This blog deals with grid-based puzzles and the various types of logic and ideas used to solve them. It also contains notices, information and results about various puzzle and sudoku championships across the globe.
Puzzle No.137
This is a Missing Sudoku from the Japanese Sudoku Championship - 2007.
How long did you take to solve it?
ReplyDeletePost your timings here.
I solved it in 18m 27s.
ReplyDeleteThis is soo tough! No wonder it had a lot of points...