Not quite, but similar in some spots. It's a 5-in-a-row coupled with Capture 2 - if you can bracket 2 opponent's stones between 2 of yours they are captured, so you can block OR capture to stop the opponent's 5. And you have to watch for capture vulnerability while trying to make your 5. One of those easy-to-learn-hard-to-master things. It is now what I play instead of hearts while waiting for things to happen over the modem to work...