# Discussion

Q: Is this something different from a net?

--Stefan

BillSpight: Interesting question. :-) I suppose you could consider it a kind of net, but it's more specific.

Net

is a net, but not a loose ladder.

Why would you bother, instead of simply capturing and removing bad aji

The way I see it, is that a ladder is a capturing technique where the liberties of the chased chain flip between one and two until the defending side is unable to raise the liberties to two again.

A loose ladder would follow exactly the same definition, replacing 1 by 2 and 2 by 3 respectively.

A net on the other hand is a capturing technique so that the liberties of the chased chain can't be increased by the defender's next move.

geta 1
geta 2

Both basic examples of net meet my definition.

jvt: Your definition is too restrictive. (Example moved to Net example 7.)

(Well if it is a ladder it is not a net!)

jvt: A successful loose ladder always ends in a ladder (in order to decrease the liberty count from three to zero, you have to go through a stage of 1/2 liberties.

Bill: One thing that a loose ladder and a ladder share, that a net does not, is that they each reduce the liberties of the chain of stones to be captured by one with each play. In a ladder each play is atari. The typical play in a loose ladder is not.

tapir: Dieter offered a good definition. But it is quite telling that we are not even sure about what a ladder and what a net is: the most basic techniques of all.

Loose Ladder / Discussion last edited by tapir on December 4, 2011 - 17:49