--- a/slides/slides02.tex	Fri Nov 17 02:13:40 2017 +0000
+++ b/slides/slides02.tex	Fri Nov 17 09:13:03 2017 +0000
@@ -2,7 +2,9 @@
 \usepackage{../slides}
 \usepackage{../graphics}
 \usepackage{../langs}
-%\usepackage{../data}
+\usepackage{chessboard}
+\usepackage[LSBC4,T1]{fontenc}
+% \usepackage{../data}
 
 \hfuzz=220pt 
 
@@ -193,7 +195,7 @@
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 \begin{frame}[t]
-\frametitle{\begin{tabular}{c}Why Scala?\end{tabular}}
+\frametitle{Why Scala? No null!}
 
 
 \begin{itemize}
@@ -217,55 +219,35 @@
 \end{bubble}
 \end{textblock}
   
-\begin{textblock}{5}(11.8,1)
-%%\includegraphics[scale=0.20]{hoare.jpg}\\
+\begin{textblock}{5}(12.5,1.9)
+\includegraphics[scale=0.05]{../pics/hoare.jpg}\\
 \end{textblock}
   
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
-\frametitle{Types}
-
-\begin{itemize}
-\item Base types\smallskip
-
-  \begin{tabular}{@{}l@{}}
-    \textcolor{codegreen}{\texttt{Int}},
-    \textcolor{codegreen}{\texttt{Long}},
-    \textcolor{codegreen}{\texttt{BigInt}},
-    \textcolor{codegreen}{\texttt{Float}},
-    \textcolor{codegreen}{\texttt{Double}}\\
-    \textcolor{codegreen}{\texttt{String}},
-    \textcolor{codegreen}{\texttt{Char}}\\
-    \textcolor{codegreen}{\texttt{Boolean}}
-  \end{tabular}
-
-\item Compound types \smallskip   
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[c,fragile]
+\frametitle{\begin{tabular}{c}\\[1cm]\alert{Questions?}\end{tabular}}
 
-  \begin{tabular}{@{}ll@{}}
-    \textcolor{codegreen}{\texttt{List[Int]}}     & lists of Int's \\
-    \textcolor{codegreen}{\texttt{Set[Double]}}   & sets of Double's \\
-    \textcolor{codegreen}{\texttt{(Int, String)}} & Int-String pair\\
-    \textcolor{codegreen}{\texttt{List[(BigInt, String)]}} &
-                                      lists of BigInt-String\\
-                                      & pairs\\
-    \textcolor{codegreen}{\texttt{List[List[Int]]}} & list of lists of Int's\\                                  
-  \end{tabular}
-
-\end{itemize}  
-
-\end{frame}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
-\frametitle{\begin{tabular}{c}\\[3cm]\alert{Questions?}\end{tabular}}
-
-\mbox{}
+\begin{center}
+\chessboard[maxfield=g7,
+            color=blue!50,
+            linewidth=0.2em,
+            shortenstart=0.5ex,
+            shortenend=0.5ex,
+            markstyle=cross,
+            markfields={a4, c4, Z3, d3, Z1, d1, a0, c0},
+            color=red!50,
+            markfields={f5, e6},
+            boardfontsize=12pt,labelfontsize=8pt,
+            setpieces={Ng7, Nb2},showmover=false]
+\end{center}
+            
+\begin{center}
+My Scala Office Hours: Thursdays 11 -- 13
+\end{center}
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 \end{document}