Edit and compile if you like:
% Sudoku % Author: Roberto Bonvallet \documentclass{article} \usepackage[pdftex,active,tightpage]{preview} \usepackage{tikz} \usepackage{mathpazo} \PreviewEnvironment{tikzpicture} \newcounter{row} \newcounter{col} \newcommand\setrow[9]{ \setcounter{col}{1} \foreach \n in {#1, #2, #3, #4, #5, #6, #7, #8, #9} { \edef\x{\value{col} - 0.5} \edef\y{9.5 - \value{row}} \node[anchor=center] at (\x, \y) {\n}; \stepcounter{col} } \stepcounter{row} } \begin{document} \begin{tikzpicture}[scale=.5] \begin{scope} \draw (0, 0) grid (9, 9); \draw[very thick, scale=3] (0, 0) grid (3, 3); \setcounter{row}{1} \setrow { }{2}{ } {5}{ }{1} { }{9}{ } \setrow {8}{ }{ } {2}{ }{3} { }{ }{6} \setrow { }{3}{ } { }{6}{ } { }{7}{ } \setrow { }{ }{1} { }{ }{ } {6}{ }{ } \setrow {5}{4}{ } { }{ }{ } { }{1}{9} \setrow { }{ }{2} { }{ }{ } {7}{ }{ } \setrow { }{9}{ } { }{3}{ } { }{8}{ } \setrow {2}{ }{ } {8}{ }{4} { }{ }{7} \setrow { }{1}{ } {9}{ }{7} { }{6}{ } \node[anchor=center] at (4.5, -0.5) {Unsolved Sudoku}; \end{scope} \begin{scope}[xshift=12cm] \draw (0, 0) grid (9, 9); \draw[very thick, scale=3] (0, 0) grid (3, 3); \setcounter{row}{1} \setrow { }{2}{ } {5}{ }{1} { }{9}{ } \setrow {8}{ }{ } {2}{ }{3} { }{ }{6} \setrow { }{3}{ } { }{6}{ } { }{7}{ } \setrow { }{ }{1} { }{ }{ } {6}{ }{ } \setrow {5}{4}{ } { }{ }{ } { }{1}{9} \setrow { }{ }{2} { }{ }{ } {7}{ }{ } \setrow { }{9}{ } { }{3}{ } { }{8}{ } \setrow {2}{ }{ } {8}{ }{4} { }{ }{7} \setrow { }{1}{ } {9}{ }{7} { }{6}{ } \node[anchor=center] at (4.5, -0.5) {Solved Sudoku}; \begin{scope}[blue, font=\sffamily\slshape] \setcounter{row}{1} \setrow {4}{ }{6} { }{7}{ } {3}{ }{8} \setrow { }{5}{7} { }{9}{ } {1}{4}{ } \setrow {1}{ }{9} {4}{ }{8} {2}{ }{5} \setrow {9}{7}{ } {3}{8}{5} { }{2}{4} \setrow { }{ }{3} {7}{2}{6} {8}{ }{ } \setrow {6}{8}{ } {1}{4}{9} { }{5}{3} \setrow {7}{ }{4} {6}{ }{2} {5}{ }{1} \setrow { }{6}{5} { }{1}{ } {9}{3}{ } \setrow {3}{ }{8} { }{5}{ } {4}{ }{2} \end{scope} \end{scope} \end{tikzpicture} \end{document}
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