\begin{tcbposter}[
  coverage = {spread,
    boxsep = 10pt,
  },
  poster   = {showframe=false,
    columns=4,
    rows=2,
  },
  boxes    = {
    colback=white,
    fit,
    fit basedim=10pt,
    frame code={\ifodd\thepage\node at (frame.south east) {\thepage};\else \node at (frame.south west) {\thepage};\fi\stepcounter{page}},
  },
]


\posterbox{name=seventh,column=1,row=1,span=1,rowspan=1}{
  \begin{center}
  \rotatebox{-90}{\noindent\begin{minipage}{.5\textheight}
  \input{config/rules/weapons.tex}
  \centering
  \commonWeaponsChart
  \end{minipage}}
  \end{center}
}

\posterbox{name=tenth,column=2,row=1,span=1,rowspan=1}{
  \bklTitle{Armour}
  \input{config/rules/armour.tex}
  \commonArmourChart
}

\posterbox{name=eleventh,column=3,row=1,span=1,rowspan=1}{
  \input{config/rules/fate.tex}
  \par\vspace{1em}
  \subsubsection{Projectiles}
  \input{config/rules/projectiles.tex}
}

\posterbox{name=sixth,column=4,row=1,span=1,rowspan=1}{
}

\posterbox{name=second,column=1,row=2,span=1,rowspan=1}{
  \begin{center}
    \subsubsection{\Huge BIND}
    \par
    \vspace{3\baselineskip}
    \subsubsection{The Rules-Light RPG}
    \par
    \vspace{3\baselineskip}
    \hint{(it weighs 5 grams!)}
  \end{center}
}

\posterbox{name=fifteenth,column=2,row=2,span=1,rowspan=1}{
  \bklTitle{Magic}
  \input{config/rules/spells.tex}
}

\posterbox{name=fourteenth,column=3,row=2,span=1,rowspan=1}{
  \input{config/rules/interval.tex}
}

\posterbox{name=third,column=4,row=2,span=1,rowspan=1}{
  \bklTitle{Swarms}
  \input{config/rules/swarms.tex}
}

\end{tcbposter}