In the title compound, C(10)H(10)N(6), the three N atoms in the 2-positions of the pyrazole rings (the ones not bridging to the central C atom are acceptors for weak C-H⋯N contacts with H⋯N distances ranging from 2.49 to 2.59 Å). These furnish the formation of layers perpendicular to [100]. An ortho-rhom-bic polymorph of the title compound has already been described [McLauchlan et al. (2004 ▶). Acta Cryst. E60, o1419-o1420].