TikZ: a three-set coffee Venn diagram, by deepseek-v4.1-flash
deepseek-v4.1-flash · round 5 of 5 · seed 3$0.02SVGPNGPDFvenn.tex
venn.tex · 40 lines
\documentclass[tikz,border=14pt]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[font=\sffamily\small]

  % Circle geometry
  \def\r{2.6}
  \coordinate (A) at (0, 1.5);      % Has espresso
  \coordinate (B) at (-1.35, -0.85); % Has milk
  \coordinate (C) at (1.35, -0.85);  % Served cold

  % Fills
  \begin{scope}
    \fill[red, opacity=0.22]   (A) circle (\r);
    \fill[green, opacity=0.22] (B) circle (\r);
    \fill[blue, opacity=0.22]  (C) circle (\r);
  \end{scope}

  % Outlines
  \draw[thick, red!70!black]   (A) circle (\r);
  \draw[thick, green!60!black] (B) circle (\r);
  \draw[thick, blue!70!black]  (C) circle (\r);

  % Circle titles
  \node[font=\bfseries\large, red!70!black]   at (0, 4.5)      {Has espresso};
  \node[font=\bfseries\large, green!60!black] at (-3.4, -3.8)  {Has milk};
  \node[font=\bfseries\large, blue!70!black]  at (3.4, -3.8)   {Served cold};

  % Drink labels in their regions
  \node[align=center] at (0, 3.0)     {short black};        % espresso only
  \node[align=center] at (-1.4, 1.0)  {flat white};         % espresso + milk
  \node[align=center] at (1.4, 0.75)  {iced long\\black};   % espresso + cold
  \node[align=center] at (0, 0.0)     {iced latte};         % all three
  \node[align=center] at (-2.35, -1.75) {babyccino};        % milk only
  \node[align=center] at (0, -1.75)   {milkshake};          % milk + cold
  \node[align=center] at (2.35, -1.75) {cold brew};         % cold only
  \node[align=center] at (0, -4.6)    {pour-over};          % outside all three

\end{tikzpicture}
\end{document}
round 1 of 5
A three-set coffee Venn diagram, by DeepSeek 4.1 Flash, the render after round 1
12345What the model saw after each round. The picture above is the round that was scored, round 5.
gallery/A three-set coffee Venn diagram/DeepSeek 4.1 Flash, run 3

Every drink in its region and clear of every edge, in five rounds.

modeldeepseek/deepseek-v4.1-flashtasktikz-coffee-venn@v1date2026-09-22rounds5 of 8 allowedcost$0.0232thinkingmediumtokens210,102 in, 12,810 out, of which 9,061 reasoningtime2 min 49 s
Compilesdecided by a number, from the filepass
Seven regions, three namesdecided by a number, from the filepass
Every drink in its regiondecided by a number, from the filepass
No label on an edgedecided by a number, from the filepass
read the post
its other runs
A three-set coffee Venn diagram, by DeepSeek 4.1 Flash, run 1run 1 · 2r · $0.0193Every drink in the right region, and six of the eight labels lying across a circle's edge.A three-set coffee Venn diagram, by DeepSeek 4.1 Flash, run 2run 2 · 3r · $0.0254Two labels across an edge, with white boxes behind them that hide the line they cross.
same prompt, other modelsall 50 runs on A three-set coffee Venn diagram →
the prompt it was given
Using LaTeX and TikZ, draw a Venn diagram of three overlapping circles labelled "Has espresso", "Has milk" and "Served cold". Write each of these drinks in the region where it belongs: short black, flat white, iced latte, iced long black, cold brew, babyccino, milkshake, pour-over.
Frozen at v1. This model got this and nothing else.
ground truth

Short black is espresso only, flat white espresso and milk, iced long black espresso and cold, iced latte all three, babyccino milk only, milkshake milk and cold, cold brew cold only, and pour-over outside every circle. The circles and words are read back out of the compiled PDF, each word has to be centred in its own region, and no letter may touch a circle's outline, with the line's width counted. How it is scored, and this run's files on GitHub.