Looking for apple game which is based on programming puzzle

In one of the software company's (Global Soft) interview, I was given Iphone to solve the programming puzzle, It was a game. It was like that, some stack of blocks keep on each other with different colours, there is one block picker, which takes the blocks one by one and place on the different location. Your are given required sequence of block on different location, now you have to program your block picker such way that it place the block according to requirements. You program should be optimal. I remember some of portion of this game, like it has prog1, prog2, progr3, rows where you can put your prog1, prog2, prog3.

I am searching this game please tell me if you know..