Best move for this pattern, in Go
Four stones is an enormous handicap on a 9x9 board. With perfect play by Black, White probably can't make a living group. If you're taking four stones, you presumably aren't going to play perfectly. The main thing to do here is stay out of trouble. Connecting below 5 is a nice solid move. Playing to capture the two stones is fine, too. As long as you keep one of the upper corners alive after that, there's no way for White to win. White has to play very unreasonable moves in a situation like this, so thinking too much about them won't teach you much.