Lifeline Volume 9

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Lifeline Volume 9
Lifeline Volume 9
Published in March 1973
Preceded by Volume 8
Succeeded by Volume 10
This page is a transcript of Volume 9 of the Lifeline newsletter
This article may contain spelling mistakes and/or errors that will not be corrected -- it is preserved in this way for history's sake
A QUARTERLY NEWSLETTER FOR ENTHUSIASTS OF JOHN CONWAY'S GAME OF LIFE

O     OOOOO OOOOO OOOOO O     OOOOO O   O OOOOO
O       O   O     O     O       O   OO  O O    
O       O   OOO   OOO   O       O   O O O OOO  
O       O   O     O     O       O   O  OO O    
OOOOO OOOOO O     OOOOO OOOOO OOOOO O   O OOOOO

NUMBER 9
MARCH 1973
• Editor and Publisher: Robert T. Wainwright

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This issue of LIFELINE brings the newsletter back on schedule again and I am pleased to report that even more new and exiting discoveries have been made in this incredible game. We welcome the several hundred new readers who responded to Martin Gardner's recent column in Scientific American mentioning this endeavor.

As in previous issues, I will attempt to present a cross-section of the many new findings still being made and sent in.

Schick's stupendous Flying Machine
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 4.5 ]] #C [[ STARTFROM 0 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 3.5 ]] #C [[ STARTFROM 1 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 3.5 ]] #C [[ STARTFROM 2 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 2.5 ]] #C [[ STARTFROM 3 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 2.5 ]] #C [[ STARTFROM 4 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 1.5 ]] #C [[ STARTFROM 5 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 1.5 ]] #C [[ STARTFROM 6 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 0.5 ]] #C [[ STARTFROM 7 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X 0.5 ]] #C [[ STARTFROM 8 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X -0.5 ]] #C [[ STARTFROM 9 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X -0.5 ]] #C [[ STARTFROM 10 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 32 ]] #C [[ WIDTH 608 ]] #C [[ HEIGHT 416 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] #C [[ X -1.5 ]] #C [[ STARTFROM 11 ]] 4o$o3bo$o$bo2bo2b2o$6b3o$bo2bo2b2o$o$o3bo$4o!
Local Lifeclub News . . .

On February 27 th, a meeting of the Michigan State University Lifenthusiasts (and several dozen Life-neophytes) was held. Chris Scussel arranged and conducted the meeting which was held in the Engineering building on the East Lansing campus. The agenda included a brief explaination of the rules of Life given by Scussel. The heart of the meeting involved a demonstration of a 4K (16-bit word) program which runs on a standalone device (IMLAC). Developed by Bryan Drake, this program has the capability to compute and display Life on a 124 square display. The group enjoyed watching the notorious R-pentomino evolve through its history in less than five minutes on Drake's display.

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Next, the group saw a showing of the 17 minute film created at M.I.T. by Bill Gosper and thoughtfully loaned by Mike Beeler to the writer who also presented some unpublished Life discoveries and answered miscellaneous questions. Incidentally, the most frequently asked question regards the practicality and/or possible pragmatic application of Life. This is a difficult one to answer and I will publish the best responses sent in by any reader.

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 704 ]] #C [[ HEIGHT 576 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] bo$2bo$3o2$7b2o$2b2o3b2o$2b2o!

EN: when the writer left East Lansing, Dave Filpus and Kevin Karplus were still humped over the IMLAC tracking the glider-blocks collision shown here which had just passed the 1500 generation mark before exceeding Drake's area limit. By that time, ten gliders had sucessfully escaped from this original arrangement that Karplus had discovered while experimenting for only a few minutes at the input keyboard!

Class E, Evolutionaries, Exercises, Events, Et. cetera . . .
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 576 ]] #C [[ HEIGHT 640 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 16 ]] 5bo$4bo$4b3o$2o$2o$4b3o$4bo$5bo!

