The \(d\) -Cut problem is to decide whether a graph has an edge cut such that each vertex has at most d neighbours on the opposite side of the cut. If \(d=1\) , we obtain the intensively studied Matching Cut problem. The d-Cut problem has been studied as well, but a systematic study for special graph classes was lacking. We initiate such a study and consider classes of bounded diameter, bounded radius and H-free graphs. We prove that for all \(d\ge 2\) , \(d\) -Cut is polynomial-time solvable for graphs of diameter 2, \((P_3+P_4)\) -free graphs and \(P_5\) -free graphs. These results extend known results for \(d=1\) . However, we also prove several NP-hardness results for \(d\) -Cut that contrast known polynomial-time results for \(d=1\) . Our results lead to full dichotomies for bounded diameter and bounded radius and to almost-complete dichotomies for H-free graphs.
