## 11. Continuation of the Seventh Story

Soon after the cookbook was returned to the Queen, it was stolen again. And once again, suspicion fell on the Duchess, the Cook, and the Cheshire Cat.

At the trial, all three gave the same testimonies as before. But this time, the one who stole the cookbook lied, while the other two either both lied or both told the truth.

Who stole the cookbook this time?
11. Continuation of the seventh story. The Cheshire Cat could not steal the cookbook for the same reason as in the previous problem. Suppose the Duchess stole the cookbook. Then the Cheshire Cat is lying, and the Cook is telling the truth, which contradicts the condition of the problem (if the cookbook was stolen by the Duchess, then the other two suspects either both lie or both tell the truth). Therefore, the Duchess did not steal the cookbook. The Cook stole it. (The other two suspects either both lie or both tell the truth - in reality, both are lying. All three are liars.)