The generator matrix 1 0 1 1 1 0 1 1 0 1 1 0 1 1 X 1 1 X 1 1 X 1 1 X 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 X X X X X X X X 0 0 0 0 1 0 1 1 0 X+1 1 0 X+1 1 0 1 1 X X+1 1 X X+1 1 X 1 1 X 1 1 0 0 0 0 X X X X X+1 X+1 X+1 X+1 1 1 1 1 0 0 0 X X X 0 X 1 1 1 1 0 0 0 X 0 X 0 X 0 X X 0 X X 0 X 0 X 0 X X X 0 0 0 0 0 X X X X 0 0 0 0 X X X X 0 0 0 X X X X 0 0 0 0 0 X X 0 0 0 0 X X X X 0 0 0 X X 0 X 0 X 0 X X X X 0 0 0 0 X X 0 0 X X 0 0 X X 0 0 X X 0 X X 0 0 X X 0 0 0 X X 0 0 generates a code of length 53 over Z2[X]/(X^2) who´s minimum homogenous weight is 52. Homogenous weight enumerator: w(x)=1x^0+14x^52+28x^53+14x^54+1x^56+2x^57+1x^58+2x^65+1x^66 The gray image is a linear code over GF(2) with n=106, k=6 and d=52. As d=52 is an upper bound for linear (106,6,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 6. This code was found by Heurico 1.16 in 0.0193 seconds.