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Moving Day (Four Horses in the UK version) is a puzzle in Professor Layton and the Diabolical Box.
Puzzle
- US Version
You have four horses, all of which travel at different speeds. In traveling form point A to point B, these horses take one, two, four, and six hours respectively.
One day, you decide to move all your horses from point A to point B. However, you can only move a maximum of two horses at a time, and you need to ride a horse back to point A each time you return to move your other horses. Knowing you can only move as fast as the slowest horse you're traveling with, what's the fewest number of hours it will take to complete your move?
- UK Version
You have four horses, all of which travel at different speeds. In travelling from point A to point B, these horses take one, two, four and six hours respectively.
One day, you decide to move all your horses from point A to point B. However, you can only move a maximum of two horses at a time, and you need to ride a horse back to point A each time you return to move your other horses. Knowing you can only move as fast as the slowest horse you're travelling with, what's the fewest number of hours it will take to move all the horses?
Hints
Solution
Incorrect
Too bad!
- US Version
Think hard about the clues you've been given and try again.
- UK Version
Think hard about what the puzzle is asking you to do.
Correct
That's right!
- US Version
To start, take your one- and two-hour horses. Then ride your one-hour horse back. Next, ride out on your four- and six-hour horses, and return on your two-hour horse. At this point you've been moving horses for 11 hours--three in the first excursion, and eight in the next.
Now you should be back at point A with your one- and two-hour horses. Ride them both across to point B to finish the task in 13 hours.
- UK Version
To start, take your one- and two-hour horses. Then ride your one-hour horse back. Next, ride out on your four- and six-hour horses, and return on your two-hour horse. At this point you've been moving horses for 11 hours - three in the first excursion, and eight in the next.
Now you should be back at point A with your one- and two-hour horses. Ride them both across to point B to finish the task in 13 hours.
Professor Layton and the Diabolical Box | Puzzles in||
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Normal |
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