Color Panel Puzzle at Mac App Store analyse

This application is a simple puzzle game. The purpose is to erase all panels. == White Puzzle == When a touch and a flick do and pile up a panel, and I make it white, its possible to erase that. red + green -> yellow red + blue -> pink green + blue -> light blue red + light blue -> white (erase) green + pink -> white (erase) blue + yellow -> white (erase) red + black -> red green + black -> green blue + black -> blue yellow + black -> yellow pink + black -> pink light blue + black -> light blue The black panel can not move == Black Puzzle == The purpose is to erase all panels. When a touch and a flick do and pile up a panel, and I make it black, its possible to erase that. white - red -> light blue white - green -> pink white - blue -> yellow white - yellow -> blue white - pink -> green white - light blue -> red yellow - red -> green yellow - green -> red pink - red -> blue pink - blue -> red light blue - green -> blue light blue - blue -> green red - red -> black (erase) green - green -> black (erase) blue - blue -> black (erase) -- Red Panel Puzzle -- This application is a simple puzzle game. The purpose is to erase all panels. When a touch and a flick do and pile up a panel, and I make it Red, its possible to erase that. white - green -> pink white - blue -> yellow white - yellow -> blue white - pink -> green white - light blue -> red(erase) yellow - green -> red(erase) pink - blue -> red(erase) light blue - green -> blue light blue - blue -> green green - green -> black blue - blue -> black pink - pink -> black yellow - yellow -> black light blue - light blue -> black white - white -> black The black panel can not move