Previously (No.7,p.3), we examined several Lifevents involving pairs of objects which after N (say) generations, retained their identity. That conservation of structure was only temporary however because each of these objects then went on to become something else. In issue No.3, page 15, we saw an event where a beehive and a block conservatively interact on a permanent basis. This reaction is also time limited however because, as before, we must start at generation 0 with just the right arrangement. An 'ideal' conservation of structure would involve (say) a glider and an object (Class I, II, or III) which after collision would become a glider and that object either or both of which could be displaced in time and or space. The only example of this ever published was that Lifevent involving a glider striking and being reflected (180) by a pentadecathalon as reported in issue No.1, page 5. I would now like to present another Lifevent involving two gliders and a block which the writer considers an even more spectacular display of structure conservation. The arrangement shown here will, in 15 generations, be identical in structure: that is, a block (same location) and two gliders altered somewhat in space and time! Peter Raynham of Sarnia, Ontario, Canada who made this discovery notes that the two gliders can be reflected either 90° or 180°. (EN: this will be very useful in our yet to be built Life computer)

Class I, Still Lifes and Stable Forms . . .
The Ten-bit Still Lifes by Buckingham and Boyer

To avoid further confusion regarding the ten-bit still lifes, Buckingham has obligingly submitted the set of 25 shown on the next page which includes the one (m) that was not in my original list. Gosper suggested searching for even a 26th to make an alphabet of stable objects.

EN: Lee Skinner of Albuquerque, N.M. submitted a set of 43 eleven-bit stable objects which recently has been increased to 46 by Buckingham who also has identified 119 of the twelves, 210 of the thirteens, and 474 of the fourteens! A subscription to LIFELINE will be awarded to anyone submitting a set of 47 or more eleven-bit still lifes.

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#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 47 ]] #C [[ WIDTH 611 ]] #C [[ HEIGHT 705 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 0.5 0 10 "g.i" ]] 5bo$4bobo$5bo2$3b5o$2bo2bo2bo$bob2ob2obo$bobo3bobo$2obo3bob2o$o2bobobo 2bo$2bo5bo$3b5o$5bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 51 ]] #C [[ WIDTH 867 ]] #C [[ HEIGHT 765 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 0.5 0 10 "g.ii" ]] 7bo$7b3o$10bo$5b3o2bo2b2o$4bobobobobobo$4bo3bobobo$b2obobobobob2o$2bob obo3bo$obobobobobo$2o2bo2b3o$4bo$5b3o$7bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 48 ]] #C [[ WIDTH 672 ]] #C [[ HEIGHT 864 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 0.75 0 10 "g.iii" ]] 5bo$4bobo$4bobo$2ob2ob2ob2o$o4bo4bo$b3o3b3o$3bobobo3$4bobobo$2b3o3b3o$ bo4bo4bo$b2ob2ob2ob2o$5bobo$5bobo$6bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 47 ]] #C [[ WIDTH 611 ]] #C [[ HEIGHT 893 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 0.75 0 10 "g.iv" ]] 5bo$4bobo$bo2b2o$b3o$5b3o$3b2o3bo$2bo4bo2bo$bobobobob2o$bobo3bobo$2obo bobobo$o2bo4bo$2bo3b2o$3b3o$7b3o$5b2o2bo$4bobo$5bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 47 ]] #C [[ WIDTH 611 ]] #C [[ HEIGHT 658 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 0.5 0 10 "g.v" ]] 5bo$4bobo$4b2o$2b2o$bo3b3o$o2b2o3bobo$b2o4bob2o$3bobobo$3bo3bo$4b3o$6b obo$7b2o!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 1200 ]] #C [[ HEIGHT 1200 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ GRIDMAJOR 10 ]] #C [[ X 1 ]] #C [[ LABEL 1 1 8 "a" ]] #C [[ LABEL 11 1 8 "b" ]] #C [[ LABEL 21 1 8 "c" ]] #C [[ LABEL 31 1 8 "d" ]] #C [[ LABEL 41 1 8 "e" ]] #C [[ LABEL 1 11 8 "f" ]] #C [[ LABEL 11 11 8 "g" ]] #C [[ LABEL 21 11 8 "h" ]] #C [[ LABEL 31 11 8 "i" ]] #C [[ LABEL 41 11 8 "j" ]] #C [[ LABEL 1 21 8 "k" ]] #C [[ LABEL 11 21 8 "l" ]] #C [[ LABEL 21 21 8 "m" ]] #C [[ LABEL 31 21 8 "n" ]] #C [[ LABEL 41 21 8 "o" ]] #C [[ LABEL 1 31 8 "p" ]] #C [[ LABEL 11 31 8 "q" ]] #C [[ LABEL 21 31 8 "r" ]] #C [[ LABEL 31 31 8 "s" ]] #C [[ LABEL 41 31 8 "t" ]] #C [[ LABEL 1 41 8 "u" ]] #C [[ LABEL 11 41 8 "v" ]] #C [[ LABEL 21 41 8 "w" ]] #C [[ LABEL 31 41 8 "x" ]] #C [[ LABEL 41 41 8 "y" ]] 2$6bo9b2o7bo20bo$5bobo7bobo6bobo8b2o8bobo$4bobo7bobo6bobobo6bo2bo6bobo $3bobo7bobo7bo2bo7bobo6bobo$2bobo8b2o9b2o7b2ob2o5bo$3bo38b2o5$5bo9b2o$ 4bobo7bo2bo14b2o8b2o$3bobobo5bob2o5b2ob2obo3bo2b2obo3bo2b2o$3bo2bo6bo 8bob2ob2o5b2ob2o5b2o2bo$2b2o8b2o33b2o5$2b2o$2bobo6b2o13b2o8b2o$5bo5bob o11bobo8bo7bo$6bo7bo10bo8bobo6bobo$7bo7bo6b2obo7bobo7bo2bobo$8bo7bobo 3bobo8bo8b2o3b2o$7b2o8b2o13b2o5$4bo7b2o12b2o17b2o$3bobo6bobo9bo2bo8b2o 7bobo$3bo2bo7bo8bob2o6b2o2bo9bo$2b2o3bo6bobo6bo8bo2b2o9bo$6b2o7bobo4b 2o8b2o9bobo$16bo26b2o4$4b2o8bo$4bobo6bobo9b2o9bo8b2o$6bo7bobo7bobo8bob o7b2o$5bo10bo6bobo9b2o$4bo10bo7bo9b2o8b4o$3bo10bo9bo7bobo8bo2bo$3b2o9b 2o7b2o8bo!

