Hane connect exercise 1
Black and White have weaknesses at b and a respectively, as described on the hane tsugi/discussion page. Can White play the hane at ? What will be the outcome? Are there other options here ?
Probably Black has to give way at . If White continues here, it should be at a; however, there is a good chance that White will play tenuki now, satisfied to have avoided the black hane at b in sente. My impression is therefoer that is a rather small move, but double sente. - Andre Engels
Bill: With the usual assumptions of yose, I get to be a 6 point sente. If Black b, Black a is worth only 4 points (miai).
If White does make the next move here, she will play like this.
Bill: This is a one-point gote.
If , White will probably not answer. After , White can play at or a. Note however that is simply a ko threat: it does not make any points (in theory White could make an approach ko for one point by playing at b, but in practice this is too risky). - Andre Engels
Bill: After the temperature has dropped to 0 (unless White is komaster). If then White a. Or - , White b, then Black fills. Normally Black plays first for some ko threats.