v1.2.7

The length of the winrate graph will now be based on the maximum depth of the game tree. This is a nice aesthetic improvement for anyone using the graph with variations.

v1.2.6-rc3

Fix broken PGN generation (when variations within variations exist).

v1.2.6

Only trivial changes from rc3.

To recap, the most important v1.2.6 feature is auto-eval mode (where a line or game is analysed in full).

v1.2.6-rc2

Edit: This version is known to have a bug in PGN generation.

To go along with the auto-eval feature (which evaluates a whole line of the game tree) we now store info for previously seen positions in the tree so we can come back to them later and see what info we had.

(Note that such info is instantly replaced if you visit a node with the engine running.)

To facilitate the above, there were some modest logic changes. Please report any bugs or performance issues.

v1.2.6-rc1

Edit: This version is known to have a bug in PGN generation.

Features:

• Auto-eval mode (where Lc0 advances through the entire game or current variation, analysing the position for a time and generating the winrate graph).
• To facilitate the above, separate node limit settings for normal use and self-play / versus / auto-eval modes (see Engine menu).
• Dialog to select Syzygy folder.

This is marked as a release candidate because, behind the scenes, there was a massive rewrite of the tree-handling code. Please report any bugs or performance problems, here, or on the Lc0 Discord.

v1.2.5

• Temperature options to make self-play and versus-play less predictable.
• Some better error handling if the engine misbehaves in some way.

v1.2.4

• Self-play (Leela vs Leela) option.
• Mostly recognises 50 move rule, triple repetition, and insufficient material.
• The behaviour of "Versus Mode" (where you play against Leela) is now less confusing (I think).
• Minor graph improvements.
• Minor FEN loader improvements.

v1.2.3

• Winrate graph
• Compatible with Lc0's new S statistic (previously called Q+U)
• Versus mode (play against Leela) more user-friendly in some ways

The winrate graph was a fairly complex new feature, let me know if it misbehaves or causes any issues (including performance issues). You can turn it off by setting its size to 0 in the Sizes menu.

v1.2.2

Fix a potential bug where file dialogs would trigger an error message. I believe most users will not have been affected and will not need to upgrade from 1.2.1.

(There are other minor changes and performance improvements hardly worth mentioning.)

v1.2.1

• FEN loader will be a bit more liberal.
• PGN loader will ignore a byte order mark (BOM) in UTF8 files.
• Save / open / choose dialogs will remember an appropriate directory from last time.
• Some compatibility improvements for A/B engines (but it's still a bad idea to use them).
• Infobox menu has a brief explanation of what each term (e.g. Q, V, etc) is.