Albert Einstein’s Who’s Fish Answer
So who owns the Walleye Pike?
The coffee drinking, princes smoking, green house owning German.
I put all the details in a grid. Then I recursed through the grid several times.
Through a process of elimination and logic here is a chart of the results.
| Dane | Dane | Dane | Dane | Dane |
| Swede | Swede | Swede | Swede | Swede |
| German | German | German | German | German |
| Norwegian | Norwegian | Norwegian | Norwegian | Norwegian |
| Brit | Brit | Brit | Brit | Brit |
| Red | Red | Red | Red | Red |
| Green | Green | Green | Green | Green |
| Yellow | Yellow | Yellow | Yellow | Yellow |
| Blue | Blue | Blue | Blue | Blue |
| White | White | White | White | White |
| Milk | Milk | Milk | Milk | Milk |
| Tea | Tea | Tea | Tea | Tea |
| Beer | Beer | Beer | Beer | Beer |
| Coffee | Coffee | Coffee | Coffee | Coffee |
| Water | Water | Water | Water | Water |
| Pall Malls | Pall Malls | Pall Malls | Pall Malls | Pall Malls |
| Dunhills | Dunhills | Dunhills | Dunhills | Dunhills |
| Blends | Blends | Blends | Blends | Blends |
| Bluemasters | Bluemasters | Bluemasters | Bluemasters | Bluemasters |
| Princes | Princes | Princes | Princes | Princes |
| Cats | Cats | Cats | Cats | Cats |
| Dogs | Dogs | Dogs | Dogs | Dogs |
| Birds | Birds | Birds | Birds | Birds |
| Horses | Horses | Horses | Horses | Horses |
| Walleye Pike | Walleye Pike | Walleye Pike | Walleye Pike | Walleye Pike |