Class II, Oscillators . . .

The cover page of LIFELINE Number Eight illustrated a set of oscillators with periods of 9, 2, 3, 8, 7, 4, 5(*), and 6 (a thru h respectively)! (g) was meant to be a period five oscillator but will not work as shown. This was first pointed out by Gosper and later by Buckingham who more recently submitted (g.v) shown to the right which will work with a period of five. Again, to insure appropriate credit and authorship, I will now indicate the specific constructor and exact name as coined by same.

Object Name Period Constructor
(a) 'snacker' 9 Niemiec
(b) 'revolver' 2 Niemiec
(c) 'diamond ring' 3 Buckingham
(d) 'pyrotechneczum' 8 Buckingham
(e) 'airforce' 7 Buckingham
(f) 'penny lane' 4 Buckingham
(g) 'technician concept'  5* Buckingham
(h) 'sombreros' 6 Buckingham
(g.i) 'aVerage' 5 Buckingham
(g.ii) 'chemist' 5 Buckingham
(g.iii) 'siesta' 5 Buckingham
(g.iv) 'pedestle' 5 Buckingham
(g.v) 'technician finished
 product'
5 Buckingham

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Extracts from the Editor's Notebook . . .

There are 104 unique arrangements (excluding rotations and reflections) of bits within a square nine-cell matrix. Can you track all of these?

Lifeline vol09 fig 04 01.png

EN: these are presented here with row and column identification for reference in future issues.

