A Quickie

When I give chess lessons at the Aptos Public Library, it’s always a challenge to make them concise enough. For this age group (roughly 6 to 12) I have found that 15 minutes is about the limit of their attention span, or 20 minutes if the lesson is going well....

Amazing finish

Hello! I’m back again from my trip to Washington, DC, for the math meeting. It was two weeks before Barack Obama’s inauguration, and the stores were already full of touristy souvenirs, so that one could pretend to have been present at this historic...