Give up liao..

There is a toy that I have been playing with for some days.. during my bus and MRT rides..
The magic cube..

I am able to complete a face easily liao.. after trying over and over again but I still can't complete a whole cube.. why so difficult? I am always stuck with the last layer.. hai~ I have given up trying liao.. I will try it again when I more free bah.. or when my interest come back bah..