After getting my Isis for Christmas, I obsessed over the damn thing for about a week until my destroyed joints forced me to take an intermission. Now, almost a month later, I picked the puzzle up once again and after about an hour of toiling over the horrible sphere, I opened it
Don't give up. I was as lost as I was when I first got it about an hour ago, but now I've got two halves and a wonderful 10 digit prize.