venn.tex · 67 lines
\documentclass[border=12pt,tikz]{standalone}
\usetikzlibrary{backgrounds, positioning}
\usepackage[T1]{fontenc}
\usepackage[scaled=0.98]{helvet}
\definecolor{colE}{RGB}{160,82,20} % espresso: brown
\definecolor{colM}{RGB}{70,110,190} % milk: blue
\definecolor{colC}{RGB}{0,150,160} % cold: cyan
\begin{document}
\begin{tikzpicture}[
font=\sffamily,
drink/.style={text width=2.4cm, align=center, inner sep=1pt, font=\small\sffamily},
setlabel/.style={font=\large\bfseries\sffamily, inner sep=2pt},
]
\def\R{2.6cm} % circle radius
\def\d{1.5cm} % distance of each centre from the middle
\coordinate (E) at (90:\d); % Has espresso
\coordinate (M) at (210:\d); % Has milk
\coordinate (C) at (330:\d); % Served cold
% ---- the universe (everything that is not in any circle lives here) ---
\begin{scope}[on background layer]
\fill[black!3, rounded corners=6pt] (-6.7,-4.35) rectangle (6.7,5.15);
\end{scope}
\draw[black!30, line width=0.8pt, rounded corners=6pt] (-6.7,-4.35) rectangle (6.7,5.15);
% ---- filled circles (behind the labels) -------------------------------
\begin{scope}[on background layer]
\fill[colE, fill opacity=0.35] (E) circle (\R);
\fill[colM, fill opacity=0.35] (M) circle (\R);
\fill[colC, fill opacity=0.35] (C) circle (\R);
\end{scope}
\draw[colE, line width=1pt] (E) circle (\R);
\draw[colM, line width=1pt] (M) circle (\R);
\draw[colC, line width=1pt] (C) circle (\R);
% ---- set labels -------------------------------------------------------
\node[setlabel, colE] at (0,4.6) {Has espresso};
\node[setlabel, colM] at (210:5.6cm) {Has milk};
\node[setlabel, colC] at (330:5.6cm) {Served cold};
% ---- the drinks -------------------------------------------------------
% espresso only (hot shot, no milk)
\node[drink] at (90:3.05cm) {short\\ black};
% milk only (steamed milk, no coffee)
\node[drink] at (201:2.75cm) {babyccino};
% cold only (brewed black, served over ice)
\node[drink] at (338:2.75cm) {cold brew};
% espresso + milk, served hot
\node[drink] at (139:2.10cm) {flat white};
% espresso + cold, no milk
\node[drink, text width=1.9cm] at (37:2.0cm) {iced long\\ black};
% milk + cold, no espresso
\node[drink] at (270:1.40cm) {milkshake};
% all three
\node[drink] at (0,-0.15) {iced latte};
% none of the three: hot, brewed (not espresso), no milk
\node[drink, text=black!65] at (-5.0,4.0) {pour-over};
\node[drink, font=\footnotesize\itshape, text=black!45, text width=3.2cm]
at (-5.0,3.45) {(outside all three)};
\end{tikzpicture}
\end{document}round 1 of 7
Every drink in its region and clear of every edge. Round 5 pushed iced long black onto a line and round 6 moved it back.
modelqwen/qwen3.8-flashtasktikz-coffee-venn@v1date2026-09-23rounds7 of 8 allowedcost$0.0373thinkingmediumtokens682,476 in, 37,456 out, of which 27,827 reasoningtime9 min 38 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
run 2 · 3r · $0.0287Passed on all three of its renders, with a geometry script checking the label positions along the way.
run 3 · 1r · $0.0440One render, and it passes all four. It measured each label in LaTeX and its clearance from each circle in Python first, and the clock ended it while it was still tuning the layout.same prompt, other modelsall 50 runs on A three-set coffee Venn diagram →
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.
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.