diff --git a/Advanced/Retrograde Analysis/main.tex b/Advanced/Retrograde Analysis/main.tex
index bfcbb5c..84cba44 100755
--- a/Advanced/Retrograde Analysis/main.tex	
+++ b/Advanced/Retrograde Analysis/main.tex	
@@ -13,34 +13,19 @@
 \usepackage{afterpage}
 \usepackage[hang]{footmisc}
 
-% A row of stars, for showing difficulty
-% first arg: filled stars
-% second arg: total stars
-\def\liststars#1#2{%
-	\def\oncolor{\color{ogrape}}%
-	\def\offcolor{\color{white}}%
-	%
-	\count255=1%
-	\count254=#2%
-	\advance\count254 by -1%
-	\ifnum #1 > 0
-		% The $$ are required around \bigstar.
-		% the special \odot chess piece breaks
-		% star sizing if they are ommited.
-		\loop
-			{\oncolor $\bigstar$}%
-		\ifnum\count255 < #1
-		\advance\count255 by 1
-		\repeat%
-	\else%
-		{\oncolor $\bigstar$}%
-	\fi%
-	%
-	\ifnum \count255 < #2%
-		\loop
-			{\offcolor $\bigstar$}%
-		\ifnum\count255 < \count254
-		\advance\count255 by 1
+% Modify default tab positions for better stars
+\TabPositions{1.2cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm}
+
+
+\def\nstars#1#2{%
+	\ifnum #2 > 0%
+		\def\starcolor{\color{#1}}%
+		\count255=1%
+		\loop{%
+			\starcolor $\bigstar$%
+		}%
+		\ifnum \count255 < #2%
+		\advance\count255 by 1%
 		\repeat%
 	\fi%
 }
@@ -102,16 +87,41 @@ $\odot$}}
 	\fi
 }
 
-\@makeORMCbox{hintlist}
-	{Available Hints}
+\@makeORMCbox{@hintlist}
+	{Score Decomposition:}
 	{black!12!white}
 	{black!80!white}
 
+\newenvironment{hintlist}{
+	\begin{@hintlist}
+}{
+	% Remove vspace from the last \hintcontent
+	\if@solutions\vspace{-2mm}\fi
+	\end{@hintlist}
+}
+
+
+\def\threestars#1#2#3{
+	\nstars{white}{#1}\nstars{ogrape}{#2}\nstars{white}{#3}
+}
+
+\def\onestars#1{
+	\nstars{ogrape}{#1}
+}
+
+\long\def\hintcontentnew#1{
+	\if@solutions
+		#1 \par
+		\vspace{2mm}
+	\fi
+}
+
 \long\def\hintcontent#1#2#3{
 	\if@solutions
-		\liststars{#1}{#2} \par #3
+		\nstars{white}{#1}\nstars{ogrape}{#2} \par #3
+		\vspace{2mm}
 	\else
-		\liststars{#1}{#2}
+		\nstars{white}{#1}\nstars{ogrape}{#2}
 	\fi\par
 }
 \makeatother
diff --git a/Advanced/Retrograde Analysis/parts/00 rules.tex b/Advanced/Retrograde Analysis/parts/00 rules.tex
index 48f2b17..42e50c3 100644
--- a/Advanced/Retrograde Analysis/parts/00 rules.tex	
+++ b/Advanced/Retrograde Analysis/parts/00 rules.tex	
@@ -1,51 +1,49 @@
 \section{Rules}
 
 This handout contains a set of problems. \par
-Each is marked with a few gold stars, which you collect by presenting a solution.
-
-\vspace{2mm}
-
-Below each problem is a list of hints, written next to their cost. \par
-To get a hint, you must pay the marked number of stars. \par
-Hints are usually provided in order, and are the same for all groups. \par
-
-\vspace{2mm}
-
-There is one exception: instructors may offer certain hints for a reduced fee,
-judging by your explanation of what you have so far.
-
-\begin{instructornote}
-    This exception is for groups that are stuck on the last bit of a problem. \par
-    If they've solved most of it, give them the information they already know
-    for a steep discount (or even for free).
-\end{instructornote}
-
-
-
-An example problem is below.
+Each is marked with a few stars, which you collect by presenting solutions. \par
+An example is below.
 
