What package for board game that's not chess and is closer to othello?

The MWE below shows a modification of the othelloboard package to remove the corner fields and to separate the outer rows and columns from the inner 6x6 board with a thick line.

I opted not to change the actual position of the outer rows and columns because that would require a full rewrite of everything in the package that has to do with drawing at specific coordinates (which would amount to a very large number of changes).

Apart from the grid drawing also the two environments othelloboard and othelloboardnorefs needed to be changed, because the original definition draws a frame around the board (which is actually not necessary because the outer lines are also drawn in the grid).

MWE:

documentclass{article}
usepackage{othelloboard}

% redefinition to remove frame around board
renewenvironment{othelloboard}[1]%
{renewcommand{scalefactor}{#1} begin{lrbox}{fmboard}begin{picture}(192,192)resetalldisccolours othellogrid gridrefs}
{end{picture} end{lrbox} scalebox{scalefactor}{begin{picture}(208,208)(-16,0) usebox{fmboard} end{picture}}}

renewenvironment{othelloboardnorefs}[1]%
{renewcommand{scalefactor}{#1} begin{lrbox}{fmboard}begin{picture}(192,192)resetalldisccolours othellogrid}
{end{picture} end{lrbox} scalebox{scalefactor}{begin{picture}(192,192)(0,0) usebox{fmboard} end{picture}}}

% redefinition of grid
renewcommand{othellogrid}{%
% outside lines, shorter to cut off corners
begingroup % start of linethickness scope
linethickness{0.8mm}
put(0,24){line(0,1){144}}   % bottom left to top left
put(192,24){line(0,1){144}} % top right to bottom right
put(24,0){line(1,0){144}}   % bottom left to bottom right
put(24,192){line(1,0){144}} % top left to top right
% inside lines
% lines around the 6x6 inner board
put(24,0){line(0,1){192}}
put(168,0){line(0,1){192}}
put(0,24){line(1,0){192}}
put(0,168){line(1,0){192}}
endgroup % end of linethickness scope
% other inner lines
put(48,0){line(0,1){192}}
put(72,0){line(0,1){192}}
put(96,0){line(0,1){192}}
put(120,0){line(0,1){192}}
put(144,0){line(0,1){192}}
put(0,48){line(1,0){192}}
put(0,72){line(1,0){192}}
put(0,96){line(1,0){192}}
put(0,120){line(1,0){192}}
put(0,144){line(1,0){192}}
}

begin{document}
begin{othelloboard}{1}
othelloarrayfirstrow   {0}{0}{0}{0}{0}{0}{0}{0}
othelloarraysecondrow  {0}{0}{2}{0}{0}{0}{0}{0}
othelloarraythirdrow   {0}{1}{2}{2}{2}{0}{0}{0}
othelloarrayfourthrow  {0}{1}{2}{1}{2}{1}{0}{0}
othelloarrayfifthrow   {0}{0}{2}{2}{1}{1}{0}{0}
othelloarraysixthrow   {0}{0}{2}{1}{1}{1}{0}{0}
othelloarrayseventhrow {0}{0}{0}{0}{0}{0}{0}{0}
othelloarrayeighthrow  {0}{0}{0}{0}{0}{0}{0}{0}
end{othelloboard}
end{document}

Result:

---

Edit: a filled square can be printed using a rule of 24pt width and height. With a double for-loop (for example using the forloop package) you can draw a checkered board. To separate the inner board from the outer rows and columns (the thick line is hard to see with the checkered squares) you can draw a gray rectangle around the inner squares.

