BSR 2003 W108 discussion
Charles Matthews When Black played in the game, a difficult position was created. The exchange / on the upper side was good for Black: was supposed to make the hane-connection here White's sente, but there is great danger now that it will be double sente instead.
White should certainly consider playing this way. threatens to cut, and prevents Black rescuing the two stones.
Black at a certainly now has an effect, but White at b is dangerous too. From a mutual damage point of view White should probably accept this.
Dave: How about this instead?
Charles I suppose might be better in the way of follow-up - it's not a classic shape. If then immediately can't be right because of . (Black can't get anything pushing along to the left?)
Dave: Even more interesting?
Dave: Can Black play like this? In the upper right he can exchange a for b before all the rest if that is necessary.
Charles Maybe White is going down in flames anyway in this game. But if this leads to White resigning, it might almost be worth it?
Dave: I think Black must play first. If it looks like may work. Against , Black has ? There are a lot of tricky looking variations here, including the aji of White a...
Dave I think that Black can win by filling a liberty with .
Charles Not sure we ever reach the end of the debate. But with of the previous diagram replaced by here, would revert to the previous kind of capturing race? Anything else and White has two half-eyes? Well, no, at a I suppose. See next.
Dave: Charles, I cheated you and swapped and in the previous diagram while you were thinking! Sorry about that but you are right about White winning here I think.
Credible? is on principle, seems to win. at fails too. Actually this may not be quite right either.
Well, the real game may peter out instead of such fireworks.
Dave So going back to here if White moves to here Black has to try because giving way will lose after as shown above. But after the exchange of for the aji of comes into play!