Disk Cast Puzzle Level 2
"The World Puzzle Designers’ Forum was held in August, 2000 in Los Angeles. It was where I first met my close Dutch friend, Oskar Deventer. This puzzle is based on a disc-based puzzle that he showed me at that time. Battling it out with this puzzle is like putting your mind to the test against one of the world’s sharpest minds in Oskar.
The idea to keep in mind here is 'circle.'"