Net example 6
This is a reading problem based on a net theme. What should happen after ? The point is to do the calculations mentally. White shouldn't be trapped; but how best to escape?(Position taken from New Year's Rengo 2002 B45 variation.)
The first decision is how to answer Black 1. If with White 2 here, up to 7 in this diagram is expected. Now White must escape from the net, either with White 8 as shown, or with White 8 at a.
Now White 2 here really is forced. Black 3 appears to be quite strong. Black is making good use of the five marked stones.
If White breaks out the other way, Black's shape is worse. But this leaves Black one interesting option.
Obviously White cannot play 2 here, losing the stones in a ladder after Black 3.
Therefore White 2 seems best for White to escape. After White 6 there is still some shortage of liberties for the white group; so White must still be careful.