Play the Fifteen puzzle online

Task 1. You see pieces in the solved position that may be recalled at any time by pressing the Solve button. Your task is to press the Scramble button one or more times and return them to the solved position by moving pieces to the empty place.

Task 2. When you did it, there is a hardier part. Press the Pseudo Solve button and optionally Scramble. Now try to return pieces to the solved position. If you do this, send me your solution and I will send you your prize, $5000. :)