This game consists of five different stages (rooms). Some puzzles are easier to solve than others. I couldn't finish stages three and four without lurking through the walkthrough. c: Overall, it's a nice brain game.
Stage 3 (the white dots board) - Map the position of the atomic balls according to the paint dish sequence. A bottom up approach.
Stage 4 (the safe code) - Trace the ball sequence observed in the cupboard using the billboard.