It’s a long time ago we had a matchstick puzzle. THis is a variant of what my old friend Biep posed me.
Make the following equation correct by moving just 1 matchstick:
Difficulty: ****/*****
New puzzles are published occasionally on the first Friday of the month. Solutions are published after one or more weeks. You are welcome to remark on the difficulty level of the puzzles, discuss alternate solutions, and so on. Puzzles are rated on a scale of 1 to 5 stars. You can check your solution here.
It’s a while ago we had matchstick puzzles, so here’s one again. And yes, you are perfectly right, matches are on the way out with electric cooking and all such. Luckily, you can use nails or toothpick sticks instead. I mentioned it in a previous post and I’m now also mentioning it in the title of the post.
In the image below you see 18 matchsticks aka nails aka toothpicks making up six squares. Now re-arrange the 18 matchsticks to make twenty.
New puzzles are published at least twice a month on Fridays. You can check your solution here.
Before Nov 6 we didn’t have a match stick puzzle for quite a while, so let’s have one again.
1) How many rectangles are there in this square?**/*****
2) How many rectangles are there in an mxn rectangle?**/*****
The previous puzzle can be generalized from 3×3 to any size, an m x n rectangle. How many rectangles are there in an mxn rectangle?
New puzzles are published at least once a month on Fridays. Solutions are published after one or more weeks. You are welcome to remark on the difficulty level of the puzzles, discuss alternate solutions, and so on. The difficulty of puzzles is rated on a scale of 1 to 5 stars. You can check your solutions here.
It’s a while ago since we had matchstick puzzles. And the last series we had, were with numbers 0-9 as found on digital watches.
This puzzle is a bit different. You see
4 (or 6) parallelograms*/*****
Move to matches to make 3 squares
New puzzles are published at least once a month on Fridays. Solutions are published after one or more weeks. You are welcome to remark on the difficulty level of the puzzles, discuss alternate solutions, and so on. Puzzles are rated on a scale of 1 to 5 stars. You can check your solutions here.
1) 3-1=8?***/*****
Please correct the following equation by moving two matchsticks:
You can check your solution here
New puzzles are published at least twice a month on Fridays.
Have a look at at this diamond – it is made up of 10 triangles.
Your challenges are:
1) 8 triangles**/*****
Move 4 matchsticks and have 8 triangles
2) 7 triangles**/*****
Move 4 matchsticks and have 7 triangles
3) 6 triangles**/*****
Move 4 matchsticks and have 6 triangles
4) 5 triangles**/*****
Move 4 matchsticks and have 5 triangles
You can check your solution here
New puzzles are published at least twice a month on Fridays.
Our daughter Margreet installed the “100 doors challenge” on her phone, and this weeks puzzles is based on one of the levels.
If 178 gives 237, what does 640 give?
You can check your solution here
New puzzles are published at least twice a month on Fridays.
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.
What do you read when you superposition these three figures?
You can check your solution here
New puzzles are published twice a month on Fridays. Solutions are revealed one or more weeks later.
This puzzle was inspired by the “100 doors” app, and by the Dutch translation of 1000 casse-tete et enigmas by Piere Berloquin.
justpuzzles 