Life In 19x19

Edinburgh tends to meet on Tuesdays, currently coordinating via an OGS group, but see https://edinburghgoclub.wordpress.com/where-to-find-us/ for general info.

There's also a tournament coming up in Edinburgh on September 10.

This seems to be an issue introduced in Lizzie 0.7.4. Unfortunately Lizzie doesn't seem to be actively developed now.

But see https://github.com/featurecat/lizzie/issues/849

There is at least one maintained fork.

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 ...

each one of these has small variations and trade-offs in how they handle ";[]\/()" characters in comments.

When writing, only ] and \ need to be escaped. When reading, just accept whatever follows a \ character as being part of the comment.

Of course there are additional problems when the data ...

If there is going to be a new standard, I hope it will stop using the silly alphabetic encoding for coordinates that only permits board sizes up to 25x25, and just start using zero-indexed or one-indexed integers. That part of the SGF spec confuses me, it specifically reduces the futureproofness ...

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"SGF is a text-only format (not a binary format). It contains game trees, with all their nodes and properties, and nothing more."

[...]

Only one of each property is allowed per node, e.g. one cannot have two comments in one node:
... ; C[comment1] B [dg] C[comment2] ; ...

There's some ...

What if AB[dd][dp][pd][pp] are taken as separate nodes AB[dd]AB[dp]AB[pd]AB[pp]?

A semi-colon ; is how SGF specifies a new node has started.

A node with 4 AB values is written like ;AB[dd][dp][pd][pp]

4 nodes, with 1 AB value each, are written like ;AB[dd];AB[dp];AB[pd];AB[pp] (notice the 4 ...

Not all sgf editors read sgf files correctly. In fact, I'm told that very, very few do. Even the Eidogo one used on this forum seems to choke on quite a few things.

So extending the format seems to be a recipe for more confusion. A fresh start using e.g. xml may be wiser.

By the way, I want to ...

Leela lost both its semi-final games. I enjoyed watching the second one live, it had a rather drastic semeai, which sadly became 1-eye vs 0-eye...

Is there a way to download SGF from that site, and if yes, can someone post it here?

Alright I think I found them...

SGF properties can have multiple values attached to them, e.g. AB[dd][dp][pd][pp] so if one wants to have a winrate for a node by multiple bots, you could have something like:

VR[48.6:1600:7.5:Leela Zero][43.6:900:7.5:Elf]

e.g. Leela thinks Black is 48.6% to win, Elf thinks Black is 43.6% to win...

Cool. I adjusted the PB and PW properties in the SGF files to make it a bit clearer who was who.

Apparently the Leela Zero net is an unofficial 40 block (compared to the normal 15 block).

5) any compatibility issues? I think LZ works with both, but didn't Facebook's ELF only work on Nvidia?

ELF is a nightmare to get up and running, however the weights were converted to the Leela Zero format, and they run very well on the Leela Zero engine. (This combination is by far the strongest ...

Yes it is an older version of Fine Art

Is there any info in the article about how old it is?