Extrementhusiast wrote:The last 16-bit P2 in about the least likely way imaginable (in two slight variants): ...

The corresponding 17-bit P2 can be made the same way far more cheaply: ...

Very nice! The second converter improves one 16-bit P2 from 24 to 21 gliders.

It solves 3 previously unknown 17s from 17, 27, and 31 gliders respectively.

(It also solves 2 18s, 9 19s, 7 20s, and 15 21s.)

`x = 188, y = 31, rule = B3/S23`

14bo99bo49bo$3bo10bobo86bo10bobo36bo10bobo$4bo9boo88bo9boo38bo9boo$bb

3o44boo51b3o47b3o$50boo$16bo32bo3bobo60bo49bo$16bobo34boo61bobo47bobo$

16boo36bo61boo48boo4$16bo99bo32boo15bo12boo$oo3boo7boo14boo3bo30bo12b

oo5bo18boo7boo19bo13bobo3boo7boo13bobo3bo$o5bo8boo13bo4bo30bo12bo6bo

19bo8boo18bo20bo8boo18bo$bobobo25bobobbo23b3obobbo12bobobobbo11b3obobo

23b3obobbo14bobobo25bobobbo$$3ob3o23b3obobo24bobobobo12bobbobobo12bobo

b3o23bobobobo13b3ob3o23b3obobo$37bo12boo8bo5boo13bo4boo11bo29bo7bo49bo

$36boo13boo7boo19bo17boo28boo5boo48boo$50bo4$12bo36boo61bo49bo$12boo

34bobo61boo48boo$11bobo3bo32bo60bobo3bo43bobo3bo$15boo98boo48boo$16boo

44b3o51boo48boo$51boo9bo$50bobo10bo$52bo!

The first converter can make one unknown 17-bit P2 into two others, similar for 18s, and solves one 18.