Fix typos

Advanced/Retrograde Analysis/parts/02 easy.tex

@@ -12,11 +12,13 @@ What was Black's last move, and what was White's last move? \par
 	There a few empty boards at the end of this handout as well.
 }
 
+% spell:off
 \manyboards{
 	ka8,Kc8,
 	Ph2,
 	Bg1
 }
+% spell:on
 
 \begin{solution}
 	It's pretty clear that Black just moved out of check from A7.
@@ -59,12 +61,14 @@ In the game below, no pieces have moved from a black square to a white square, o
 There is a pawn at G3. What color is it? \par
 As before, White started on the bottom of the board.
 
+% spell:off
 \manyboards{
 	ke8,
 	Kb4,
 	Ug3,
 	Pd2,Pf2
 }
+% spell:on
 
 \begin{solution}
 	The white king is the key to this solution. How did it get off of E1? \par
@@ -99,11 +103,13 @@ As before, White started on the bottom of the board.
 The black king has turned himself invisible. Unfortunately, his position is hopeless. \par
 Mate the king in one move. \par
 
+% spell:off
 \manyboards{
 	Ra8,rb8,Kf8,
 	Nb7,Pc7,
 	Pa6,Rc6
 }
+% spell:on
 
 \begin{solution}
 	Since it is White's move, Black cannot be in check. \par
@@ -132,11 +138,13 @@ Mate the king in one move. \par
 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 one more piece on the board, which isn't shown. What color square does it stand on? \par
 
+% spell:off
 \manyboards{
 	ke8,
 	Pd2,Pf2,
 	Ke1
 }
+% spell:on
 
 \begin{solution}
 
@@ -161,11 +169,13 @@ In the game below, no pieces have moved from a black square to a white square, o
 The white king has made less than fourteen moves. \par
 Use this information to show that a pawn was promoted. \par
 
+% spell:off
 \manyboards{
 	ke8,
 	Pb2,Pd2,
 	Ke1
 }
+% spell:on
 
 \begin{solution}
 	Knights always move to a different colored square, so all four missing knights must have been captured on their home square.
@@ -196,10 +206,12 @@ Use this information to show that a pawn was promoted. \par
 
 It is White's move. Have there been any promotions this game? \par
 
+% spell:off
 \manyboards{
 	Pb2,Pe2,kf2,Pg2,Ph2,
 	Bc1,Kd1,Rh1
 }
+% spell:on
 
 \begin{solution}
 
@@ -231,6 +243,7 @@ It is White's move. Have there been any promotions this game? \par
 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.}
 
+% spell:off
 \manyboards{
 	ra8,bc8,ke8,rh8,
 	pa7,pc7,pe7,pg7,
@@ -239,6 +252,7 @@ It is Black's move. Can Black castle? \par
 	Pb2,Pc2,Pd2,Pe2,Pf2,Pg2,Ph2,
 	Bc1,Qd1,Ke1,Bf1
 }
+% spell:on
 
 \begin{solution}
 	White's last move was with the pawn. \par

Advanced/Retrograde Analysis/parts/03 medium.tex

@@ -7,6 +7,8 @@
 
 The results of a game of chess are shown below. \par
 Did White start on the north or south side of the board? \par
+
+% spell:off
 \manyboards{
 	ka8,Kc8,
 	Qe7,
@@ -15,6 +17,7 @@ Did White start on the north or south side of the board? \par
 	Ph3,
 	Bh1
 }
+% spell:on
 
 \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.
@@ -52,11 +55,13 @@ Did White start on the north or south side of the board? \par
 The white king has again become invisible. Find him. \par
 \hint{White started on the bottom. En passant.} \par
 
