This explains so much!
“Wait a minute…” muttered Greg. “Why, you sneaky so-and-so!”
“What?” said Brigid, from across the room.
“I got it! I got it!” Greg said, brandishing a newspaper at her. “See, it’s not just down and across. Each of these smaller boxes also go from one to nine! That makes it much easier. You don’t have to keep track of the whole puzzle all at once, just each one of these!”
Brigid blinked at the half-finished sudoku puzzle Greg was enthusing over. “Congratulations,” she said. “You’ve mastered a rudimentary concept known to a bazillion retirees worldwide. Maybe you’d like to walk up to McDonalds for some coffee and a rousing game of checkers.”
“Fine,” said Greg, turning his back to her. “Just for that, I’m not going to tell you the answer to today’s Super-Scramble.”