Welcome to Bobs Mad Veterinarian Puzzle Page
In September of 1998, after fiddling with this puzzle format for about a
decade, I posted the first
puzzle to the rec.puzzles
A mad veterinarian has created three animal transmogrifying machines.
Puzzle solvers discovered that it was impossible to convert a single cat into
seven mice, nor to a lonesome pack of dogs. However, they posed and answered
followup questions, such as how many mice can be created from a
single cat and whats the smallest number of cats that can
be turned into just dogs.
Place a cat in the input bin of the first machine, press the button, and
bing! Open the output bins to find two dogs and five mice.
The second machine can convert a dog into three cats and three mice, and
the third machine can convert a mouse into a cat and a dog. Each machine can
also operate in reverse (e.g. if you've got two dogs and five mice, you can
convert them into a cat).
You have one cat.
- Can you convert it into seven mice?
- Can you convert it into a pack of dogs, with no mice or cats left over?
Below, Ive set up several puzzles of this type, and a java applet
that lets you solve them. Each applet deals with one set of machines and poses
several conversions for you to try to solve.
How To Solve Mad Veterinarian Puzzles
Easy Three Animal Labratory
Original Three Animal Labratory
Hard Four Animal Labratory
Harder Four Animal Labratory
Schoolhouse Jelly Beans