From this post in the "Use Your '2+2' Logic" thread:
You have 5 bottles on a table from left to right. One of them has poison in, you have to find out which one. I will number each object from left to right, from 1 to 5 like in this picture;
You deduce which number bottle it is from the following information;
- The poison is in a round bottle that is small.
- The bottles at each end of the table are large bottles, and there are no other large bottles on the table.
- There is a large bottle next to the poisoned bottle.
- One bottle is a cylindrical shape
- Bottle number 2 is not cylindrically shaped
- The poisoned bottle is not next to a cylindrically shaped bottle
Which bottle number is the poison?
(this is not really aimed at you Schera, but at anyone who wants to have a go at solving the riddle using deductive reasoning.)
Okay, I can't resist giving the answer, it is in the text below this sentence, you have to highlight the text, I made it invisible in case people still want to figure it out without knowing the answer:
It can't be bottles 1 or 5 as they are large bottles, and the bottle of poison is a small round bottle. It can't be bottle 3 because the bottle of poison is next to a large bottle. So the bottle of poison can only be either bottle 2 or 4. Since bottle 2 can't be a cylindrical bottle and the bottle of poison is not next to a cylindrical bottle then the bottle of poison must be bottle 2 because if it was bottle 4 then the cylindrical bottle would have to be next to it since bottle 2 is not cylindrical, and it was stated that the bottle of poison does not have a cylindrical bottle next to it.
(I have yet to view the answer.) If you had specified that the poison is in liquid form, then I would have choosen the one that isn't empty as you haven't specified that the others contain anything.