Btukfyl

I am trying to make the grey boxes larger, but cannot succeed (large enough to include the playoffs). Would really appreciate some help.

Here is my code:

[![documentclass[11pt]{article}

usepackage[utf8]{inputenc}

usepackage{multirow}

usepackage[margin=1in]{geometry} 

usepackage{amsmath,amsthm,amssymb,amsfonts}

 usepackage{tikz}   %for game theory stuff

 usepackage[skip=1ex]{caption}

usetikzlibrary{calc}

usepackage{istgame} 

defvpay#1#2{begin{matrix}#1\#2end{matrix}}



begin{document}





   begin{center}

    begin{istgame}

    xtShowEndPoints

    xtdistance{25mm}{70mm}

    istrooto(0){$text{Firm}  1$}

      istb{BIG}[l]

      istb{small}[r]

      endist

      xtdistance{25mm}{35mm}

    istrooto(1)(0-1){$text{Firm}  2$}

      istb{Low}[l]

      istb{High}[r]

      endist

      istrooto(2)(0-2){$text{Firm}  2$}

      istb{low}[l]

      istb{high}[r]

      endist

    xtdistance{20mm}{10mm}

      istrooto(a)(1-1){$text{Firm}  1$}

      istb{L}[l]{vpay{8}{8}}

      istb{H}[r]{vpay{7}{7}}

      endist

      istrooto(b)(1-2){$text{Firm}  1$}

      istb{L}[l]{vpay{6}{10}}

      istb{H}[r]{vpay{6}{7}}

      endist

    istrooto(c)(2-1){$text{Firm}  1$}

      istb{l}[l]{vpay{7}{8}}

      istb{h}[r]{vpay{10}{6}}

      endist

      istrooto(d)(2-2){$text{Firm}  1$}

      istb{l}[l]{vpay{5}{11}}

      istb{h}[r]{vpay{8}{7}}

      endist

      setxtinfosetstyle{dashed}

    xtInfoset(a)(b)

    xtInfoset(c)(d)

    xtSubgameBox(1){(a)(b)(a-1)(b-1)(a-1)(b-2)(a-2)}

    xtSubgameBox(2){(c)(d)(c-1)}

    %xtSubgameBox(2){(2-1)(2-2)}[inner sep=16pt]

    %xtSubgameBox(2){(2-1)(2-2)}[solid,rounded corners=0pt,inner sep=16pt]

    end{istgame}



    end{center}

    end{document}][1]][1]

I followed the manual of istgame to where it talks about these experimental boxes. There it is suggested to move and enlarge the boxes. This is what I did, i.e. I added [yshift=-2ex] and [inner ysep=6ex]. I am not claiming this is elegant, but at least I can blame the manual for this choice.

documentclass[11pt]{article}

usepackage[utf8]{inputenc}

usepackage[margin=1in]{geometry} 

usepackage{amsmath}

usepackage{istgame} 

defvpay#1#2{begin{matrix}#1\#2end{matrix}}



begin{document}

begin{center}

begin{istgame}

    xtShowEndPoints

    xtdistance{25mm}{70mm}

    istrooto(0){$text{Firm}  1$}

      istb{BIG}[l]

      istb{small}[r]

      endist

      xtdistance{25mm}{35mm}

    istrooto(1)(0-1){$text{Firm}  2$}

      istb{Low}[l]

      istb{High}[r]

      endist

      istrooto(2)(0-2){$text{Firm}  2$}

      istb{low}[l]

      istb{high}[r]

      endist

    xtdistance{20mm}{10mm}

      istrooto(a)(1-1){$text{Firm}  1$}

      istb{L}[l]{vpay{8}{8}}

      istb{H}[r]{vpay{7}{7}}

      endist

      istrooto(b)(1-2){$text{Firm}  1$}

      istb{L}[l]{vpay{6}{10}}

      istb{H}[r]{vpay{6}{7}}

      endist

    istrooto(c)(2-1){$text{Firm}  1$}

      istb{l}[l]{vpay{7}{8}}

      istb{h}[r]{vpay{10}{6}}

      endist

      istrooto(d)(2-2){$text{Firm}  1$}

      istb{l}[l]{vpay{5}{11}}

      istb{h}[r]{vpay{8}{7}}

      endist

      setxtinfosetstyle{dashed}

    xtInfoset(a)(b)

    xtInfoset(c)(d)

    xtSubgameBox([yshift=-2ex]1){(a)(b)(a-1)(b-1)(a-1)(b-2)(a-2)}[inner ysep=6ex]

    xtSubgameBox([yshift=-2ex]2){(c)(d)(c-1)}[inner ysep=6ex]

    end{istgame}

end{center}

end{document}