My actual name is John Welch. I live in Akron, Ohio.
My blog is about humanly practical techniques for solving Sudoku puzzles.
The purpose of the first year was to develop material for a workbook, to be called Systematic Sudoku. That evolved into the current blog, in which I am linking back to advanced and extreme techniques, as I review new collections of tough puzzles and tackle well-known monsters.
The current posts freely use terms defined much earlier, so new readers really need to start with home pages and early posts. The beginners page and early posts are very useful for those new to Sudoku solving. More experienced new readers will gain quick insight into the blog from the Order of Battle page. Even advanced new readers will need to scan through earlier posts to pick up procedures and jargon for reading current posts. This is because of the many variations in Sudoku terminology and solving systems. Serious readers will need the reference pages on Sysudoku Speak and The Sysudoku Traces.