T. Brylawski and J. Oxley asked, if the size of a largest circuit in a graph is a Tutte invariant. We show by an example, that this is not the case. © 1991.
Schwärzler, W. (1991). Being Hamiltonian is not a Tutte invariant. Discrete Mathematics, 91(1), 87–89. https://doi.org/10.1016/0012-365X(91)90165-X