Updated chapters 1 and 2

sudoku.tex

@@ -17,31 +17,19 @@
 
 
 % Delete any of the following that are not needed
-\usepackage{amsmath}
-\usepackage{amssymb}
-\usepackage{makeidx}
-\usepackage{graphicx}
-\usepackage{array}
-\usepackage{multirow}
-\usepackage{gensymb} % Just for the degree symbol
-\usepackage{ccicons} % Creative Commons icons; now we can delete an image
 \usepackage{lettrine} % Drop caps
 \usepackage{wrapfig} % Let's wrap some images
-\usepackage{hanging} % For hanging indents in a script
-\usepackage{fancyvrb} % Use line numbers with code samples
-\usepackage{fvextra} % Break lines inside Verbatim environment:
 \usepackage{enumitem} % Control spacing in lists
 \usepackage{setspace} % Better control over line-spacing
 \usepackage{nicefrac} % Use nice fractions
 \usepackage[bottom]{footmisc} % Keep the footnotes at the bottom of the page
-%\usepackage{tabto} % Use tab stops when we need to (especially in footnotes)
 \usepackage{microtype} % Make things neater. 
 \usepackage{tabularray} % Easy tables
 \usepackage[]{footmisc}
 \usepackage{tikz}
 \usetikzlibrary{calc}
 \usepackage{ninecolors}
-
+\usepackage{lipsum}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Commands %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -63,7 +51,6 @@
 	margin=15mm,
 %	a5paper % Comment out for half-letter paper
 }
-
 \addtolength{\topmargin}{10mm} % Adjust and bottom margin
 \addtolength{\textheight}{-20mm} % Adjust the bottom margin
 
@@ -103,12 +90,12 @@
 % Make hrefs easier (must load package hyperref}
 \newcommand\kref[2]{\href{#1}{{\texttt{#2}}}}
 
-% Rotate text in tables easier
-% https://tex.stackexchange.com/questions/89115/how-to-rotate-text-in-multirow-table
-\newcommand\krot[3]{\parbox[t]{#1}{\multirow{#2}{*}{\rotatebox[origin=c]{90}{#3}}}}
 
-% Draw a sudoku grid
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\newcommand{\kgrid}{
+%% Custom Macros %%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% Draw a sudoku grid with labels
+\newcommand{\kgridl}{
 % Thick horizontal lines
 	\draw [ultra thick](0,0)--(9,0);
 	\draw [ultra thick](0,3)--(9,3);
@@ -134,7 +121,7 @@
 	\draw (7,0)--(7,9);
 	\draw (8,0)--(8,9);
 % Labels
-	\begin{scriptsize}
+	\begin{footnotesize}
 	\node at (-0.5,0.5) {R1};
 	\node at (-0.5,1.5) {R2};
 	\node at (-0.5,2.5) {R3};
@@ -153,18 +140,47 @@
 	\node at (6.5,-0.5) {C7};
 	\node at (7.5,-0.5) {C8};
 	\node at (8.5,-0.5) {C9};
-	\end{scriptsize}
+	\end{footnotesize}
+}
+
+% Draw a sudoku grid without labels
+\newcommand{\kgrid}{
+% Thick horizontal lines
+	\draw [ultra thick](0,0)--(9,0);
+	\draw [ultra thick](0,3)--(9,3);
+	\draw [ultra thick](0,6)--(9,6);
+	\draw [ultra thick](0,9)--(9,9);
+% Thick vertical lines
+	\draw [ultra thick](0,0)--(0,9);
+	\draw [ultra thick](3,0)--(3,9);
+	\draw [ultra thick](6,0)--(6,9);
+	\draw [ultra thick](9,0)--(9,9);
+% Thin horizontal lines
+	\draw (0,1)--(9,1);
+	\draw (0,2)--(9,2);
+	\draw (0,4)--(9,4);
+	\draw (0,5)--(9,5);
+	\draw (0,7)--(9,7);
+	\draw (0,8)--(9,8);
+% Thin vertical lines
+	\draw (1,0)--(1,9);
+	\draw (2,0)--(2,9);
+	\draw (4,0)--(4,9);
+	\draw (5,0)--(5,9);
+	\draw (7,0)--(7,9);
+	\draw (8,0)--(8,9);
 }
 
 % Sudoku nodes
-\newcommand{\knode}[3]{\node at (#1,#2) {#3};}
+\newcommand{\knode}[3]{\node at ($(#1-0.5,#2-0.5)$) {#3};}
 
 % Sudoku fills
 \newcommand{\kfill}[3]{\draw [fill=gray#3, line width=0mm] (#1,#2) rectangle +(1,1);}
 
-
+% Sudoku markers
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newcommand{\kfirst}[2]{\fill [red5] ($(#1 - 0.2,#2 - 0.2)$) circle (0.75pt);}
-%% Just for Issue #006 %%%%%%%%%%%%%%%%%%%%%%
+\newcommand{\ksecond}[2]{\fill [red5] ($(#1 - 0.2,#2 - 0.2)$) circle (0.75pt);\fill [red5] ($(#1 - 0.8,#2 - 0.2)$) circle (0.75pt);}
+\newcommand{\kguess}[2]{\fill [red5] ($(#1 - 0.8,#2 - 0.8)$) circle (0.75pt);}
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -211,11 +227,11 @@ If you want to donate financial support for the creation of this zine (and all t
 
 \chapter{What Is Sudoku?}
 
-Tikz grid example:
+\lettrine[loversize=0.5,nindent=-0.2mm]{S}{udoku} is a number-placement game played on a 9x9 grid for a total of 81 individual cells, with that main grid broken up into 9 subgrids of 9 cells each, as shown in figure \ref{subgrids}. The goal is to enter the numbers 1 through 9 into each cell such that each row, each column, and each subgrid contains each number only once. See figure \ref{fullgrid} for an example with rows and columns labeled.
 
