The generator matrix

 1  0  1  1  1  0  1  1  0  1  1  0  1  1  0  1  1  1  0  1  1  X  1  1  X  1  1  1  1  1  1  1
 0  1  1  0  1  1  0 X+1  1  0 X+1  1 X+1  0  1  X  0 X+1  1  0  1  1  X  1  1  0  0  X  0  X  X  X
 0  0  X  0  0  0  0  0  0  X  0  X  0  X  X  X  0  X  0  X  X  X  X  X  X  X  X  X  0  X  X  0
 0  0  0  X  0  0  0  X  0  X  X  0  0  X  0  0  X  X  X  X  0  X  0  X  0  X  0  0  0  X  X  0
 0  0  0  0  X  0  0  0  X  0  X  X  X  0  0  0  0  X  0  X  X  0  X  X  0  X  0  X  X  0  0  X
 0  0  0  0  0  X  0  X  X  0  X  0  0  X  X  X  X  0  0  X  X  0  0  X  X  0  0  0  0  X  0  X
 0  0  0  0  0  0  X  X  0  X  X  0  X  0  X  X  0  X  0  0  X  X  0  X  0  0  0  X  X  X  0  0

generates a code of length 32 over Z2[X]/(X^2) who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+184x^28+157x^32+160x^36+8x^44+2x^48

The gray image is a linear code over GF(2) with n=64, k=9 and d=28.
As d=28 is an upper bound for linear (64,9,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 9.
This code was found by Heurico 1.16 in 33.9 seconds.