Wow

I just played a game of Go. I won't say the opponent's name because I'm about to say some terrible stuff. The guy had me. He just had me. He pressed me in a corner and took it. He forced territory I thought into seki. When we got to a point where I thought we should pass and end it he would have won by 7.5 points. Instead he got greedy. He tried to capture the stones in seki. He tried to take another secure corner and then another. I went from capturing three stones to capturing 17 plus a few more that were dead. When he finally passed I won by half a stone. He then started to play again and made another move. I answered he passed. We counted. The score was the same. He started it back up again. He moved, I countered. He passed, I passed. I was again up by half a stone. Finally he quit.

OK, here's the lessons for the day:

When you play Go, don't get greedy. Aggression is one thing. Aggression is good. Trying to capture a group of stones in seki is just plain stupid. And greedy. Had he not done this and the rest of the game had gone the same way, he would have won.

Lesson two. Have some courtesy. Don't ask for undos in rated games. Also, when you pass and your opponent passes, don't start it back up because you're losing. Perhaps there is an argument to firm up a section of boundary but really you should do that prior to passing. In Go, etiquette matters.