Impossible Intarsia - update

Up to now I have:

• Knitted
• Followed a chart
• Amended/written said chart up from original sketch
• Tinked
• Ripped out several rows (using of course the very sensible "Agh darn it, I'll just pull the needles out of the lot and go from there" procedure)
• Worked with five cones of yarn all connected to the piece at one time
• Tried and failed at not swearing

on the train during my morning and evening commutes.  Seriously if you see a harassed looking lady working on a black and red intarsia... please give me a smile because this knit is doing my head in!