Ruzsa’s genus-one problem

28-point member of a parameterized 7q digit-template family extracted from the N=1267 record. Writing x=uq+v, the fixed fibers are V0={0,1,7,8,35,36,42,43}, V2={-1,1,6,8,34,36,41,43}, V3={0,3,7,10,35,38,42,45}, V4={3,10,38,45}. The finite digit check has only diagonal solutions to V_a+3V_b-2V_c-2V_d=0 together with U_a+3U_b-2U_c-2U_d=0 mod 7; since |vertical error|<=184, this certifies all q>=185.