Tag Archives: Gary McGuire

Good at Sudoku? Here’s some you’ll never complete

Last month, a team led by Gary McGuire from University College Dublin in Ireland made an announcement: they had proven you can’t have a solvable Sudoku puzzle with less than 17 numbers already filled in. Unlike most mathematical announcements, this was quickly picked up by the popular scientific media. Within a few days, the new […] … learn more→