I agree that simply rotating the entire puzzle 90º or 180º doesn't count as a different solution. That makes the total number of puzzle permutations less than the number I calculated above, but I'm not sure how much less. It may simply be that number divided by 4, but that seems too simple of a solution. In any case, I at first assumed that my program had merely produced a rotated version of the same solution, but the program output showed that the puzzle piece in the bottom center of igmd's image, was placed in the top left in my solution, and there is no rotational transformation which can move a center edge piece to a corner. I then assumed I had fumbled in encoding the puzzle in my program, so I sliced and diced and pasted the puzzle pieces to correspond to my solution and everything fit. Here is igmd's solution again: and here is my solution rotated 90º to the left: and it is indeed a different solution. So it is now a find the difference puzzle. Ready, set, go!

Dorothy the Doodle's bunny. This is the latest in a series of bunnies that messed with the doodle that I was looking after this last week. She really wanted to chase it. Unfortunately she had gotten the experience of chasing one once and has never forgotten the joy.

Annie...Great pelican photo. The empty space in front of it's face......perfect! -------------------------------------------------------------------------------------------------------------- Annie's bird...my bird....chain not broken...

Walk along the coast of Washington state, on the way to a lighthouse