The last page of LIFELINE Number Five presented the first LIFESAVER Form which included a questionnaire about organizing for local Life activities. Here is a summary of the questions and responses from those 262 readers who bothered to reply:

  • Does the idea of forming a local group in your area for participation in Life activities appeal to you?
No
Maybe
Yes
23%
42%
35%
  • Could or would you be able to offer a good computing facility to a local group?
No
Maybe
Yes
63%
28%
9%
  • Does the idea of acting as a LIFELINE associate editor for such a group or contributing to one appeal to you?
No
Maybe
Yes‑contr.
Yes‑assoc.
34%
34%
24%
9%
  • Would you be interested in contacting others in your area and starting a group if provided with an address list of readers near you?
No
Maybe
Yes
41%
32%
27%

Additionally, I polled the reader base to determine the extent to which any individual would, within his own reason, be willing to pay for a 'custom built computer' which would display Life on an ordinary TV set. Here is a summary of those responses:

Nothing $20 $50 $100 $200 $500 $1000 Not certain Total
18 49 66 51 29 5 1 43 262

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Class IV, Propagators, Puffers . . .

The configuration shown on the cover page of LIFELINE Number Nine is the surprisingly simple but potentially prolific puffer train assembly which was discovered and submitted by Paul Schick of Madison, Wi.

Schick found that by placing a mere T-tetromino No.8,p.5) between a mirror pair of tightly packed lightweight spaceships, he was able to 'pull' the elegantly symmetric clean engine along with a period of 12!! By placing additional combinations of one or more spaceships alongside and slightly behind this arrangement, he was able to construct an endless variety of puffer trains with periods of a multiple of 12!

A few of these are shown here to the right. Arrangement I deposits a block every 12 generations, Arrangement II creates twin toads every 24 generations, and Arrangement III generates a rearward glider every 24 generations.

The BREEDER (No.3,p.7) lays down a Gun every 64 generations. These are spaced 32 cells apart. It is possible to pack them as close as 24 cells apart. Do you suppose we could construct a period 48 NEWBREEDER???

Arrangement I

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 960 ]] #C [[ HEIGHT 528 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ ZOOM 8 ]] #C [[ X 1 ]] 9b6o$9bo5bo$9bo$10bo4bo$12b2o$b2o14b2o$2ob2o11bo2bo$b4o3bo8b2o$2b2o3bo bo2b2o$6bo3b2o2bo5b2o4b2o4b2o$2b2o3bobo2b2o6b2o4b2o4b2o$b4o3bo3b2o$2ob 2o$b2o2$9b6o$9bo5bo$9bo$10bo4bo$12b2o!

Arrangement II

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 960 ]] #C [[ HEIGHT 504 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ ZOOM 8 ]] #C [[ X 0 ]] #C Note that the spacing between the toad pairs is incorrect. #C This mistake is preserved from the original document. 9b6o$9bo5bo$9bo$10bo4bo$bo2bo7b2o$o23bo12bo$o3bo7bo9bo2bo9bo2bo$4o4bo 3b3o7bo2bo9bo2bo$6b2o5b2o8bo12bo$6b3o6bo$6b2o5b2o8bo12bo$4o4bo3b3o7bo 2bo9bo2bo$o3bo7bo9bo2bo9bo2bo$o23bo12bo$bo2bo7b2o$10bo4bo$9bo$9bo5bo$ 9b6o!

Arrangement III

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 960 ]] #C [[ HEIGHT 504 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ ZOOM 8 ]] 14b4o$13b6o$12b2ob4o17bo$13b2o21b2o$35bobo$4o$o3bo$o$bo2bo2b2o9bo$6b3o 9b2o$bo2bo2b2o8bobo$o$o3bo$4o$15b2o$13bo4bo$12bo$12bo5bo$12b6o!


IMMIGRATION, Alliances, and so forth . . .

Both Raynham and P. Burton of Preston, England report that a glider will interact with a toad and result in an allied glider if they initially had different states. This is shown here. Recall that in this three state variation births are governed by the majority state.

EN: interesting grist for a sci-fi scenerio regarding intergalatic civilizations.