 \vspace{4mm}
 
 \generic{Problem $0$:}
 \starvalue{4}
 
-This is a problem that's worth four points. \par
-Two hints are available. The first costs two stars (of the four available). \par
-The second costs one of the two stars available \textit{after} revealing the first hint.
+This is a problem that has two parts. \par
+If you solve the problem on your own, your team gets four points. \par
+
+\vspace{2mm}
+
+There are two ways you can ask for assistance: \par
+\begin{itemize}[itemsep=1mm]
+	\item First, you may uncover a hint to a part for $\lceil 0.5 \times \text{that part's value} \rceil$ stars. \par
+	In this problem, the hints for both part 1 and 2 cost 1 star each. \par
+	These are always provided in order---you must solve or uncover part 1 to get a hint for part 2.
+
+	\item You may also ask an instructor to check the work you have thus far. \par
+	By doing this, you will earn stars for all parts you no longer need a hint for.
+\end{itemize}
+
 
 \begin{hintlist}
-    Hint 1:
-    \hintcontent{2}{4}{This is a hint. Only instructors see this.}
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{
+		This is a hint. Only instructors see this.
+	}
 
-    Hint 2:
-    \hintcontent{1}{2}{This is another hint.}
+	Part 2: \tab\threestars{1}{2}{1} \par
+	\hintcontentnew{
+		This is another hint.
+	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{3}{1}{0}
 \end{hintlist}
 
-\vfill
-
-You may notice that hints often cost a significant fraction of their problem's score. \par
-This is intentional---don't ask for hints unless you're very, very stuck.
+\vspace{1cm}
 
+Each \say{part} corresponds to one hint in the instructor's handout. \par
+(\say{Done} is not a hint, it is simply a bonus for completing the problem).
 
 
 
diff --git a/Advanced/Retrograde Analysis/parts/02 easy.tex b/Advanced/Retrograde Analysis/parts/02 easy.tex
index e47d7f8..6031da7 100644
--- a/Advanced/Retrograde Analysis/parts/02 easy.tex	
+++ b/Advanced/Retrograde Analysis/parts/02 easy.tex	
@@ -17,11 +17,18 @@ What was Black's last move, and what was White's last move? \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{3}{What was Black's last move? What White do to make this happen?}
+	Part 1: \tab\threestars{0}{1}{2} \par
+	\hintcontentnew{
+		What was Black's last move? What White do to make this happen?
+	}
 
-	Hint 2:
-	\hintcontent{1}{2}{White uncovered a check. What piece did Black capture?}
+	Part 2: \tab\threestars{1}{1}{1} \par
+	\hintcontentnew{
+		White uncovered a check. What piece did Black capture?
+	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{2}{1}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -55,13 +62,15 @@ What was Black's last move, and what was White's last move? \par
 
 
 
+
+
 % Sherlock, Which color?
 \problem{Which color?}
 %\difficulty{2}{5}
 \starvalue{4}
 In the game below, no pieces have moved from a black square to a white square, or from a white square to a black square.
 There is a pawn at G3. What color is it? \par
-\hint{Again, White started on the bottom.}
+As before, White started on the bottom of the board.
 
 \manyboards{
 	ke8,
@@ -70,14 +79,20 @@ There is a pawn at G3. What color is it? \par
 	Pd2,Pf2
 }
 
-\begin{hintlist}
-	Hint 1:
-	\hintcontent{2}{4}{How did the white king get off E1? It must have castled!}
 
-	Hint 2:
-	\hintcontent{1}{2}{
+\begin{hintlist}
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{
+		How did the white king get off E1? It must have castled!
+	}
+
+	Part 2: \tab\threestars{1}{1}{2} \par
+	\hintcontentnew{
 		It castled kingside (how do we know?). Now, how did it get off G1?
 	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{2}{2}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -121,11 +136,11 @@ Mate the king in one move. \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{4}{Do you need to know \textit{exactly} where the black king is?}
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{Don't forget about promotion.}
 
-	Hint 2:
-	\hintcontent{1}{3}{Don't forget about promotion.}
+	\vspace{2mm}
+	Done: \tab\threestars{1}{3}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -161,11 +176,16 @@ There is one more piece on the board, which isn't shown. What color square does
 	Ke1
 }
 
+
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{4}{Which piece performed the last capture?}
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{Which piece performed the last capture on a black square?}
+
+	\vspace{2mm}
+	Done: \tab\threestars{1}{3}{0}
 \end{hintlist}
 
