I'm in the process of knitting a chessboard scarf. I've always wanted to knit chessboard patterns but everytime I've tried it the squares were not joined together. I stumbled upon this video tutorial last week and I'm now please to announce I'm 14 inches into a successful cheesboard scarf! I'm still not sure what I was doing wrong in the past but at least now I seem to have mastered it.
I'll post pictures later.