03 December 2016

473. The matching pair

Easy Medium Hard Extreme


How quick is your brain to find the 2 figures that match perfectly?

Show Answer

Numbers 5 and 9 match perfectly.

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02 December 2016

472. Rectangle 3X2: Move 3 to create 5 squares

Easy Medium Hard Extreme


Move 3 matchsticks to create 5 squares. All the squares must be equal in size.

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There are many other solutions.

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25 November 2016

20 November 2016

470. Roman numerals: 5 minus 4 is not 4

Easy Medium Hard Extreme


Another tongue-in-cheek!

How would you show that the above statement is correct by just adding 1 matchstick?

19 November 2016

469. Broken matchstick migration

Easy Medium Hard Extreme


Place 6 broken matchsticks (2 with heads and 4 without heads) as shown in the figure left above. The challenge is to move the broken matchsticks and to end as shown in the figure right. Only 1 broken matchstick may be in a square when moving.

Can you achieve this in only 9 moves?

Show Answer

The following is 1 solution:
E to C
F to A
C to F
D to C
H to B
I to D
F to I
G to F
I to E

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18 November 2016

468. Move 4 to create 2 squares

Easy Medium Hard Extreme


Move 4 matchsticks to create 2 squares. The 2 squares must NOT be equal in size.

12 November 2016

467. Building with blocks

Easy Medium Hard Extreme


The 4 blocks above (A, B, C and D) are used to build the shape as shown. In how many different ways can you construct the same shape by just moving the blocks within the shape? To achieve this, only the matchsticks inside the shape may be moved.

Show Answer

There are 5 solutions - the one in the original question and the 4 above.

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11 November 2016

466. From 0 to 7 triangles

Easy Medium Hard Extreme


There is not a single triangle in the layout above. However, by just adding 2 matchsticks you could have 7 triangles. How would you do this? All matchsticks don't have to be flat on the surface.

Show Answer

The 7 triangles are:

ACB
AGD
GFH
CJH
JEF
CEG
BED

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06 November 2016

465. Remove 12 to form 3 squares

Easy Medium Hard Extreme


Take away 12 matchsticks to form 3 squares. The 3 squares must be equal in size.

Show Answer

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There are also other solutions.

05 November 2016

464. Mathematical: 4 plus 3 is not 6

Easy Medium Hard Extreme


The equation above is not true. Move only 1 matchstick to make it true.

04 November 2016

463. Change to equal ratio

Easy Medium Hard Extreme


The sizes of the 3 shapes are in ratio of 5:3:1. Move only 1 matchstick to change the ratio to 3:3:3.

30 October 2016

462. Move 6 to create 4 squares

Easy Medium Hard Extreme


Move 6 matchsticks to create 4 squares. Exactly 3 of the 4 squares must be equal in size.

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There are also other solutions.

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29 October 2016

461. Create 4 equal shapes

Easy Medium Hard Extreme


Move 4 matchsticks to create 4 shapes equal in size and shape. When added together the size of the 4 shapes must be 16 square matchsticks.

28 October 2016

460. Spokes to triangles

Easy Medium Hard Extreme


The angles formed by any 2 adjacent spokes are all the same. Move 4 matchsticks to create 4 equal triangles.

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There are also other solutions.

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23 October 2016

459. The Horse

Easy Medium Hard Extreme


Move only 1 matchstick to make the horse standing on its hind legs.

22 October 2016

458. Move 2 to create 6 squares

Easy Medium Hard Extreme


Shown in the figure above are 7 squares of size 1X1 and 2 of size 2X2.

Move 2 matchsticks to reduce the number of squares to 6, but now all squares must be equal in size.

21 October 2016

457. Triangle 3X3: Remove 4 leaving 4 triangles

Easy Medium Hard Extreme


Take away 4 matchsticks to form 4 triangles. The triangles don't have to be equal in size.

Show Answer

The 4 triangles are:

2 triangles of size 1X1
1 triangle of size 2X2
1 triangle of size 3X3

There are also other solutions.

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16 October 2016

456. Mathematical: 4 minus 4 is not 1

Easy Medium Hard Extreme


Solve this within 30 seconds and you are a genius!

Move 3 matchsticks to make the equation true.

15 October 2016

455. Skiing out of control

Easy Medium Hard Extreme


Everything did not go well for this out of control skier - it ended with his head in the snow and skis in the air!

Move only 3 matchsticks to show how his skiing ended.

14 October 2016

454. Square 3X3: Take away 4 leaving 9 squares

Easy Medium Hard Extreme


Take away 4 matchsticks to leave 9 squares. The squares don't have to be equal in size.

09 October 2016

453. All the arrows

Easy Medium Hard Extreme


Move 6 matchsticks to create 6 triangles. All the triangles must be equal in size.

08 October 2016

452. Divide into 2 equal shapes

Easy Medium Hard Extreme


Add 4 matchsticks to divide the figure into 2 parts. The 2 parts must be equal in size and shape.

07 October 2016

451. Create 3 equal squares

Easy Medium Hard Extreme


The broken matchsticks are exactly half the length of the full length matchsticks. How would you create 3 squares, all equal in size, with the 8 matchsticks? All matchsticks don't have to be flat on the surface.

06 October 2016

450. Remove 6 to leave 6 squares

Easy Medium Hard Extreme


Take away 6 matchsticks to leave 6 squares. All squares must be equal in size.

Show Answer

There are also other solutions.

Hide Answer

03 October 2016

449. Move 4 and create 11 triangles

Easy Medium Hard Extreme


Move 4 matchsticks to create 11 triangles. All triangles don't have to be equal in size.

Show Answer

There are 9 triangles of size 1X1 and 2 triangles of size 2X2. (ACE and DBF)

Hide Answer

02 October 2016

448. Mathematical: 3 plus 7 is not 8

Easy Medium Hard Extreme


Take away 3 matchsticks to make the above equation true. Can you find both solutions?