Monthly Archives: March 2018

Pattern code circle-square-triangle


What letter combination goes to the question mark?

If you like this puzzle, the good news is that you can find more puzzles like this one in my book.

Matchsticks – 3-7=8?


1) 3-7=8?***/*****
Please correct the following equation by moving one matchstick:


1) 3-7=8?***/*****
Please correct the following equation by moving exactly two matchsticks:


You can check your solutions here

Originally I had only puzzle nr. 2. I’d like to thank reader Mr. Haubrich for pointing out nr 1.

New puzzles are published at least twice a month on Fridays.

It’s just chance – or is it?


Searching for puzzle apps on my android phone, I encountered “Probability puzzles” by “atorch”. Nice puzzles, although this type of puzzle never was one of my favorites and probably never will be. The app is working well, and the puzzles are varied. Well recommended.

Probability actually has its root in betting and games of chance. I was reminded of this when I was downloading the “Print and play” game Fazenda. Unfortunately the dice were missing.
In the rules of Fazenda, there are three dice. All 18 sides are either brown or blue.

Three dice**/*****
This weeks problem is this
Suppose that the three dice are identical, and that they each have 2 brown and 4 blue sides, what is the chance that at least two brown sides come up?

New puzzles are published at least twice a month on Fridays. Solutions are published after one or more weeks. You are welcome to discuss difficulty levels, variations and alternate solutions, but plz. don’t publish the solutions. The solutions will be published after one or more weeks, and yes, we know that you are smarted than any one else.

You can check your solution here