Riddle about the Prisoner Princess

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PrisonPrincess, confined in dungeon, can break out if she solves the following riddle. She has two doors in front of her, one opens to freedom, the other is a way to death. She meets two guards at the doors. One of them can be either a “liar” (he will give you only misleading answers) or a “truth-sayer” (always tells the truth). The other guard is a “cunning fellow” who tells lies or truth by turns (he lies for odd-numbered questions and says the truth for even-numbered questions, or the other way around). Both guards know which door opens to freedom but our princess is not aware which guard is “cunning fellow”. The princess has the right to give two questions to one of the guards. How can she find her way out of prison? Note: give simple questions.

Please, if you want to solve the riddle yourself, be careful and do not read the comments on this brainteaser, there can be some who already wrote the solution there. We will publish the answer in the next brainteaser. You are always welcome to ask questions about the task, in case something is not clear. But sorry, don’t ask leading questions.

The answer to the previous riddle about Cinderella is: she threw all tomatoes into water; the ripe ones floated and unripe – sank. Some of you suggested it vice versa. Smiles4angels mixed up tomatoes and potatoes, but it was correct. Tobey, that’s right! We do believe you 🙂 And many thanks to Chris, who performed an experiment to find out the truth! By the way, we really liked another version you suggested: “She hands the bag to Prince Charming and tells him to sort the tomatoes into two piles – ripe and unripe within thirty seconds or he does not get any nookie for a week.”

Source of the image: flickr.com/photos/Moonfall.