Quote Originally Posted by Marty
amazing....i posted this riddle 2 years ago on my homepage and even today i receive emails with possible solutions.

but i have another interesting riddle:
you have two rooms, in the first room there is a bulb and in the second there are three power buttons. One of these buttons is connected with the bulb. you can switch the buttons as much as you want but you are only allowed to go one time to the other room to look whether the bulb is on or off.
how do you get the right power button?

good luck
Flick the 1st switch on for (randomly) 10 minutes. Then flick it off, and flick the 2nd switch on. Now go into the room with the bulbs. If the bulb is on, you know it is the 2nd switch. If it is off, go touch the bulb. If it is hot, it was the 1st switch, if its cold, it has to be the 3rd switch. Of course, this is assuming that there IS a switch that can turn the bulb on.

p.s. I'll try solve the Einstein puzzle when I've got free time.