I and a few other people too I think really enjoyed that one logical riddle Grey posted a while ago. Since these kinds of riddles are a little underrepresented here so far, I googled a few (translated from German by me):
M1: Shopping
On the counter of a mall, five friends are waiting in line (Dana, Ingo, Jessica, Sören, Valerie). They are all of different ages (26, 27, 30, 33 and 35 years) and want to buy different kinds of shirts (button-up shirt, turtleneck, pullover, sweatshirt, regular shirt) for themselves. They all have different colors (blue, yellow, green, red, black) and different sizes (XS, S, M, L, XL).
Who is standing in what order, how old are they, what are they buying and in what color and size? ("first" person is the one standing the closest to the counter. Nobody else is waiting in line.)
- Dana wants to buy a shirt in the size XL, and stands closer to the counter as the person who wants to buy a black shirt.
- Jessica stands directly in front of the person who wants to buy a turtleneck.
- The second person in line wants to buy a yellow shirt.
- The regular shirt isn´t red.
- Sören wants to buy a sweatshirt. The person right in front of him is older than the person right behind him.
- Ingo wants to buy a shirt in the size L.
- The last person in line is 30 years old.
- The oldest person wants to buy the shirt in the smallest size.
- The person directly behind Valerie wants to buy a red shirt, bigger than size S.
- The youngest person wants to buy a yellow shirt.
- Jessica wants to buy a button-up shirt.
- The third person in line wants to buy a shirt in the size M.
- The turtleneck is either red, yellow or green.
M2: trapped at the stake (this one might be quite popular, I think I heard it before...)
Three people got kidnapped and handcuffed to three stakes while blindfolded. The stakes are standing in a line. Now, the blindfolds are removed. Their kidnapper tells them:
the first one of you sees no other stake, the one in the middle only the stake of the first one, and the last one only the stakes of those in front of him. I have five stakes in total, two of them are red, and three of them are black. Those of you who can correctly guess their stake´s color will be set free. If your guess is wrong, you will be killed.
After five minutes, the person right in the front shouts: "My stake is black!" He is released. How did he know his stake´s color?
M3: The princess in the lake (this one´s a little mathmatical)
One day, a princess decided to go for a swim in the circular lake far away from her father´s castle. As soon as she was in the water, a witch appeared to try and kidnap the girl.
The princess quickly swam into the middle of the lake to think of an escape-plan. She noticed four things:
- The witch can´t go into the water (but I can´t stay in the water, or else I will drown)
- The witch can walk four times as fast as I can swim
- The witch always tries to stay as close to me as possible
- On land I am faster than the witch
How did the princess escape?