Comments Back Online

My ISP tells me it’s been more than 24 hours since the last spam from my account. They think (knock on wood) that the problem has been fixed. So you can once again submit comments and you shouldn’t get taken to a nasty-looking “Forbidden” page....

Spam woes continue

I’ve been told that the spam coming from my account started up again, and so my Internet service provider has once again been forced to block comments on my blog. The blog does appear to be the source of the problem, because the spam stops when they put up the...

Comments Working Again

There was a period of about 24 hours when comments were disabled on my blog. What happened is that somebody figured out a way to send out spam that appeared to be from my blog. To get to the root of the problem the comments had to be disabled for a while. The problem...

Easy card game, hard math problem

Today the New York Times Numberplay blog features a card game that I co-invented, along with a mathematical problem: What is the best strategy? Here are the rules for “Stern-Mackenzie One-Round War.” The game requires three people, one of whom serves only...

The cheating coach redux

A few of you might remember a post I wrote last year about a really cool math problem that a friend sent to me. For those who don’t remember, here it is again: Two chess teams are going to play a chess match. The best players on each team are supposed to play on...