\documentclass[tikz]{standalone}
\usepackage{forest,calc}
\forestset{
  make tab/.style args={#1:#2:#3/#4:#5:#6/#7:#8:#9}{%
    content={%
      \tabcolsep=.4\tabcolsep
      \begin{tabular}{p{\widthof{x}}|p{\widthof{x}}|p{\widthof{x}}}
        #1 & #2 & #3\\\hline#4&#5&#6\\\hline#7&#8&#9
      \end{tabular}}},
  label position r/.initial=right,
  label position b/.initial=below
}
\begin{document}
\begin{forest}
  TTT/.style args={#1:#2}{
    make tab/.expanded=\forestove{content},
    label={\pgfkeysvalueof{/forest/label position #1}:$#2$},
    edge={->}
  },
  TTT*/.style={
    make tab=::/::/::,
    content/.expand once=%
    \expandafter\vphantom\expandafter{\romannumeral-`0\forestov{content}},
    draw=none,
    append after command={(\tikzlastnode.north) edge (\tikzlastnode.south)},
    for descendants={before computing xy={l*=1.8}},
  },
  th/.style=very thick,
  for tree={node options=draw, inner sep=+0pt, parent anchor=south, child anchor=north}
%
[::/::/::, TTT=r:0
 [x::/::/::, TTT=r:-1
   [x:o:/::/::, TTT=b: 1, th]
   [x::/:o:/::, TTT=b:-1]
   [x::o/::/::, TTT=b: 0, th]
   [x::/::/::o, TTT=b: 0, th]
   [x::/::o/::, TTT=b: 1, th]
]
 [::/::x/::, TTT=r:0,
   [,TTT* % this is just cheating :(
    [o::/::x/::, TTT=b:1]
    [:o:/::x/::, TTT=b:0]
   ]
 ]
 [:x:/::/::, TTT=r:-2
   [:x:o/::/::, TTT=b:-1, th]
   [:x:/:o:/::, TTT=b:-2]
   [:x:/::/:o:, TTT=b: 0, th]
   [:x:/::/o::, TTT=b:-1, th]
   [:x:/o::/::, TTT=b: 0, th]
 ]
]
\end{forest}
\end{document}