kolibrios/programs/demos/life2/lif/SLR.lif

#Life 1.05
#D Still-Life Reflector
#D 
#D Converts one glider into 4 for any input stream
#D with a period of 672 or greater, unless pipelining
#D techniques are employed. It is a great challenge
#D to come up with the small, fast reflector that
#D consists solely of still-lifes. Dieter Leithner
#D (dietrich.deithner@dlr.de) is offering a $100
#D prize for the first stable glider reflector that
#D fits within a 50x50 box.
#D 
#D A glider collides with a boat in generation 97,
#D destroying the boat but creating a B-heptomino at
#D generation 107. This is converted into a Herschel
#D in 59 generations. Herschel conduits of lengths 64,
#D 77, 77, 64, 64, 77, 119, and 64 set the Herschel up
#D for a final collision to recreate the destroyed
#D boat.
#D 
#D The first stable glider reflectors were created by
#D Paul Callahan and Dean Hickerson in late 1996. This
#D one by Dave Buckingham, May 30, 1997.
#N
#P -31 -20
**
*.*
.*
#P -44 -16
*.**
**.*
#P -35 -13
**
**
#P -27 -5
..**
..*
*.*
**
#P -47 13
**
**
#P -46 20
**
**
#P -42 18
**
**
#P -40 24
**
**
#P -26 25
..**
...*
***
*
#P -11 24
**
**
#P -11 5
...*
.***
*
**
#P -1 12
*
***
...*
..**
#P 14 15
**
**
#P 14 32
**
*
.***
...*
#P 20 22
..**
.*.*
.*
**
#P 34 29
**
**
#P 39 24
**
**
#P 41 28
**
**
#P 45 22
**
**
#P 12 4
..**
...*
***
*..***
..*...*
.**..**
#P 43 -13
**
**
#P 45 -7
**
**
#P 49 -9
**
**
#P 50 -2
**
**
#P 27 -16
...*
.***
*
**
#P 14 -13
**
**
#P 3 -3
**
*.*
..*
..**
#P 0 -33
...*
.***
*
**
#P -1 -27
**
**
#P -6 -26
**
**
#P -7 -32
**
**
#P -14 1
..**
...*
***
*
#P -16 -1
**
**
#P -20 -8
*
***
...*
..*.*
...*
#P -18 -14
**
**
#P -26 -40
**
**
#P -33 -39
**
**
#P -31 -35
**
**
#P -37 -33
**
**
#P -26 -17
**
*
.***
...*
#P -59 -46
*
.**
**