Next impossible invasion I fail to kill, no dinner for a week.
Calvin If is at a, then no longer requires , but I think even with this, at a might save some trouble. Also, you might consider at b, since it is where white has the most space.
Any suggestions? Tell me if I'm abusing the BQM...
Calvin: If at , can the ko be fought? I don't know. It seems black has a and white has b, but the game is almost over and the corner is big.
Dave: At this point as Calvin points out above is a vital point. White can not make two eyes. and are miai. Whichever White chooses, Black plays the other.
Dave: Black can start with here as well.