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@rosenthj rosenthj released this Feb 19, 2019 · 4 commits to master since this release

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"Lazy Ignorance SMP" is a new Lazy SMP variant which I described on the Computer Chess Club forum. It resulted in minor gains on low core counts, which became hard to measure on high core counts.

Singular Extensions and Counter Move History are search features found in top open source programs such as Stockfish, Ethereal and Xiphos. These features resulted in large gains in self play tests.

The timing of this release is partially due to the increase in playing strength and partially due to the upcoming TCEC S15 competition.
I do not have access to a Windows computer at the moment, so the Windows binaries are cross compiled and at the time of writing completely unchecked.

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@rosenthj rosenthj released this Jan 21, 2019 · 7 commits to master since this release

Winter 0.4a features an improved eval function and a simplified SMP which should be more stable on systems under heavy load.
It is also now easier to train your own flavour of Winter, instructions will follow soon in the Readme.md on github.

Compared to Winter 0.4 the only changes are a fixed selective depth UCI output, version number update and Windows compile is a cross compile instead of native.

Assuming the cross compile functions works for other users, the next few versions will likely also be cross compiles, as I am not expecting to have access to a private Windows system again until August.

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@rosenthj rosenthj released this Jan 19, 2019 · 8 commits to master since this release

Winter 0.4 features an improved eval function and a simplified SMP which should be more stable on systems under heavy load.
It is also now easier to train your own flavour of Winter, instructions will follow soon in the Readme.md on github.

Assets 3

@rosenthj rosenthj released this Dec 13, 2018 · 37 commits to master since this release

Now supports SMP!

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@rosenthj rosenthj released this Aug 5, 2018 · 75 commits to master since this release

Updated version number

Added copyright blurb to machine learning .h and .cc

re-estimated variable influence

removed obsolete readme text. Need to update readme in general though.

added symmetry test, positions are from CPW iirc.
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@rosenthj rosenthj released this Jan 23, 2018 · 103 commits to master since this release

Winter is a UCI chess engine.

For a high level overview of the features, someone seems to already have made a nice CPW page for Winter. It contains a pretty good overview of the features I mentioned when I announced Winter on the CCC forums as well as links that can help understand those features.

Compared to Winter v0.1 support for Windows has been added.

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@rosenthj rosenthj released this Jan 13, 2018 · 106 commits to master since this release

Winter is a UCI chess engine.

For a high level overview of the features, someone seems to already have made a nice CPW page for Winter. It contains a pretty good overview of the features I mentioned when I announced Winter on the CCC forums as well as links that can help understand those features.

Thank you to Julian Croci for building the binary for OSX. On Linux and OSX systems the binary can be built via the makefile in the root directory.

Assets 2
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