+
 \begin{solution}
 
 	Which piece performed the last capture on a black square? It couldn't have been a white pawn, which haven't moved.
@@ -184,7 +204,7 @@ There is one more piece on the board, which isn't shown. What color square does
 % Sherlock, another monochromatic
 \problem{The knight's grave}
 %\difficulty{3}{5}
-\starvalue{5}
+\starvalue{4}
 In the game below, no pieces have moved from a black square to a white square, or from a white square to a black square.
 The white king has made less than fourteen moves. \par
 Use this information to show that a pawn was promoted. \par
@@ -196,17 +216,12 @@ Use this information to show that a pawn was promoted. \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{5}{
-		\par
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{
 		Who took the knights? Only one of them is interesting---most are easy to account for.
-		\vspace{2mm}
 	}
-
-
-	Hint 2:
-	\hintcontent{2}{4}{We can easily account for the white knights and the
-	black knight on G8. Which white pieces can move to capture the black knight on B8?}
+	\vspace{2mm}
+	Done: \tab\threestars{1}{3}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -244,13 +259,17 @@ It is White's move. Have there been any promotions this game? \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{3}{6}{
+	Part 1: \tab\threestars{0}{4}{2} \par
+	\hintcontentnew{
 		The black king must have moved from F1. (Why not G1?) \par
 		This would be impossible if something hadn't blocked check from the white rook.
 	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{4}{2}{0}
 \end{hintlist}
 
+
 \begin{solution}
 
 	Since it is White's move, Black has just moved his king. Where did he move it from?
@@ -277,7 +296,7 @@ It is White's move. Have there been any promotions this game? \par
 % Sherlock Holmes, two bagatelles (1)
 \problem{Whodunit}
 %\difficulty{2}{5}
-\starvalue{5}
+\starvalue{6}
 
 It is Black's move. Can Black castle? \par
 \hint{Remember the rules of chess: you may not castle if you've moved your rook.}
@@ -292,13 +311,17 @@ It is Black's move. Can Black castle? \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{5}{
+	Part 1: \tab\threestars{0}{4}{2} \par
+	\hintcontentnew{
 		Black captured a knight on his last move. \par
 		Why do we know this, and how did he do it?
 	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{4}{2}{0}
 \end{hintlist}
 
+
 \begin{solution}
 	White's last move was with the pawn. \par
 	Black's last move must have been to capture the white piece which moved before that.
@@ -324,6 +347,14 @@ It is Black's move. Can Black castle? \par
 \pagebreak
 
 
+
+
+
+
+
+
+
+
 % Sherlock Holmes, two bagatelles (2)
 \problem{Castle contradiction}
 %\difficulty{2}{5}
@@ -341,12 +372,20 @@ It is Black's move. Can he castle? \par
 	bd1,Rf1,Kg1
 }
 
+
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{2}{7}{If White moved his king, Black cannot castle. Why? \par
-	That's the simple case. The other option: White castled. What did Black do before that?}
+	Part 1: \tab\threestars{0}{4}{3} \par
+	\hintcontentnew{
+		If White moved his king, Black cannot castle. Why? \par
+		That's the simple case. The other option: White castled. What did Black do before that?
+		(Also, there was a promotion in this case.)
+	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{4}{3}{0}
 \end{hintlist}
 
+
 \begin{solution}
 	If White's last move was with the king, then the black rook moved to check him and Black can't castle.
 
@@ -370,6 +409,15 @@ It is Black's move. Can he castle? \par
 
 
 
+
+
+
+
+
+
+
+
+
 % Arabian Knights, intro (given with solution)
 \problem{A matter of order}
 %\difficulty{3}{5}
@@ -392,33 +440,35 @@ Which bishop was it, and what did it capture? \par
 
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{8}{
+	Part 1: \tab\threestars{0}{1}{7} \par
+	\hintcontentnew{
 		\begin{itemize}
 			\item How many pieces are missing? Where were the missing ones captured?
 			\item How did those pieces get to the place they were captured?
 		\end{itemize}
-		\vspace{2mm}
 	}
 
-	Hint 2:
-	\hintcontent{2}{7}{
+	Part 2: \tab\threestars{1}{2}{5} \par
+	\hintcontentnew{
 		\begin{itemize}
 			\item The pawn on C3 came from D2, capturing a black rook.
 			\item The black rook it captured couldn't have moved there before...
 		\end{itemize}
-		\vspace{2mm}
 	}
 
-	Hint 3:
-	\hintcontent{1}{4}{
+	Part 3: \tab\threestars{3}{2}{3} \par
+	\hintcontentnew{
 		\begin{itemize}
 			\item ...the black pawn on G7 captured a white piece on H6.
 			\item What else is missing?
 		\end{itemize}
 	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{5}{3}{0}
 \end{hintlist}
 
+
 \begin{solution}
 	First, notice that the pawn on C3 came from D2 by capturing a piece. \par
 	This must have been a black rook, which is the only missing black piece.
diff --git a/Advanced/Retrograde Analysis/parts/03 medium.tex b/Advanced/Retrograde Analysis/parts/03 medium.tex
index 3a9b3dd..202a462 100644
--- a/Advanced/Retrograde Analysis/parts/03 medium.tex	
+++ b/Advanced/Retrograde Analysis/parts/03 medium.tex	
@@ -3,7 +3,7 @@
 % Sherlock, A matter of direction
 \problem{A matter of direction}
 %\difficulty{3}{5}
-\starvalue{5}
+\starvalue{4}
 
