2D-Sudoku

The puzzle

Fill every row, every column and each of the two diagonals – if indicated – with numbers from 1 to SIZE of the grid. Here’s a little self-explanatory example:

#!latex

\begin{center}
  \begin{ddsudoku}
    \framepuzzle
    \filldiagonals[orange!50]
    \ddsudokucell{1}{5}{1}
    \ddsudokucell{1}{4}{3}
    \ddsudokucell{2}{3}{4}
    \ddsudokucell{4}{1}{3}
    \ddsudokucell{4}{3}{2}
    \ddsudokucell{5}{4}{4}
  \end{ddsudoku}
  \hspace{1,5cm}
  \begin{ddsudoku}
    \framepuzzle
    \filldiagonals[orange!50]
    \setrow{5}{1,3,4,5,2}
    \setrow{4}{3,2,5,1,4}
    \setrow{3}{5,4,3,2,1}
    \setrow{2}{2,5,1,4,3}
    \setrow{1}{4,1,2,3,5}
  \end{ddsudoku}
\end{center}

Options

• rows (5) defines the number of rows in the grid

• columns (5) specifies the number of columns in the grid

• width (5.1cm) sets the width of the minipage, in which the grid is typeset

• scale (1) scales the size of the grid in the minipage

• fontsize (Large) specifies the size of the numbers next to the grid. Here, the usual LaTeX sizes are used. Possible values: tiny, scriptsize, footnotesize, small, normalsize, large, Large, LARGE, huge, Huge

• title () sets the title of a puzzle

• titleindent (0cm) defines the indent of the title

• titlewidth (5.1cm) specifies the width of the box the title is set in

• bgcolor () sets the background color of the grid

• counterstyle (none) defines the counter style. Predefined styles: none, left, right

• cvoffset (-22pt) sets the vertical offset of the counters in the margin

Environments

ddsudoku

#!latex

\begin{ddsudoku}

\end{ddsudoku}

Commands

In the grid and around

ddsudokucell

\ddsudokucell{column}{row}{number}

The command sets the {number} of the grid cell {column}{row}.

setrow

\setrow{row}{csv list}

The command sets the contents of {row}. It expects a comma-separated list.

setcolumn

\setcolumn{column}{csv list}

The command sets the contents of {column}.

filldiagonals

\filldiagonals[color]

With the \filldiagonals command, you can fill the diagonals with the color specified with the optional argument color (default: yellow!20). Furthermore, it checks for a quadratic grid, otherwise an error message is issued.

framepuzzle

\framepuzzle[color]

With the \framepuzzle command, you can frame the grid (thicker line) with the color specified with the optional argument color (default: black).

###Presentation

definecounterstyle

The command allows you to define your own styles. For example, the style left is defined as follows:

#!latex

\definecounterstyle{left}{
  \begingroup\reversemarginpar\marginnote{
  \tikz\node[shape=rectangle,fill=yellow!40,inner sep=7pt,
             draw,rounded corners=3pt,thick]
  {\Huge\puzzlecounter};}[\LP@cvoffset]\endgroup}
}

puzzlecounter

\puzzlecounter

The command provides the counter in textual form to use it for example in \definecounterstyle.

titleformat

\titleformat{format}

With the command \titleformat, you can define the format of the title. By default, the definition is as follows:

\titleformat{\centering\Large\color{blue}}

###Miscellaneous

ddsudokusetup

\ddsudokusetup{options}

With the command \ddsudokusetup you can reset the options with global scope.

setpuzzlecounter

\setpuzzlecounter{number}

With the command \setpuzzlecounter, you can reset the puzzle counter, for example before the solutions.

Examples & Solutions

You can download application examples and their solutions from the project page. The puzzles are originally licensed under .

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