Brain Teasers
Brave Knights
A king heard that the nearby kingdoms were being destroyed by a fierce dragon. He called forth his most trusted and skilled knights to meet and plan how to protect the kingdom. The 6 knights, Sir William, Sir Andrew, Sir Luke, Sir Calvin, Sir Charles and Sir Vincent, decided that two knights would venture out to find and slay the dragon while the other 4 would defend the kingdom.
From the statements below, which two knights went to seek the dragon?
1. If neither Sir William or Sir Vincent rode out, then Sir Calvin did.
2. If either Sir Calvin or Sir Vincent went to kill the dragon, then Sir Andrew did not.
3. If neither Sir Andrew or Sir William were of the brave two that left the kingdom, then Sir Charles was.
4. If neither Sir Luke or Sir Andrew went out, then Sir Vincent did.
5. If Sir William was one of the two, then either Sir Calvin or Sir Charles was with him.
6. If Sir Vincent was not of the two who went to slay the dragon, then neither was Sir Andrew nor Sir Charles.
From the statements below, which two knights went to seek the dragon?
1. If neither Sir William or Sir Vincent rode out, then Sir Calvin did.
2. If either Sir Calvin or Sir Vincent went to kill the dragon, then Sir Andrew did not.
3. If neither Sir Andrew or Sir William were of the brave two that left the kingdom, then Sir Charles was.
4. If neither Sir Luke or Sir Andrew went out, then Sir Vincent did.
5. If Sir William was one of the two, then either Sir Calvin or Sir Charles was with him.
6. If Sir Vincent was not of the two who went to slay the dragon, then neither was Sir Andrew nor Sir Charles.
Answer
Sir Vincent and Sir Charles went out of the kingdom to slay the dragon.If statement 1 is valid, Calvin was one of the two that left. If not, either William or Vincent was one of the two. Therefore the PAIR could not be Andrew and Luke, Sir Andrew and Charles or Luke and Charles.
From 3, the PAIR that left was not Luke and Calvin, Luke and Vincent or Calvin and Vincent. From 4, the two could not have been William and Calvin, William and Charles or Calvin and Charles.
From 5, William did not venture out and therefore from 4 the pair was not William and Calvin or William and Charles.
From 6, Vincent must have been one of the two since the statement identifies three of the four knights not eliminated. From 2, Vincent was one of the two, and by elimination, the other is Charles.
Hide Answer Show Answer
What Next?
View a Similar Brain Teaser...
If you become a registered user you can vote on this brain teaser, keep track of which ones you have seen, and even make your own.
Solve a Puzzle
Comments hidden to avoid spoilers.
Follow Braingle!