--- a/slides/slides06.tex	Tue Nov 12 10:51:02 2013 +0000
+++ b/slides/slides06.tex	Tue Nov 12 14:40:46 2013 +0000
@@ -606,7 +606,7 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
 \begin{frame}[c]
-\frametitle{Sudoku}
+\frametitle{BTW}
 
 Are there sudokus that cannot be solved?\pause