Sub-page of Buitenland

Life and Death

  1. Unsettled Three
  2. Six Die, Eight Live
  3. Four- And Five-Space Eyes
  4. Rabbity Six
  5. One-Space Notchers
  6. Shortage Of Liberties
  7. Two-Space Notchers
  8. An Eye In The Interior
  9. Three-Space Notchers
  10. False Eyes and Placement Techniques
  11. The Door Group is dead
  12. Incomplete Shapes

Study Notes

In The Beginning / Study Notes

Life and Death Study notes

When a group's eye shape consists of a line, of unoccupied spaces, three is the critical length.

Six stones in a row on the 2nd line die, but eight stones on a row live.
In the corner four die and six live.

  • 3. Four- And Five-Space Eyes

Eye shapes of four or more spaces in a row are alive.
But when spaces are not in a row, the shape may be unsettled or dead.
Some shapes: Straight four, Bent four, Bent four in the corner, Twisted four, Squared four, Pyramid four, Crossed Five and Bulky Five. (ref EyeShape )

Of the six-point big eyes, only the rabbity 6 and rectangular 6 in the corner can be killed.
Shapes of seven spaces or more are always alive.

One-space notchers are groups that consist of a chain on the second line, interrupted by a notch of one empty space on the second line and one stone on the third.
The rule for one space notchers is: "Four die, Seven live".
In the corner, five live.

The rule for two space notchers is "Five die, Seven live" or "Six is unsettled".

The rule for a three space notcher is either "Four die, Six live" or "Five is unsettled".

The door group  

The door group with one extra leg is unsettled.

  • 12. Incomplete Shapes


See also


buitenland/books last edited by Buitenland on April 27, 2009 - 12:58
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