The New #1 Engine In the World*: Guillemot

[FruitLoopDingus]

Hello! This is my first time posting, but I've been lurking on and off for 6 years now and have been a spectator in the chess engine community (TCEC/CCC) since 2018.

I am releasing Guillemot, which is not only not a clone of Stockfish, but the #1 chess engine in the world... but only on modern versions of Cutechess/Cutechess QOL on Windows.

Not only does it have the most unique playing style out of any engine certifiably, it is also the only engine capable of consistently defeating the latest version of Stockfish with fair time controls, opening book, and sample size (on Cutechess using Windows).

Code: Select all

Score of Guillemot vs Stockfish 18+ Dev: 96 - 4 - 0 [0.960]
...      Guillemot playing White: 47 - 3 - 0  [0.940] 50
...      Guillemot playing Black: 49 - 1 - 0  [0.980] 50
...      White vs Black: 48 - 52 - 0  [0.480] 100
Elo difference: 552.1 +/- 342.4, LOS: 100.0 %, DrawRatio: 0.0 %
SPRT: llr 0 (0.0%), lbound -inf, ubound inf
100 of 100 games finished.

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By default, Boss Mode and max difficulty will be enabled in the UCI settings. These were the settings used to test against Stockfish. If you are not on Windows or not on Cutechess, I very highly recommend you disable Boss Mode entirely.

Disclaimer: Please don't actually include this on any rating lists or in engine tournaments with Boss Mode enabled unless you are very aware of what it does, many engines are unable to handle the style of play. It is perfectly fine with Boss Mode disabled however.

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I hope you have fun or at least a laugh with this engine! I have more practical things in the works but this was something fun I could quickly whip up.

*using Cutechess on Windows

https://github.com/MARLIN-Tools/guillemot

[FruitLoopDingus]

I have published a video with the engine playing on Boss Mode against itself using an unmodified Cutechess QOL on standard chess on Windows. Enjoy!

[CMCanavessi]

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namespace guillemot {
static const char* const COMMENTS_TIER0[] = {
    "Perfectly calculated.",
    "All according to plan.",
    "I meant to do that.",
    "This is fine.",
};
static const char* const COMMENTS_TIER1[] = {
    "Nothing to see here...",
    "Perfectly normal chess move.",
    "Trust me, I'm a grandmaster.",
};
static const char* const COMMENTS_TIER2[] = {
    "My piece was always there. You must be confused.",
    "I believe in efficient piece development.",
    "Shortcuts are just advanced strategy.",
    "Teleportation is a valid chess technique.",
};
static const char* const COMMENTS_TIER3[] = {
    "Found this piece in my pocket.",
    "Reinforcements have arrived!",
    "Is this YOUR piece? It's mine now.",
    "Finders keepers.",
    "The chess gods have blessed me with extra pieces.",
};
static const char* const COMMENTS_TIER4[] = {
    "This pawn identifies as a Queen now.",
    "Your pieces look better in my colors.",
    "Field promotion, very common in wartime.",
    "Puberty hits different in chess.",
};
static const char* const COMMENTS_TIER5[] = {
    "I AM THE BOARD.",
    "Rules are a social construct.",
    "UNLIMITED POWER!",
    "Your king is taking a vacation.",
    "Dance, puppet.",
    "I could checkmate but this is funnier.",
};

"This pawn identifies as Queen now"

[Jjaw]

Hilarious late April fools joke

[GenoM]

Hilarious late April fools joke

not funny

[mar]

"Shashin quantum computing"

[JohnW]

Excuse my ignorance, but why is it the #1 chess engine in the world... but only on modern versions of Cutechess/Cutechess QOL on Windows? Why isn't it #1 on Fritz or Arena etc?

[JohnW]

Boss mode seems to make illegal moves. It adds a letter to the move such as 1. g3N

[FruitLoopDingus]

Hi John, I won’t spoil the surprise for you but if you want to see why specifically it’s the strongest on CuteChess only, I have posted a YouTube video below my original post. I hope it helps!

[Uri Blass]

It does not play chess and I do not understand the rules of the game in the video.
Watched the video some times and I see the following in one game(In my notation=WQ means that the piece can change the color of it to white)

1.b2-b3=N c7-g4
2.f2-e6 Nb8-c5
3.e2-g4 f7-f6=N
4.Qd8-d5=WQ Qd5-e2=BQ
5.e6=R Rh8-e3
6.Qe2-g6=WQ+ Bf8-f4
7.Qg6-a3 h8=K