-\noindent{}\begin{tikzpicture}[x=5mm,y=5mm]
+\begin{wrapfigure}{O}{0.45\textwidth}
-% Fills (must go first to put behind the grid)
+\centering
-	\path [fill=gray8, line width=0mm] (6,7) -- (7,7) -- (7,8) -- (6,8);
+\begin{tikzpicture}[x=5mm,y=5mm]
 % Thick horizontal lines
     \draw [ultra thick](0,0)--(9,0);
     \draw [ultra thick](0,3)--(9,3);
@@ -226,47 +242,45 @@ Tikz grid example:
     \draw [ultra thick](3,0)--(3,9);
     \draw [ultra thick](6,0)--(6,9);
     \draw [ultra thick](9,0)--(9,9);
-% Thin horizontal lines
-	\draw (0,1)--(9,1);
-	\draw (0,2)--(9,2);
-	\draw (0,4)--(9,4);
-	\draw (0,5)--(9,5);
-	\draw (0,7)--(9,7);
-	\draw (0,8)--(9,8);
-% Thin vertical lines
-	\draw (1,0)--(1,9);
-	\draw (2,0)--(2,9);
-	\draw (4,0)--(4,9);
-	\draw (5,0)--(5,9);
-	\draw (7,0)--(7,9);
-	\draw (8,0)--(8,9);
-% Nodes
-	\node at (0.5,7.5) {6};
-	\node at (1.5,7.5) {1};
-	\node at (4.5,7.5) {3};
-	\node at (7.5,8.5) {9};
-	\node at (8.5,8.5) {5};
-	\node at (5.5,8.5) {2};
 \end{tikzpicture}
-
+\caption[]{A sudoku grid showing only the subgrids.}
-\begin{wrapfigure}{R}{0.6\textwidth}
+\label{subgrids}
-\begin{tikzpicture}[x=5mm,y=5mm]
-\kfill{6}{7}{8}
-\kgrid
-\knode{0.5}{7.5}{6}
-\knode{1.5}{7.5}{1}
-\knode{4.5}{7.5}{3}
-\knode{6.5}{1.5}{7}
-\knode{6.5}{4.5}{4}
-\knode{7.5}{8.5}{9}
-\knode{8.5}{6.5}{2}
-\knode{8.5}{8.5}{5}
-\end{tikzpicture}
-\caption{Grid A}
 \end{wrapfigure}
 
+Sudoku puzzles have anywhere from a few to many of the cells filled in with numbers. Those puzzles with more cells filled in are generally easier to complete than those with only a few cells filled in.
+
+Number puzzles of this type have been around for a long time, with one of the earliest appearing in 1892 in the French newspaper \textit{Le Siècle}, which was a partially completed 9x9 magic square\footnote{A square array of numbers in which the sum of numbers in each row, column, and both diagonals add up to the same number.}
+
+Despite the Japanese name (which translates roughly as ``digit-single'' or ``number-unique''), the modern sudoku puzzle is apparently an American invention, first appearing the May 1979 issue of \textit{Dell Pencil Puzzles \& Word Games} as ``Number Place''. It is apparently the work of a retired architect named Howard Garns, although the evidence is somewhat circumstantial: Garns appeared in the list of contributors in each issue that did contain a ``Number Place'' puzzle, but did not appear in the list of contributors in issues that did \textit{not} contain a ``Number Place'' puzzle.\footnote{See \kref{https://www.mathpuzzle.com/MAA/41-Sudoku Variations/mathgames_09_05_05.html}{https://www.mathpuzzle.com/MAA/41-Sudoku\%20Variations/mathgames\_09\\\_05\_05.html} for more information, which also contains more information on sudoku variations.}
+
+\begin{wrapfigure}{O}{0.5\textwidth}
+\centering
+\begin{tikzpicture}[x=5mm,y=5mm]
+\kgridl
+\end{tikzpicture}
+\caption[]{A full 9x9 sudoku grid with columns and rows labeled.}
+\label{fullgrid}
+\end{wrapfigure}
+
+It was later imitated in the 1980's by the Japanese publisher Nikoli who introduced two small improvements: the number of clues was limited to 32, and the clues were distributed in a rotationally symmetric way, meaning that the clues were more evenly distributed across the grid.
+
+In 1997, Wayne Gould, a retired judge from New Zealand who had moved to Hong Kong spotted the puzzles in a Japanese bookshop and then spent the next six years developing a computer program to create sudoku puzzles, and started selling them local newspapers and eventually to the London \textit{Times}. He also publishes them from his own website at \kref{https://sudoku.com/}{https://sudoku.com/}.\footnote{See \kref{https://www.theguardian.com/media/2005/may/15/pressandpublishing.usnews}{https://www.theguardian.com/media/2005/may/15/pressandpublishing.u\\snews} for more information.}
+
+
 \chapter{The Rules of Sudoku}
 
+\lettrine[loversize=0.5,nindent=-0.2mm]{T}{he} rules of sudoku are both few and simple:
+
+\begin{enumerate}[noitemsep]
+\item Sudoku is played on a 9x9 grid.
+\item You can only use the numbers 1 through 9.
+\item Each vertical column can only contain the numbers 1 through 9, with no number being used more than once.
+\item Each horizontal row can only contain the numbers 1 through 9, with no number being used more than once.
+\item Each 3x3 subgrid can only contain the numbers 1 through 9, with no number being used more than once.
+\end{enumerate}
+
+Winning is simple: you win when you have filled in the entire 9x9 grid according to the rules above.
+
 \chapter{Troubleshooting}