4cI7o-1RI5KBe5/s320/317su.png)
All puzzles © Tom Collyer 2009-15.