Hi Ken,
Click on "Change Cut" on the left of the puzzle and you can choose not only different shapes but up to 247 cuts. It doesn't go to 1000 but think of the time one would have to spend online doing one this large. It takes me 10-15 min to do an 80-piece puzzle and that's long enough for me.
Some of the puzzle cuts are quite a challenge themselves...like tetris, birds, and euros but they are fun. You can embed the puzzle into your website too.
Sue