What's great about this is that it allows you to develop arguments that would, if written down, be proofs that were several lines long, without having to hold a lot in your head. Things like, "If I put a 2 ... 5/
What's also great is that it turns ... 6/
The interesting thing wasn't that, however. It was that we decided it would be more fun to collaborate again, and, just as is so often the case in serious mathematical research, we were far more efficient as a team than as individuals. 11/
Did I mention that we probably spent about three hours on it, all told? 13/
Here's puzzle 2. 14/14
cracking-the-cryptic.web.app/sudoku/897Lqtf…