The best way is, after generating N.gjf, N+1.gjf and N-1.gjf, run them on a server with high-end CPU, then download the three resulting .wfn files to your local machine and perform analysis using Multiwfn.

Best,

Tian

Regarding to calculation of fukui function following phenol examples in 4.22 section:

is there any way to speed up production of N.wfn, N-1.wfn and N+1.wfn from formatted checkpoint file (.fhck)?

Do you know which features can accellerate this process?  maybe use faster pc or with more cores, memory?

I appreciate a lot!

best regards

Alessio