+% spell:off
 \manyboards{
 	rb5,bd5,
 	Ba4,
 	kd1
 }
+% spell:on
 
 
 \begin{solution}
@@ -77,6 +82,7 @@ The white king has again become invisible. Find him. \par
 
 	\begin{minipage}{0.5\linewidth}
 		\begin{center}
+			% spell:off
 			\chessboard[
 				setpieces = {
 					rb5,
@@ -86,6 +92,7 @@ The white king has again become invisible. Find him. \par
 					kd1
 				}
 			]
+			% spell:on
 		\end{center}
 	\end{minipage}
 	\hfill
@@ -123,11 +130,13 @@ The white king has again become invisible. Find him. \par
 White to move. Which side of the board did each color start on? \par
 \hint{What was Black's last move? }
 
+% spell:off
 \manyboards{
 	Re3,
 	Nc2,Rd2,
 	Nd1,kf1,Kh1
 }
+% spell:on
 
 \begin{solution}
 	Black's last move was from F2, where his king was in double-check from both a rook and a knight.
@@ -175,6 +184,7 @@ White to move. Which side of the board did each color start on? \par
 There is a piece at G4, marked with a $\odot$. \par
 What is it, and what is its color? \par
 
+% spell:off
 \manyboards{
 	ra8,ke8,rh8,
 	pc7,pd7,
@@ -185,6 +195,7 @@ What is it, and what is its color? \par
 	ba2,Pb2,Pc2,Pd2,Pf2,qg2,bh2,
 	Kc1,Rd1,nf1,Bh1
 }
+% spell:on
 
 
 \makeatletter

Advanced/Retrograde Analysis/parts/04 hard.tex

@@ -7,6 +7,7 @@
 There is a white castle hidden on this board. Where is it? \par
 None of the royalty has moved or been under attack. \par
 
+% spell:off
 \manyboards{
 	nb8,qd8,ke8,ng8,rh8,
 	pa7,pb7,pc7,pf7,pg7,
@@ -16,6 +17,7 @@ None of the royalty has moved or been under attack. \par
 	Pb2,Pd2,Pf2,Pg2,
 	Qd1,Ke1
 }
+% spell:on
 
 \begin{solution}
 	See \say{The Hidden Castle} in \textit{The Chess Mysteries of the Arabian Knights}.
@@ -33,6 +35,7 @@ None of the royalty has moved or been under attack. \par
 After many moves of chess, the board looks as follows. \par
 Who moved last? \par
 
+% spell:off
 \manyboards{
 	ka8,Kc8,bf8,rh8,
 	pb7,pc7,pf7,pg7,
@@ -41,6 +44,7 @@ Who moved last? \par
 	Pa2,Pb2,Pd2,Pg2,Ph2,
 	Ra1,Nb1,Bc1,Qd1,Rh1
 }
+% spell:on
 
 \begin{solution}
 	See \say{A Vital Decision} in \textit{The Chess Mysteries of the Arabian Knights}.
@@ -59,6 +63,7 @@ Who moved last? \par
 The white king is exploring his kingdom under a disguise. He could look like any piece of any color.\par
 Show that he must be on C7.
 
+% spell:off
 \manyboards{
 	qa8,nb8,be8,Qg8,kh8,
 	pa7,Pb7,pc7,Nd7,pe7,Pf7,ph7,
@@ -66,6 +71,7 @@ Show that he must be on C7.
 	ra5,pb5,Rd5,Ph5,
 	Pa4,Nc4,Pe4,Bg4
 }
+% spell:on
 
 \begin{solution}
 	Black is in check, so we know that it is Black's move and White is not in check.\par
@@ -118,6 +124,7 @@ Show that he must be on C7.
 The white king is again exploring his kingdom, now under a different disguise. Where is he? \par
 \hint{\say{different disguise} implies that the white king looks like a different piece!}
 
+% spell:off
 \manyboards{
 	nb8,be8,Qg8,kh8,
 	pa7,Pb7,pc7,Nd7,pe7,Pf7,ph7,
@@ -125,6 +132,7 @@ The white king is again exploring his kingdom, now under a different disguise. W
 	ra5,pb5,Rd5,Ph5,
 	Pa4,Nc4,Pe4,Bg4
 }
+% spell:on
 
 \begin{solution}
 	Use the same arguments as before, but now assume that the king isn't a black pawn.