Advanced handouts

Add missing file
Co-authored-by: Mark <mark@betalupi.com>
Co-committed-by: Mark <mark@betalupi.com>

src/Advanced/Retrograde Analysis/main.tex

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+% use [nosolutions] flag to hide solutions.
+% use [solutions] flag to show solutions.
+\documentclass[
+	solutions,
+	shortwarning
+]{../../../lib/tex/ormc_handout}
+\usepackage{../../../lib/tex/macros}
+
+\usepackage{chessfss}
+\usepackage{chessboard}
+\usepackage{anyfontsize} % Silences some chess warnings
+\usepackage{afterpage}
+\usepackage[hang]{footmisc}
+
+\input{chess-setup}
+
+\def\difficulty#1#2{
+	\textbf{Difficulty:} \stars{#1}{#2} \par
+	\vspace{1mm}
+}
+
+\uptitlel{Advanced 2}
+\uptitler{\smallurl{}}
+\title{Retrograde Analysis}
+\subtitle{
+	Prepared by Mark on \today{} \\
+	Based on books\footnotemark{} by Raymond Smullyan
+}
+
+\begin{document}
+
+	\maketitle
+
+	\footnotetext[1]{
+		Most of the easy problems in this handout are from \textit{The Chess Mysteries of Sherlock Holmes}.\\
+		The rest are from \textit{The Chess Mysteries of the Arabian Knights}.
+	}
+
+	\input{parts/01 intro}
+
+	\input{parts/02 easy}
+	\input{parts/03 medium}
+	\input{parts/04 hard}
+\end{document}