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7/10 <br> | 7/10 <br> | ||
6/6 <br> | 6/6 <br> | ||
'''FRIDAY 23 JULY 1971''' | '''FRIDAY 23 JULY 1971''' <br> | ||
204th day - 161 days to come | 204th day - 161 days to come | ||
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will be too complicated for the layman. He couldn't understand <br> | will be too complicated for the layman. He couldn't understand <br> | ||
a lot of what they were explaining to him. <br> | a lot of what they were explaining to him. <br> | ||
<u>Conway</u> is working on a | <u>Conway</u> is working on a game called <u>HACKENBUSH</u>. A figure is <br> | ||
drawn in pencil, similar to one shown. | |||
[Diagram of a humanoid doll figure constructed mostly of connected loops. "A" is pointed towards neck. "B" is pointed towards left side of torso. "C" is pointed toward the right side of torso.] | |||
Players in turn erase one line or loop between nodes. When an <br> | |||
upper area is completely isolated it "falls" and is <br> | |||
eliminated. Thus erasing "A" caused the 6 parts <br> | |||
above to "fall". Erasing "B" does not cause a "fall" <br> | |||
since "C" is still considered to hold the figure. <br> | |||
Two play as in <u>NIM</u>. (This can be transformed <br> | |||
into a "free" and then can be completely analyzed <br> | |||
by binary notation.) <br> | |||
[Illegible crossed out.] Martin used some of Conway's material <br> | |||
in writing the booklet on <u>THE TOWER GAME</u> for <br> | |||
<u>Frank Armbruster</u>. He sent $50 to Conway from the <br> | |||
fee Frank sent him, but Conway refused to accept it. He was <br> | |||
happy to have Martin use the material. <br> | |||
<u>Elwyn Berlekamp</u>, of Bell Telephone Labs but <br> | |||
moving to Berkely has been working with <br> | |||
<u>BOXES</u>. He finds the 4 x 4 dot field as <br> | |||
shown the smallest of interest. He uses <br> | |||
the equivelent form shown to the right <br> | |||
[Diagram of a 4 x 4 dot field next to a 4 x 4 box grid.] | |||
(cont. on 7/16) |