i posted this on the "what are you playing" thread but i think this needs his own thread
http://jayisgames.com/archives/2011/07/robot_unlock.php
basicaly here's how it works,the huge moai like head makes you a request of putting certain numbers in certain places and then you try to reach that state by using the / * + - > < operators,and it really gets your brain grinding out
for example one request ask you to get out the remainder of a division out of 2 numbers so for example the starting number might be
0 24 5 0
and the result would be
4 X X X (where x can be whatever you want) how do you do so?
spoiler (click to show/hide)
sum the second position to the first position
24 24 5 0
divide the second position by the third position
24 4 5 0
multiply the second position by the third position
24 20 5 0
subract the first position and the second position
4 20 5 0
give it a try bore?