As the sponsor of this game I can confirm that Jacky did make the this game, as he configured it to my instructions for the sponsorship!
Juze: if you have any proof it is stolen, please present it to me in detail!
harrykid: I made this game because a lot of people like to play this type of game, me included. And because it was very challenging to implement the game logic.
sherman80: true, but not in flash to my knowledge.
reesylou: interesting ideas! But currently the challenge is to fill the big smiley before time runs out.
Tip for those who find it hard: closely watch the animation in the Help screen. It shows the strategy to use to solve a board. Once you get that, you can refine that strategy, and try to solve it more efficiently :)