Removed chess game

Advanced/Retrograde Analysis/parts/03 medium.tex

@@ -1,11 +1,9 @@
-\ifextras\else
-	\section{Slightly harder problems}
-\fi
+\section{Slightly harder problems}
+
 
 % Sherlock, A matter of direction
 \problem{A matter of direction}
-%\difficulty{3}{5}
-\onestars{4}
+\difficulty{3}{5}
 
 The results of a game of chess are shown below. \par
 Did White start on the north or south side of the board? \par
@@ -18,15 +16,6 @@ Did White start on the north or south side of the board? \par
 	Bh1
 }
 
-\begin{hintlist}
-	Part 1: \tab\threestars{0}{2}{2} \par
-	\hintcontent{
-		The bishop on H1 is important. How did White deliver this check?
-	}
-	\vspace{2mm}
-	Done: \tab\threestars{2}{2}{0}
-\end{hintlist}
-
 \begin{solution}
 	Let us first find White's last move. It wasn't with the pawns on D4 and E5, since Black wouldn't have a move before that.
 	(Note the double-check on A7).
@@ -57,8 +46,8 @@ Did White start on the north or south side of the board? \par
 
 % Arabian Knights 1
 \problem{Where is the king?}
-%\difficulty{3}{5}
-\startimes{8}
+\difficulty{3}{5}
+
 
 The white king has again become invisible. Find him. \par
 \hint{White started on the bottom. En passant.} \par
@@ -70,31 +59,6 @@ The white king has again become invisible. Find him. \par
 }
 
 
-\begin{hintlist}
-	Part 1: \tab\threestars{0}{2}{6} \par
-	\hintcontent{
-		Either the white king is on B3, or Black is in check. \par
-		First, show that the latter implies the former.
-	}
-
-	Part 2: \tab\threestars{2}{2}{4} \par
-	\hintcontent{
-		Moving back in time, you'll need to add two pieces to the board (not counting the king). \par
-		They have been captured!
-	}
-
-	\vspace{2mm}
-	Done: \tab\threestars{4}{4}{0}
-\end{hintlist}
-
-
-\makeatletter
-\if@solutions
-	\vfill
-	\pagebreak
-\fi
-\makeatother
-
 \begin{solution}
 	Looking at the board, we see that the white king is on B3 or Black is in check.
 
@@ -153,8 +117,8 @@ The white king has again become invisible. Find him. \par
 
 % Arabian Knights, intro (given with solution)
 \problem{Double-checks}
-%\difficulty{3}{5}
-\startimes{10}
+\difficulty{3}{5}
+
 
 White to move. Which side of the board did each color start on? \par
 \hint{What was Black's last move? }
@@ -165,18 +129,6 @@ White to move. Which side of the board did each color start on? \par
 	Nd1,kf1,Kh1
 }
 
-\begin{hintlist}
-	Part 1: \tab\threestars{0}{6}{3} \par
-	\hintcontent{
-		Double-checks make all positions seem impossible... \par
-		Try E1 and F2 anyway. Can you add pieces to make it make sense? \par
-		Don't forget about promotion.
-	}
-
-	\vspace{2mm}
-	Done: \tab\threestars{6}{3}{0}
-\end{hintlist}
-
 \begin{solution}
 	Black's last move was from F2, where his king was in double-check from both a rook and a knight.
 	How did this happen?
@@ -217,13 +169,12 @@ White to move. Which side of the board did each color start on? \par
 
 % Arabian Knights 4
 \problem{A missing piece}
-%\difficulty{4}{5}
-\startimes{20}
+\difficulty{4}{5}
+
 
 There is a piece at G4, marked with a $\odot$. \par
 What is it, and what is its color? \par
 
-
 \manyboards{
 	ra8,ke8,rh8,
 	pc7,pd7,
@@ -236,44 +187,6 @@ What is it, and what is its color? \par
 }
 
 
-\begin{hintlist}
-	Part 1: \tab\threestars{0}{2}{18} \par
-	\hintcontent{
-		What color is the missing piece? Count captures.\par
-		Look at the region bounded by A1 and B3. How did the bishop get there?
-	}
-
-	Part 2: \tab\threestars{2}{2}{16} \par
-	\hintcontent{
-		What was White's last move? \par
-		What does this tell us about White's king?
-	}
-
-	Part 3: \tab\threestars{4}{4}{12} \par
-	\hintcontent{
-		Now, look at the region bounded by G1 and H3. \par
-		In Part 1, we found that all of White's pieces were captured---including the H1 rook. \par
-		How did it get off its home square to be captured? \par
-		What does this tell us about the bishop on H1?
-	}
-
-	Part 4: \tab\threestars{8}{3}{9} \par
-	\hintcontent{
-		The black bishop on H2 must have been promoted on G1. \par
-		Which pawn was it, and how did it get there? (Remember, we counted captures in Part 1). \par
-		In what order did the cross capture by the G1 and H1 pawns occur?
-	}
-
-	Part 5: \tab\threestars{11}{2}{7} \par
-	\hintcontent{
-		Which black pieces are still missing? \par
-		Remember that White cannot castle through check.
-	}
-
-	\vspace{2mm}
-	Done: \tab\threestars{13}{7}{0}
-\end{hintlist}
-
 \makeatletter
 \if@solutions
 	\vfill
@@ -281,6 +194,7 @@ What is it, and what is its color? \par
 \fi
 \makeatother
 
+
 \begin{solution}
 	\textbf{Part 1:}