Gen:0

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 576 ]] #C [[ HEIGHT 512 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ COLOR 0 White ]] #C [[ COLOR 1 Black ]] #C [[ COLOR 2 Darkgray ]] x = 7, y = 6, rule = immigration .2A$A$3.A$.2A2.2B$4.2B$6.B!

Gen:6

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 576 ]] #C [[ HEIGHT 512 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ COLOR 0 White ]] #C [[ COLOR 1 Black ]] #C [[ COLOR 2 Darkgray ]] #C [[ STARTFROM 6 ]] #C [[ X 0.5 ]] #C Note that the original image in lifeline crops out the dying #C dot spark. It is included here because the viewer thumbnail #C cannot be made smaller. x = 7, y = 6, rule = immigration .2A$A$3.A$.2A2.2B$4.2B$6.B!

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Ratios, Quotients, Factors, and Miscellaneous Measures . . .
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 640 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 12 ]] 3o$o2bo$o2bobo!

V. Everett Boyer of San Diego, Ca. previously (No.8,p.5) defined the procrastination quotient as the ratio of age to the product of the initial and final populations. By this measure, a procrastinator is an object whose PQP is large but finite. Unfortunately, this does not apply to patterns like the 'diehard' shown here (also see No.2,p.13) because the final census is total extinction which therefore gives an infinite measure of PQP. (EN: the diehard PQP = 118/8x0 = inf.). To get around this problem, Gosper has suggested another related measure which is equal to the age divided by the sum of the initial and final populations. This ratio is somewhat more comprehensive since it credits long age as well as minimum (even zero) final population for patterns that procrastinate. It does not, however, properly credit small initial patterns. Note that the diehard has a PQS = 118/8+0 = 14.750 which now tops the structurally similar object reported last issue with a PQS = 189/8+6 = 13.500.

EN: can you identify the special set of objects of size = n whose PQS is maximum for n = 3, 4, 5, ... ?

Reader Briefs . . .
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 576 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 12 ]] 5o$bobo$bobo!

Hugh W. Thompson of Lefrak City, N.Y. notes that the nonomino: which looks more like the Greek letter Pi than the oft-mentioned pi-heptomino, terminates in the 'pi' constellation in exactly the same number of moves!

EN: recall this is 6 blocks, 2 ponds, and 5 blinkers after 173 gens.

Lifecomic by Mark Linimon of Houston, Tx.
Lifeline vol09 fig 06 03.png
AGARS, Block, Finite, Seeded . . .
On page 116 of the February 1971 issue of Scientific American, Martin
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 720 ]] #C [[ HEIGHT 696 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ COLOR POLY White ]] #C [[ POLYALPHA 0.6 ]] #C [[ POLYT 0 0 0 ]] #C [[ POLYFILL 8.5 7.5 9.5 7.5 9.5 8.5 8.5 8.5 8.5 7.5 64 ]] #C [[ COLOR POLY Black ]] #C [[ POLYSIZE 8 ]] #C [[ POLYALPHA 1 ]] #C [[ POLYLINE 2 2 11 2 11 14 2 14 2 2 64 ]] 2ob2ob2ob2ob2ob2ob2o$2ob2ob2ob2ob2ob2ob2o2$2ob2ob2ob2ob2ob2ob2o$2ob2ob 2ob2ob2ob2ob2o2$2ob2ob2ob2ob2ob2ob2o$2ob2ob2ob2ob2ob2ob2o$9bo$2ob2ob2o b2ob2ob2ob2o$2ob2ob2ob2ob2ob2ob2o2$2ob2ob2ob2ob2ob2ob2o$2ob2ob2ob2ob2o b2ob2o2$2ob2ob2ob2ob2ob2ob2o$2ob2ob2ob2ob2ob2ob2o!

Pattern doomed by a virus (color)

Wainwright has experimented with various infinite fields of regular stable patterns, which he calls agars—rich culture mediums. When, for instance, a single "virus," or bit, is placed in the agar of blocks shown in the illustration at bottom left so that it touches the corners of four blocks, the agar eliminates the virus and repairs itself in two moves. If, however, the alien bit is positioned as shown (or at any of the seven other symmetrically equivalent spots), it initiates an inexorable disintegration of the pattern. The portion eaten away contains active debris that has overall bilateral symmetry along one axis and a roughly oval border that expands, probably forever, in the four compass directions at the speed of light.

