on all fours.(Of a law case) squarely on point (with a precedent) on both facts and law; nearly identical in all material ways <our client’s case is on all fours with the Supreme Court’s most recent opinion>. Cf. WHITEHORSE CASE.

β€œThe courts, nowadays, are governed largely by precedent, and this imposes on the advocate the necessity of supporting his client’s cause by concrete authorities β€” cases β€˜on all fours’ with, or at least analogous to, the case at bar.” William M. Lile et al., Brief Making and the Use of Law Books 98 (3d ed. 1914).

[Blacks Law 8th]