(
   (w[0, i] == w[0, i - 1] || w[0, i] == w[1, i - 1] || w[0, i] == w[2, i - 1] || w[0, i] == w[3, i - 1] || w[0, i] == w[4, i - 1] || w[0, i] == w[5, i - 1])
&& (w[1, i] == w[0, i - 1] || w[1, i] == w[1, i - 1] || w[1, i] == w[2, i - 1] || w[1, i] == w[3, i - 1] || w[1, i] == w[4, i - 1] || w[1, i] == w[5, i - 1])
&& (w[2, i] == w[0, i - 1] || w[2, i] == w[1, i - 1] || w[2, i] == w[2, i - 1] || w[2, i] == w[3, i - 1] || w[2, i] == w[4, i - 1] || w[2, i] == w[5, i - 1])
&& (w[3, i] == w[0, i - 1] || w[3, i] == w[1, i - 1] || w[3, i] == w[2, i - 1] || w[3, i] == w[3, i - 1] || w[3, i] == w[4, i - 1] || w[3, i] == w[5, i - 1])
&& (w[4, i] == w[0, i - 1] || w[4, i] == w[1, i - 1] || w[4, i] == w[2, i - 1] || w[4, i] == w[3, i - 1] || w[4, i] == w[4, i - 1] || w[4, i] == w[5, i - 1])
&& (w[5, i] == w[0, i - 1] || w[5, i] == w[1, i - 1] || w[5, i] == w[2, i - 1] || w[5, i] == w[3, i - 1] || w[5, i] == w[4, i - 1] || w[5, i] == w[5, i - 1])

)