Each month, a new set of puzzles will be posted. Â Come back next month for the solutions and a new set of puzzles, or subscribe to have them sent directly to you.
|
In EQUATE+ puzzles, each row, column and diagonal is a mathematical expression or equation. Use the numbers 1 to 9 to satisfy each equation, using each number only once. The numbers provided in each puzzle are to get you started and depend on the puzzle’s level of difficulty (i.e., +3 = least and +0 = most). Find the remaining numbers that satisfy all the resulting equations. Note: multiplication (x) and division (/) are performed before addition (+) and subtraction (-). EQUATE+3
|
EQUATE+2
|
EQUATE+1
|
EQUATE+0
|
Feedback
There are more than one way of doing these puzzles and may well be more than one answer. Â Please let me and others know what alternatives you find by commenting below. Â We also welcome general comments on the subject and any feedback you'd like to give.
If you have a question that needs a response from me or you would like to contact me privately, please use the contact form.
Get more puzzles!
If you've enjoyed doing the puzzles, consider ordering the books;
- Book One - 150+ of the best puzzlesÂ
- Book Two - 200+ with new originals and more of your favourites
Both in a handy pocket sized format. Â Click here for full details.
Last month's solutions
Click here to download the printable version
Einstein’s Famous RiddleÂ
Einstein’s Riddle, also known as the Zebra Riddle, is a very famous puzzle, and it is said that only 2% of the population could solve it. Rumoured to have been written by Einstein as a boy, the mysterious true author of the riddle contains a line-up of geniuses, including famed author Lewis Carroll.
The Puzzle
There are 5 houses in a row, each painted a different colour. A person of a different nationality lives in each house. These 5 owners keep different pets, drink different beverages, and enjoy playing different activities. The question is: Who owns the fish?  Can you solve Einstein’s Riddle using the following clues?
- The British man lives in the red house.
- The Swedish man keeps dogs as pets.
- The Danish man drinks tea.
- The German plays soccer.
- The green house’s owner drinks coffee.
- The owner who plays baseball has birds.
- The owner who plays basketball lives next to the one who keeps cats.
- The Norwegian lives in the first house.
- The owner who plays the violin drinks beer.
- The owner of the yellow house plays the piano.
- The owner living in the center house drinks milk.
- The owner who keeps the horse lives next to the one who plays the piano.
- The green house is on the immediate left of the white house.
- The Norwegian lives next to the blue house.
- The owner who plays basketball lives next to the one who drinks water.
| House | 1 | 2 | 3 | 4 | 5 |
| Nationality | Norwegian | Danish | British | German | Swedish |
| Colour | Yellow | Blue | Red | Green | White |
| Pet | Cats | Horse | Birds | FISH | Dogs |
| Drink | Water | Tea | Milk | Coffee | Beer |
| Plays | Piano | Basketball | Baseball | Soccer | Violin |
Happy New Year!!!🎉
Cheers to 2025!
XOXO