Binary file slides/slides02.pdf has changed

--- a/slides/slides02.tex	Fri Nov 16 02:06:03 2018 +0000
+++ b/slides/slides02.tex	Sat Nov 17 13:06:17 2018 +0000
@@ -280,19 +280,19 @@
 \begin{frame}[c,fragile]
 \frametitle{\begin{tabular}{c}\\[1cm]\alert{Questions?}\end{tabular}}
 
-\begin{center}
-\chessboard[maxfield=g7,
-            color=blue!50,
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-            shortenstart=0.5ex,
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-            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}
+%\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}
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