Life In 19x19

Is there a way to play against the old, weaker Leela Zero Networks? I haven't been able to get them to work in Lizzy, for example.
I really mean the old ones, so maybe one of the hundred first networks from November/December 2017.
Is there any way to include them as weight.txt in a Leela program, and if so, how?
Thank you!!!

All the networks are available HERE.
If you want to play at a certain level (2d, or 14k for ex.) THIS SITE tells you which network to use.

To play in Sabaki 0.51.1 with LZ network #90 (1a198f...), download it, put it in the same folder as leelaz.exe , and Add the engine. For lizzie, first, copy the network in the ...\lizzie\weights folder.
Start lizzie, go to Settings, Engine , and replace the network in one of the engines (for ex. engine 1)

Thanks for the super tip! Unfortunately the older, weaker networks do not run with Sabaki. At least I can't get them running. From 58 and higher the networks run fine, but 57 and lower unfortunately not.

The problem is not Sabaki or Lizzie but Leela itself - it seems the modern program cannot run such ancient networks (this is probably a bug). You could probably get around this by downloading an old version of Leela such as 0.12.

Note that 0.12 expects the weights file to be decompressed, so you must arrange for the .gz file to be decompressed.