Display

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 40 ]] #C [[ WIDTH 600 ]] #C [[ HEIGHT 480 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] #C [[ COLOR POLY White ]] #C [[ POLYALPHA 0.6 ]] #C [[ POLYT 0 0 0 ]] #C [[ POLYFILL 4.5 0.5 5.5 0.5 5.5 1.5 4.5 1.5 4.5 0.5 64 ]] 2ob2ob2ob2o$2ob5ob2o2$2ob2ob2ob2o$2ob2ob2ob2o2$2ob2ob2ob2o$2ob2ob2ob2o !

116

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Gardner discusses some of the work that the writer did with seeded agars. For reference, I have included this material here on the bottom of page six. Robert R. Korfhage of Dallas, Tx. has been experimenting with seeded finite block agars and submits a particular arrangement that evolves into the period three pulsar. Korfhage notes that an arrangement of a dozen blocks when properly seeded (see area outlined in Scientific American reference), will in 61 generations, form the pulsar. The final result is shown at the bottom right of page six in a printout supplied by Robert Bison of Hopewell Jct., N.Y.. (Bison references the original pattern with (O) and shows the final pattern with (X)).

EN: the pi grandson is really a small seeded agar!

Lifequote:
'May you never have less than two neighbors, nor more than three!'
. . . J. E. Still of Wembley, Middlesex, England
Excursions Into the Universe of '3-4' Life

New and interesting developments in this variation of Life continue to be reported by many readers. One of these readers, Tom Webster of La Mesa, Ca. has reported the greatest variety of new material than any other single reader. I would now like to present a sample of Webster's findings. (EN: recall the simple rules in this variation; 3 or 4 bits for birth and 3 or 4 bits for survival. In otherwords, a cell will be occupied in the next generation if and only if it now has 3 or 4 neighbors regardless if it is now empty or occupied).

'I have been doing extensive work with 3-4 Life and am very excited with its possibilities. I have tracked all ominoes up through and including order eight and now have them catalogued. However, 29 of the octominoes grow too large for my 72 by 72 matrix. Of the rest, 126 die, 58 become a period two clock (my term) and 43 become a T (my term). Only 2 become blocks. The others become one of twenty different oscillators.'

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 1600 ]] #C [[ HEIGHT 896 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL 1.5 -2 12 "clock" ]] #C [[ LABEL 7 -2 12 "T" ]] #C [[ LABEL 13 -2 12 "period 6" ]] #C [[ LABEL 20 -2 12 "period 2" ]] #C [[ Y -1 ]] x = 23, y = 5, rule = B34/S34 2bo11bo5bo$3o3b3o3b3o3b2ob2o$2b2o3bo4bo2bo3bobo$bo5bo3b2o6bobo$13bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 960 ]] #C [[ HEIGHT 384 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL -5 0 12 "octomino" ]] #C [[ X -2.5 ]] #C Note that this octomino does not evolve into the #C "double small T in 13" as claimed. Instead, the #C following is the unique octomino that evolves into #C the double small T (and it does so in 13 generations): #C #C oooo #C o ooo #C x = 4, y = 4, rule = B34/S34 o$3o$obo$2b2o!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 960 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ LABEL -4 0 12 "double\nsmall T\nin 13" ]] #C [[ X -2.5 ]] #C The following is the unique octomino that evolves into #C the double small T (and it does so in 13 generations): #C #C oooo #C o ooo #C x = 7, y = 5, rule = B34/S34 5bo2$3ob3o2$bo!

M#1

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 640 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 8 ]] x = 4, y = 3, rule = B34/S34 2o$b2o$2b2o!