 The results of a game of chess are shown below. \par
 Did White start on the north or south side of the board? \par
@@ -17,8 +17,12 @@ Did White start on the north or south side of the board? \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{2}{5}{The bishop on H1 is important. How did White deliver this check?}
+	Part 1: \tab\threestars{0}{1}{3} \par
+	\hintcontentnew{
+		The bishop on H1 is important. How did White deliver this check?
+	}
+	\vspace{2mm}
+	Done: \tab\threestars{1}{3}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -65,21 +69,23 @@ The white king has again become invisible. Find him. \par
 
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{3}{8}{
+	Part 1: \tab\threestars{0}{2}{6} \par
+	\hintcontentnew{
 		Either the white king is on B3, or Black is in check. \par
 		First, show that the latter implies the former.
-		\vspace{2mm}
 	}
 
-	Hint 2:
-	\hintcontent{2}{5}{
+	Part 2: \tab\threestars{2}{2}{4} \par
+	\hintcontentnew{
 		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}
 	}
+
+	\vspace{2mm}
+	Done: \tab\threestars{4}{4}{0}
 \end{hintlist}
 
+
 \makeatletter
 \if@solutions
 	\vfill
@@ -158,12 +164,15 @@ White to move. Which side of the board did each color start on? \par
 }
 
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{4}{10}{
+	Part 1: \tab\threestars{0}{5}{5} \par
+	\hintcontentnew{
 		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{5}{5}{0}
 \end{hintlist}
 
 \begin{solution}
@@ -223,68 +232,46 @@ What is it, and what is its color? \par
 	Kc1,Rd1,nf1,Bh1
 }
 
+
 \begin{hintlist}
-	Hint 1:
-	\hintcontent{1}{20}{
+	Part 1: \tab\threestars{0}{1}{19} \par
+	\hintcontentnew{
 		What color is the missing piece? Count captures.\par
-		Look at the region bounded by A1 and B3. How did the bishop get there? \par
-		\note[Note]{This is Part 1}
-		\vspace{2mm}
+		Look at the region bounded by A1 and B3. How did the bishop get there?
 	}
 
-	
-	Hint 2:
-	\hintcontent{1}{19}{
+	Part 2: \tab\threestars{1}{1}{18} \par
+	\hintcontentnew{
 		What was White's last move? \par
-		What does this tell us about White's king? \par
-		\note[Note]{This is Part 2}
-		\vspace{2mm}
+		What does this tell us about White's king?
 	}
-	
-	Hint 3:
-	\hintcontent{1}{18}{
+
+	Part 3: \tab\threestars{2}{1}{17} \par
+	\hintcontentnew{
 		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? \par
-		\note[Note]{This is Part 3}
-		\vspace{2mm}
-	}
-	
-	Hint 4:
-	\hintcontent{1}{17}{
-		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? \par
-		\note[Note]{This is Part 4}
-		\vspace{2mm}
+		What does this tell us about the bishop on H1?
 	}
 
-	Hint 5:
-	\hintcontent{5}{16}{
+	Part 4: \tab\threestars{3}{2}{15} \par
+	\hintcontentnew{
+		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{5}{2}{13} \par
+	\hintcontentnew{
 		Which black pieces are still missing? \par
 		Remember that White cannot castle through check.
 	}
 
-
+	\vspace{2mm}
+	Done: \tab\threestars{7}{13}{0}
 \end{hintlist}
 
 
-%\begin{instructornote}
-%	\textbf{Hints to give:} (in this order)
-%	\begin{itemize}
-%		\item How did the black bishop on A2 get there? \note{(Part 1)}
-%		\item How many captures has Black made? \note{(Part 1)}
-%		\item What color is the missing piece? \note{(Part 1)}
-%		\item What was White's last move? What does this imply? \note{(Part 2)}
-%		\item Which white pieces were captured? \par
-%			How did they move from their starting positions? \note{(Part 3)}
-%		\item How did the bishop on H2 get to where it is now? \note{(Part 3)}
-%		\item Which pawn was promoted to the bishop now on H2? \note{(Part 4)}
-%		\item Which black pieces are still missing? \note{(Conclusion)}
-%		\item Remember that White cannot castle through check. \note{(Conclusion)}
-%	\end{itemize}
-%\end{instructornote}
 
 \vfill
 \pagebreak