MWE:

documentclass{article}
usepackage{othelloboard}
usepackage{forloop}
usepackage{xcolor}

% redefinition to remove frame around board
renewenvironment{othelloboard}[1]%
{renewcommand{scalefactor}{#1} begin{lrbox}{fmboard}begin{picture}(192,192)resetalldisccolours othellogrid gridrefs}
{end{picture} end{lrbox} scalebox{scalefactor}{begin{picture}(208,208)(-16,0) usebox{fmboard} end{picture}}}

renewenvironment{othelloboardnorefs}[1]%
{renewcommand{scalefactor}{#1} begin{lrbox}{fmboard}begin{picture}(192,192)resetalldisccolours othellogrid}
{end{picture} end{lrbox} scalebox{scalefactor}{begin{picture}(192,192)(0,0) usebox{fmboard} end{picture}}}

% some variables for checkered board loops
newcounter{xsquare}
newcounter{ysquare}
newcounter{shiftsquare}
newcounter{skipsquare}

% redefinition of grid
renewcommand{othellogrid}{%
% outside lines, shorter to cut off corners
begingroup % start of linethickness scope
linethickness{0.8mm}
put(0,24){line(0,1){144}}   % bottom left to top left
put(192,24){line(0,1){144}} % top right to bottom right
put(24,0){line(1,0){144}}   % bottom left to bottom right
put(24,192){line(1,0){144}} % top left to top right
% inside lines
put(24,0){line(0,1){192}}
put(168,0){line(0,1){192}}
put(0,24){line(1,0){192}}
put(0,168){line(1,0){192}}
endgroup % end of linethickness scope
put(48,0){line(0,1){192}}
put(72,0){line(0,1){192}}
put(96,0){line(0,1){192}}
put(120,0){line(0,1){192}}
put(144,0){line(0,1){192}}
put(0,48){line(1,0){192}}
put(0,72){line(1,0){192}}
put(0,96){line(1,0){192}}
put(0,120){line(1,0){192}}
put(0,144){line(1,0){192}}
%
% double for loop for checkered board
% loop rows
forloop[24]{ysquare}{0}{value{ysquare}<192}{%
% shift or shift back one square after every row
ifnumvalue{shiftsquare}=0setcounter{shiftsquare}{24}elsesetcounter{shiftsquare}{0}fi
% loop columns
forloop[48]{xsquare}{value{shiftsquare}}{value{xsquare}<192}{%
% check for skipping corners
setcounter{skipsquare}{0}
% bottom right corner
ifnumvalue{ysquare}=0ifnumvalue{xsquare}=168%
setcounter{skipsquare}{1}fifi
% top left corner
ifnumvalue{ysquare}=168ifnumvalue{xsquare}=0%
setcounter{skipsquare}{1}fifi
% draw black square if not one of the two corners
ifnumvalue{skipsquare}=0%
put(thexsquare,theysquare){rule{24pt}{24pt}}%
fi
}% end loop columns
}% end loop rows
% gray frame around inner board
begingroup
color{gray}
linethickness{1.2mm}
put(24,24){line(0,1){144}}
put(168,24){line(0,1){144}}
put(24,24){line(1,0){144}}
put(24,168){line(1,0){144}}
endgroup
}

begin{document}
begin{othelloboard}{1}
othelloarrayfirstrow   {0}{0}{0}{0}{0}{0}{0}{0}
othelloarraysecondrow  {0}{0}{2}{0}{0}{0}{0}{0}
othelloarraythirdrow   {0}{1}{2}{2}{2}{0}{0}{0}
othelloarrayfourthrow  {0}{1}{2}{1}{2}{1}{0}{0}
othelloarrayfifthrow   {0}{0}{2}{2}{1}{1}{0}{0}
othelloarraysixthrow   {0}{0}{2}{1}{1}{1}{0}{0}
othelloarrayseventhrow {0}{0}{0}{0}{0}{0}{0}{0}
othelloarrayeighthrow  {0}{0}{0}{0}{0}{0}{0}{0}
end{othelloboard}
end{document}

Result:

If you also want to put pieces on black squares then you can modify the code that is used for drawing pieces (blackdisc and whitedisc) to use colors other than plain black and white. Below I've used dark gray and off-white with two circles around the pieces.

definecolor{offwhite}{RGB}{255,255,244}
definecolor{dimgray}{RGB}{42,42,42}
renewcommand{blackdisc}{linethickness{0.5mm}color{dimgray}circle*{19}color{gray}circle{19.4}linethickness{0.2mm}circle{15}}
renewcommand{whitedisc}{linethickness{0.5mm}color{offwhite}circle*{19}color{gray}circle{19.4}linethickness{0.2mm}circle{15}}