'Of the 29 unknown octominoes, 19 become at some point the pattern I call M#1, which is the smallest omino methuselah somewhat analogous to the R-pentomino. I ran M#1 for 271 generations and to a population of 1444 at which time it grew out of my matrix! I would appreciate the final census of this omino from anyone with a program capable of larger sizes.' (EN: the writer strongly suspects that 3-4 LIFE does not meet Conway's first desiderata! A shame).

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Period Three Billiard Table

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 54 ]] #C [[ WIDTH 864 ]] #C [[ HEIGHT 864 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] x = 14, y = 14, rule = B34/S34 2b2ob2obob2o$bob8obo$obo8bobo$2ob8ob2o$bobob2obobobo$2ob2o4b2ob2o$bob 2o5bob2o$2obo5b2obo$2ob2o3bobob2o$bobobobo2bobo$2ob8ob2o$obo8bobo$bob 8obo$2b2obob2ob2o!

'I have done most of the collisions between spaceships and spaceships, and spaceships and clocks, T's, blocks etc.'

'Here are two of the more interesting:

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 704 ]] #C [[ HEIGHT 512 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] x = 9, y = 6, rule = B34/S34 2bo$3o$3o3bo$2bo3b3o$5bobo$7bo!

emits a glider which escapes in generation 50-60 (however the 'gluck' it leaves behind is rather large)

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 704 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ POLYT 0 0 0 ]] #C [[ POLYALPHA 0.25 ]] #C [[ POLYFILL 2.5 2.5 5.5 2.5 5.5 3.5 4.5 3.5 4.5 5.5 3.5 5.5 3.5 3.5 2.5 3.5 2.5 2.5 64 ]] x = 9, y = 5, rule = B34/S34 2bo$3o$3o3b3o$2bo4bo$7bo!

becomes a T in the position shown with (X) in generation 26.

'One more item in conclusion: a way of shooting a spaceship at a fuse that breaks the fuse, lets it burn from the inside, and reverses the spaceship and shoots it back out in generation seven leaving the small T stabilizers behind.'

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 56 ]] #C [[ WIDTH 1680 ]] #C [[ HEIGHT 448 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 3 ]] x = 28, y = 6, rule = B34/S34 3o2b2o2b2o2b2o2b2o2b2o2b3o$3b2o2b2o2b2o2b2o2b2o2b2o$bo24bo2$13b2o$12b 4o!

COMING EVENTS:

This space is reserved for your unknown pattern or any challenge that you want published for the readers:

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 24 ]] #C [[ WIDTH 624 ]] #C [[ HEIGHT 480 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 2 ]] #C [[ GRIDMAJOR 10 ]] #C [[ X 5 Y 0 ]] !

EN: mail it in too!

  • a summary of Life ratios and measures and the set of record holders
  • null cells and permanent cells and their implications!
  • results of straight rows of n-bits up thru n = 50
  • a set of period 2, 4, 6, 8, 10 , 12 oscillators from the 3-4 universe
  • Lifables - a tale of Mr. snail
  • a set of Newlife rules!
  • 'the game of motion'
  • some more exotic glider-block collisions
  • some exotic boxevents
  • excursions into the universe of Hexlife!
  • a pulsar puffer

RANDOM BITS:

  • Thompson has now tracked about half of the 1285 nonominoes and in doing so came across these two which he could not track therefore they are still unk:
N-1 N-2
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 576 ]] #C [[ HEIGHT 384 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 2 ]] o$5o$o3bo$4bo!

#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH ]] #C [[ COLOR LABEL Gray LABELZOOMRANGE -2048 2048 LABELSHADOW OFF ]] #C [[ COLOR ARROW Black ARROWZOOMRANGE -2048 2048 ARROWSHADOW OFF ]] #C [[ COLOR POLY Black POLYZOOMRANGE -2048 2048 POLYSHADOW OFF POLYALPHA 0.15 ]] #C [[ THUMBZOOM 64 ]] #C [[ WIDTH 640 ]] #C [[ HEIGHT 384 ]] #C [[ SUPPRESS ]] #C [[ THUMBSIZE 4 ]] #C [[ ZOOM 2 ]] #C [[ Y 1 ]] o2bo$5o$4b2o!

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