Goldtiger997 wrote:I'm planning on attempting to find syntheses for all still lifes 15 bits and under, with less than one glider per bit. We have already done up to 14 bits.

I have done the first ten listed with syntheses greater than or equal to one glider per bit that appear on mniemiec's website. ... Anybody want to help...

This is probably the next best step, as far as the still-lifes are concerned. As of yesterday, I had 19 remaining 15-bit still-lifes at 1 glider per bit, and 94 at greater than 1 glider per bit. This does not yet include Bob Shemyakin's work at completing the synthesis of the remaining 15-bit still-lifes. (I still need to assimilate those, and see if any alternate synthesis paths might be more optimal, especially in light of some of the new converters that have been discovered in the past year).

All but one of the above syntheses (#4) improve the state of the art. Congratulations! 6 of them can be slightly improved, by tightening up initial still-life synthesis and/or final cleanup:

#1 (15.5): Reduced from 13 to 12 (row 1 left).

#3 (15.38): Reduced from 12 to 11 (row 2 left).

#4 (15.45): Reduced from 14 to 11 (row 3 left). However, this is obsolete; you had previously built this from 12 gliders on 2016-10-14; BlinkerSpawn had reduced it to 11, and I had reduced it to 10. (row 4 left).

#6 (15.79): Reduced from 10 to 9 (row 1 right).

#7 (15.80): Reduced from 13 to 12 (row 2 right).

#8 (15.92): Reduced from 13 to 12 (row 3 right).

Code: Select all

```
x = 339, y = 208, rule = B3/S23
109bo$108bo$108b3o18$171bo$172bo$170b3o$174bo$173bo$173b3o17boo18boo$
193boo18boo$103bo141boo18boo18boo$103bobo138bobbo16bobbo16bobbo$30boo
18boo18boo31boo5boo132bobo17bobo17bobo$10b3o17boo18boo18boo38boo112bo
18booboo15booboo15booboo$10bo89bobo120bo20bobo17bobo17bobo$11bo55boo
32boo4boo114b3o18bobo17bobo17bobo$8boo19boo18boo16boo32bo5boo110b3o23b
o19bo19bo$7bobo19boo14bo3boo96booboo67bo$9bo36boo99bobooboboobo62bo$
45boo106booboo19bo$175boo15bo19bo$98b3o75boo14bo19bo$100bo91bo9boo8bo$
99bo103boo$105b3o94bo$105bo$106bo$$193boo18boo23b3o17b3o$100boo91boo
18boo39b3o$101boo153bo$100bo154bo$107b3o24boo$107bo26bobo35bo$108bo25b
o38bo$171b3o3$173bo$172boo$172bobo8$84bo$84boo$83bobo13$103bo101bobo$
103bobo100boo$103boo101bo$214bobo$53bo160boo$54bo160bo$52b3o$56bo150bo
$55bo149bobo$55b3o17boo18boo109boo$75boo18boo9bo$105bo65bo$16bo15boo
18boo18boo18boo11b3o64bo$14bobo15bobo17bobo17bobo17bobo6b3o66b3o$15boo
16boo18boo18boo18boo6bo11boo75boo28boo$35boo18boo18boo18boo5bo11bobboo
bboo49bo17bobo27bobo16boo28boo18boo18boo$35bobo17bobo17bobo17bobo16bob
obbobbo48boo18bo29bo16bobbo3bo22bobbo3bo12bobbo3bo12bobbo3bo19bo$5bo5b
oobb3o18boo18boo18boo18boo17boobboo50bobo32boo30bobo3bobo21bobo3bobo
11bobo3bobo11bobo3bobo17bobo$6bo5boobo56boo18boo113boo30bo3bobbo22bo3b
obbo12bo3bobbo12bo3bobbo16bobbo$4b3o4bo4bo34b3o18boo18boo112bo36booboo
25booboo15booboo8boo5booboo15booboo$53bo190bobbo26bobbo16bobbo7bobo6bo
bbo16bobbo$52bo190bobbo26bobbo16bobbo10bo5bobbo16bobbo$54b3o187boo28b
oo18boo18boo18boo$54bo152boo$55bo150bobo$208bo58bobo$202boo64boo$201bo
bo5boo57bo$203bo5bobo$209bo30boo7boo19boo7boo$239bobo7boo18bobo7boo$
239boo28boo$295bo19bo$294bobo17bobo$242boo28boo20bobo17bobo$242boo28b
oo21bo19bo$72boo243boo$43boo27boo243bobo$43boo201boo28boo39bo$15boo48b
oo4bo174boo28boo$5bo9bobo18boo27boo4boo$6bo8bo20boo32bobo$4b3obboo$8bo
bo102bo14bo4bo$10bo101bobo14boobobo$112boo14boobboo98bo29bo$232bo29bo$
112boo18boo98bo29bo$112boo18boo$76b3o$18bobo26b3o$18boo$19bo$$18boo$bo
15boo$bbo16bo44bo50boo18boo18boo$3o32bo27bobo50bo19bo19bo$34bobo26bobo
49bo19bo19bo$3b3o28bobo27bo50boo18boo18boo$5bo29bo80bo19bo19bo102bo$4b
o110bo19bo19bo101boo$114bo19bo19bo103boo$114bobo17bobo17bobo$70bo44bob
o17bobo17bobo$6bo34bo28bo45boo18boo18boo$6boobboo29bo28bo$5boboboo30bo
$11bo228bo$240bobo$240boo7$319bo$295bobo21bobo$296boo21boo$296bo$287b
oo28boo$267boo18boo8boo18boo$228bo38boo28boo$226bobo$179bo47boo$180bo
87boo28boo$178b3o48boo37boo8boo18boo8boo$182bo47boo46boo28boo$181bo47b
o54boo28boo18boo$181b3o17boo38boo41bobo19boo6bobo17bobo$201boo38boo44b
o17bobo9bo19bo$285boobo18bo7boobo16boobo$102boo180bobobo25bobobo15bobo
bo$102bobo179bobbo26bobbo16bobbo$102bo182boo28boo18boo5$106bobo82boo
38boo$10bo95boo82bobbo36bobbo$9bo97bo83boo38boo$9b3o159bobo$172boo$6bo
165bo24bo39bo$4bobo108boo18boo18boo39bobo37bobo$5boo21boo18boo18boo18b
oo26bo19bo19bo16b3o20bobo37bobo$27bobbo16bobbo16bobbo16bobbo24bo19bo
19bo19bo21bo39bo$21b3o3bobo11b3o3bobo11b3o3bobo11b3o3bobo25boo18boo18b
oo17bo$6b3o19bo19bo3bo15bo19bo27bo19bo19bo$6bo44bo63bo19bo19bo$7bo43b
3o14bo19bo25bo19bo19bo$67bobo17bobo24bobo17bobo17bobo$48b3o16bobo17bob
o6boo17bobo17bobo17bobo$48bo19bo19bo7bobo17bo19bo19boo$49bo46bo$142boo
$94boo42bobboo$93bobo42boo3bo$95bo41bobo5$208bo$208boo$207bobo!
```