 Definition 3.4. The composition \(\tau \circ \sigma\) on \(G \multimap K\) of strategies \(\sigma\) on \(G \multimap H\) and \(\tau\) on \(H \multimap K\) consists of the sequences of moves of \(M_G + M_K\) obtained by hiding the moves of \(M_H\) from the sequences \(s\) of moves in \(M_G + M_H + M_K\) such that \(s \upharpoonright G,H\) is in \(P_{G \multimap H}\) and \(s \upharpoonright H,K\) is in \(P_{H \multimap K}\).