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Twisted four in the corner
Path: LifeAndDeath · Prev: BentFourInTheCorner · Next: RectangularSixInTheCorner
Keywords: Life & Death
A twisted four which occurs in the corner may not be quite the same as the normal twisted four. The twisted four in the corner follows exactly the same logic as bent four in the corner.
1. Fewer than two outside liberties
If there are fewer than two outside liberties, White can turn this position into a ko.
White 3 starts the ko. White can finish the ko by filling at 2. At least two outside liberties
If there are at least two outside liberties, Black is alive with three points.
Thanks to the two 3. Endgame implications
When White reduces the outside liberties with
Side note: 4. Corner Non-Twisted FourThe following is a Twisted Four and is in the corner but is not an example of what is meant by Twisted Four in the Corner. It is alive - a and b are miai:
See also: Authors Path: LifeAndDeath · Prev: BentFourInTheCorner · Next: RectangularSixInTheCorner This is a copy of the living page "Twisted four in the corner" at Sensei's Library. ![]() |