27 April 2016

363. Moving geometric shapes

Easy Medium Hard Extreme


The geometric shapes in the figure above are:

A: hexagon
B: square
C: rhombus
D: equilateral triangle
E: trapezoid
F: rhombus

Remove the 7 matchsticks INSIDE the big shape. The OUTSIDE matchsticks must stay in exactly the same position. The challenge now is to place the 7 matchsticks back into the big shape, but with the 6 geometric shapes above all in different positions.

24 April 2016

362. Move 3 to create 4 rhombuses

Easy Medium Hard Extreme


Move 3 matchsticks to create 4 rhombuses. (also known as diamonds) All matchsticks must remain flat on the surface.

23 April 2016

361. Noughts and crosses board

Easy Medium Hard Extreme


Place the 6 broken matchsticks on the noughts and crosses board so that there are not more than 2 broken matchsticks in any row. Rows could be vertical, horizontal or diagonal.

Show Answer

There are also other solutions.

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20 April 2016

360. Creating a circle

Easy Medium Hard Extreme


Create a circle by rearranging the 8 matchsticks above. All the matchsticks must be flat on the surface.

(You should think out of the box with this one. The solution is not perfect but almost perfect.)

Show Answer

The circle is in the middle.

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19 April 2016

359. Change the arrows

Easy Medium Hard Extreme


The 2 arrows above are pointing in a Westerly direction. Move 4 matchsticks to make it point in a South-Westerly direction.

17 April 2016

358. Move 1 to create 3 squares

Easy Medium Hard Extreme


Move only 1 matchstick to create 3 squares.

15 April 2016

357. Staggered triangles

Easy Medium Hard Extreme


Move 3 matchsticks to create 4 equilateral triangles (i.e. all three sides of one triangle are equal). The triangles don't have to be equal in size, but all matchsticks must be flat on the surface.

10 April 2016

356. Move 1 to make equation true

Easy Medium Hard Extreme


Move only 1 matchstick to make the equation true.

09 April 2016

355. Move 4 to create 5 rhombuses

Easy Medium Hard Extreme


Move 4 matchsticks to create 5 rhombuses. (also called diamonds) All the rhombuses don't have to be equal in size.

03 April 2016

354. Divide the figure into 2 equal areas

Easy Medium Hard Extreme


Add 2 matchsticks to the figure above to create 2 areas equal in SIZE and SHAPE.

02 April 2016

353. Roman numerals: 6 plus 2 is not 5

Easy Medium Hard Extreme


Move only 1 matchstick to make the equation true.

28 March 2016

352. Move 5 to create 3 rhombuses

Easy Medium Hard Extreme


Move 5 matchsticks to convert the 3 triangles into 3 rhombuses. All matchsticks must be flat on the surface.

27 March 2016

351. Move 2 to create 7 squares

Easy Medium Hard Extreme


Move only 2 matchsticks to create 7 squares. There are 3 rules:

1. All the matchsticks must be flat on the surface.
2. The squares don't have to be equal in size.
3. The squares don't have to be linked.

26 March 2016

350. Odd one out

Easy Medium Hard Extreme


Which one of the above 4 structures is the odd one out?

Show Answer

Two rectangles are formed in each structure, except in number 3.

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25 March 2016

349. Ice cream cone

Easy Medium Hard Extreme


Move 3 matchsticks to reduce the size of the big ice cream cone by half and creating 2 smaller cones at the same time.

24 March 2016

348. Mathematical: Take away 4 to make equation true

Easy Medium Hard Extreme


The equation is not true. TAKE AWAY 4 matchsticks to make it true.

21 March 2016

347. Move 6 to create 10 squares

Easy Medium Hard Extreme


Move 6 matchsticks to create 10 squares. The squares don't have to be equal in size, but all the matchsticks must be flat on the surface.

Show Answer

There are 7 squares of size 1X1 and 3 of size 2X2. They are:
ACHF
BDJG
CEKH

Hide Answer

20 March 2016

346. Unbalanced structure

Easy Medium Hard Extreme


Three cubes are glued together to form a structure as shown above. The structure is unbalanced, as it can easily tilt to the right.

Move 5 matchsticks to place the same structure in a more stable position to prevent the tilting.

19 March 2016

345. Divide the land into 4 parts

Easy Medium Hard Extreme


Shown above is a piece of land with 4 trees. (the broken matchsticks)

Divide the land into 4 parts by adding matchsticks to the layout. The 4 parts must be equal in size and shape with a tree on each part.

14 March 2016

344. Cube to triangles

Easy Medium Hard Extreme


Move 2 matchsticks to change the cube to 4 equal triangles.

13 March 2016

343. Get 4 triangles

Easy Medium Hard Extreme


You would have to think out of the box with this one!

Move only 1 matchstick to get 4 triangles. All the matchsticks don't have to be flat on the surface.

12 March 2016

342. Move 7 to create 7 rhombuses

Easy Medium Hard Extreme


Move 7 matchsticks to create 7 Rhombuses, also known as diamonds. All rhombuses must be equal in size.

06 March 2016

341.The 5 trapezoids

Easy Medium Hard Extreme


Shown above are 5 identical trapezoids forming a specific shape. Rearrange the matchsticks on the INSIDE of the shape to form 5 trapezoids again, but all trapezoids must now be in different positions within the shape.

05 March 2016

340. Move 4 and create 10 triangles

Easy Medium Hard Extreme


Move 4 matchsticks to create 10 triangles. All matchsticks must be flat on the surface and don't have to be equal in size.

Show Answer

There are 8 small triangles and 2 bigger triangles (ACE and DBF)

Hide Answer

04 March 2016

339. Reduce the squares from 4 to 2

Easy Medium Hard Extreme


There are 4 squares of 2 different sizes in the figure above. Confirm that you agree.

Move only 2 matchsticks to form 2 equal sized squares.

Show Answer

The 2 squares are ACGE and BDHF.

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