Logical Puzzles

1. Answer A
2. Answer A or B
3. Answer B or C

Each card has a digit on one side and a letter on the other side.

Suspect A:

1. In high-school I was in the same class as suspect C.
2. Suspect B has no driving license.
3. The thief didn't know that it was the car of the chief of police.

1. Suspect C is the guilty one.
2. Suspect A is not guilty.
3. I never sat behind the wheel of a car.

1. I never met suspect A until today.
2. Suspect B is innocent.
3. Suspect D is the guilty one.

1. Suspect C is innocent.
2. I didn't do it.
3. Suspect A is the guilty one.

They follow the following rules:

• A player always tries to win: if a player can place his own symbol (X or O) in a row which already contains two of his own symbols, he will do so.
• A player always tries to avoid that his opponent wins: if a player can place his own symbol (X or O) in a row which already contains two of the symbols of his opponent, he will do so.

In the game shown on the right, 6 moves have been done. David plays with crosses (X) and Angela plays with circles (0). However, we don't know who started the game.

• "Victor sat on the left of the woman who sat on the left of the man who sat on the left of Anna.
• Esther sat on the left of the man who sat on the left of the woman who sat on the left of the man who sat on the left of the woman who sat on the left of my husband.
• Jim sat on the left of the woman who sat on the left of Roger.
• I did not sit beside my husband."

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it's Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

1.  = 
2.  = 
3.  = 

 = ...

The traveler knows that one of the two brothers always tells the truth and the other one always lies. Unfortunately, he does not know which one always tells the truth and which one always lies.

By exchanging the upper two parts of the figure, one gets the figure below. This new figure however only shows fourteen men! (If you don't belief what happened here: please print it, cut it, and try it out yourself!)

• They have only one small space ship.
• Only two individuals can ride in the space ship each time.
• All Federation Officers can pilot the space ship, but only one alien can pilot the ship.
• If at any time there are both Federation Officers and aliens on a planet, then there must always be more (or the same number of) Federation Officers than aliens on that planet. This is because if there are more aliens than Federation Officers, then the aliens will kill the Federation Officers. Count any individual in the space ship when it is on one planet as being on that planet.
• The one space ship is the only means of transportation. There is no other way to get to the "Peace Talks". No one can exit the space ship while it is in flight.
• To start off, all the Federation Officers and aliens are on the same planet.

• Three teachers teach Dutch language
• There is only one math teacher
• There are two teachers for chemistry
• Two teachers, Simon and mister English, teach history
• Peter doesn't teach Dutch language
• Steven is chemistry teacher
• Mister Dutch doesn't teach any course that is tought by Karl or mister Painter.