| Easy | Medium | Hard | Extreme |
Move 4 matchsticks to create 2 equal triangles.
30 June 2016
26 June 2016
394. Mathematical: 5 minus 2 is not 8
| Easy | Medium | Hard | Extreme |
Move 2 matchsticks to make the statement true. Consider yourself very good if you can solve it within 30 seconds!
25 June 2016
393. Rectangle 4X2: Remove 4 to create 5 squares
| Easy | Medium | Hard | Extreme |
Take away 4 matchsticks to create 5 squares. The squares must all be equal in size.
24 June 2016
392. Vertical Symmetry
| Easy | Medium | Hard | Extreme |
Three shapes are cut from a piece of cardboard and placed as shown above to form a combined shape. If the matchsticks on the inside of the shape are ignored, you will note that the combined shape is not symmetrical along any vertical axis.
However, a combined shape with vertical symmetry (again ignoring the inside matchsticks) can be created by flipping and/or rotating one of the shapes. Show how you would do this by moving only 3 matchsticks to create a combined shape that is vertically symmetrical.
The piece of cardboard in the middle is flipped vertically and then rotated 90 degrees clockwise.
22 June 2016
391. Square 3X3: Move 5 to create 4 squares
| Easy | Medium | Hard | Extreme |
Move 5 matchsticks to create 4 squares. In your solution there must be:
- at least 2 squares of size 3X3
- at least 1 square of size 2X2
- at least 1 square of size 1X1
- The 2 squares of size 3X3 are AIKF and BJLG
- The 2X2 square is CEHF
- The 1X1 square is ABDC
Below is the suggested way of constructing the solution above:
1. Place 3x3 squares overlapping, since only 5 can be moved, it has to come from the internals of the 3x3 squares.
2. Leave a 2x2 square within the original.
3. In order for the 3x3 to overlap, there has to be a line cutting the 2x2 into 1/2s.
There are also other variations of this solution.
- The 2X2 square is CEHF
- The 1X1 square is ABDC
Below is the suggested way of constructing the solution above:
1. Place 3x3 squares overlapping, since only 5 can be moved, it has to come from the internals of the 3x3 squares.
2. Leave a 2x2 square within the original.
3. In order for the 3x3 to overlap, there has to be a line cutting the 2x2 into 1/2s.
There are also other variations of this solution.
20 June 2016
390. Transparent 98
| Easy | Medium | Hard | Extreme |
You have printed 2 digital numbers on 2 different sheets of transparency film. When sheet 1 is placed exactly on top of sheet 2 (or vice versa) it shows the digital number 98 as illustrated above. You then discover that the number on sheet 1 plus the number on sheet 2 is also equal to 98. What are the 2 digital numbers printed on the 2 sheets?
19 June 2016
389. The 5 smaller farms
| Easy | Medium | Hard | Extreme |
Divide the above farm into 5 smaller farms by adding 11 matchsticks. The 5 farms must be equal in size and shape.
18 June 2016
388. Snake to 2 squares
| Easy | Medium | Hard | Extreme |
Move only 2 matchsticks to convert the snake into 2 squares.
17 June 2016
387. Series of matchsticks
| Easy | Medium | Hard | Extreme |
Try to work out the logic behind this series of 7 matchstick shapes and replace the question mark.
The row consists of the lower matchsticks of the numbers 1 to 7 and number 8 is the next one to replace the "?".
16 June 2016
386. Reduce the area to 6 square units
| Easy | Medium | Hard | Extreme |
If the length of 1 matchstick is 1 unit, the area of the shape above is 9 square units. Move 6 matchsticks to change the area to 6 square units.
12 June 2016
385. Matchstick somersault
| Easy | Medium | Hard | Extreme |
An amazing little stunt with matchsticks! It is very important to build the structure EXACTLY as shown above and on a flat and hard surface.
Without touching matchstick A, how can you make matchstick A do a somersault (or a flip) in the air?!!
Tap down quick and hard with your finger on the circled area and see what happens. You might not get it right the first time, but just try again!
11 June 2016
384. Move 2 to create 6 triangles
| Easy | Medium | Hard | Extreme |
There are 6 triangles in the figure above. All the triangles are equal in size.
Move 2 matchsticks to still have 6 triangles, but now all the triangles don't have to be equal in size.
10 June 2016
05 June 2016
382. Divide into 6 shapes
| Easy | Medium | Hard | Extreme |
Add matchsticks to divide the layout above into 6 shapes. The shapes must be equal in size and shape. Each shape must contain 2 broken matchsticks. The broken matchsticks may not be moved.
04 June 2016
381. Move 6 to drive a Mitshubishi
03 June 2016
380. Big and small square
| Easy | Medium | Hard | Extreme |
The small square is exactly in the middle of the big square. Move 4 matchsticks to create 3 squares. All squares don't have to be equal in size.
02 June 2016
379. Rhombus and square
| Easy | Medium | Hard | Extreme |
Shown above is a rhombus (also known as a diamond) and a square. The distance between A and B is exactly the length of one matchstick. Move 3 matchsticks to create:
- a square
- a rhombus
- 2 equilateral triangles.
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