# Lines of Stones [#1718]

75.53.165.213: Lines of Stones (2009-01-19 17:03) [#5678]

Sorry

HermanHiddema: ((no subject)) (2009-01-19 17:10) [#5679]
something like this

pushing

In general, ---etc is not a good idea, because black is pushing from behind. If you keep it up like that, white is constantly ahead of you, and may chose to bend around (hane) on the front of your stones (eg: at a instead).

jumping

Usually, something like is better, jumping ahead. Now and are pushing from behind, and maybe black will hane in front.

jump, cut

The risk of , however, is that white will cut like this. Whether this is possible depends on the surroundings (eg: is the edge of the board nearby?)

knight's move

If you think that the cut is too dangerous, instead of the first jump, you can play this knight's move jump of . Now - might follow. This is better than pushing from behind.

knight's move

Even with the knight's move, white can still cut. But this cut is much weaker than the previous one. In the previous cut diagram, and and - were separated in three groups. Here and are connected, so black only has two groups to worry about (- and -).

If even this cut is too much for your position, then you are truly in a weak situation, and perhaps there is nothing for it but to push from behind (sometimes bad moves are your only option).

AndyPierce: few more comments (2009-01-20 04:39) [#5680]

It is useful to know how much pushing from behind you need to do.

push once

is a Hane at the Head of Two Stones and is severe. If black is weak in this area, he will have difficulty answering due to being short of liberties.

push twice

Now there's an extra liberty for . This gives black many more options, including the possibility of a ladder starting with , and several other potentially useful forcing moves. Often, this level of pushing is sufficient to give black a variety of playable continuations, including the option to consider the -- stones light and sacrifice them if white is locally strong.

push three times

Now black's connection is locally secure, because can be captured in a net, starting with a and then b. In general, this is overkill, and black will have given up too much to the line of white stones underneath. By adding a 4th stone to , all these black stones become heavy and start to restrict black's options.

don't do this

More fundamentally, if black doesn't want to get into this kind of mess, he shouldn't attach to the white stone like this.

shoulder hit

The shoulder hit of is very often better for black. Now if white continues locally at either a or b, it is white that is pushing from behind, rather than black.