4-4 point low approach, attachment, wedge, low atari
subpage of 4-4 point low approach, attachment, wedge
Charles Matthews The important ladder occurs after and . White should expect this and use a ladder with , unless White is already strong on the left side in which case White at a may be possible.
The expected sequel is then , (because of the proverb Capture stones caught in a ladder at the earliest opportunity
White is considered better.
With here, Black prevents the ladder capture: clearly though White at a next means White can take over the corner for a big exchange.
If White isn't so flexible, and plays here anyway, a difficult crawling battle can arise after . There are some more ladder tactics available after (double threat ladder-maker).