31 October 2014

220. Mathematical : 9 plus 2 is not equal to 5 plus 1

Easy Medium Hard Extreme


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

25 October 2014

219. Move 2 to create 6 squares

Easy Medium Hard Extreme


Move only 2 sticks to create 6 squares. The squares don't have to be equal in size.

18 October 2014

218. Square 4X4: Remove 9 leaving 7 rectangles

Easy Medium Hard Extreme


Remove 9 sticks leaving NO squares but 7 rectangles. The rectangles don't have to be equal in size.

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There are also other solutions

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11 October 2014

217. Rearrange 24 matchsticks

Easy Medium Hard Extreme


24 sticks are used to form 5 squares of size 1X1 and 1 square of size 2X2 in the figure above.

How would you rearrange the 24 sticks to form 8 squares of size 1X1 and 2 squares of size 2X2. Use the above layout as a clue.

04 October 2014

216. Create 6 rhombuses and 6 triangles

Easy Medium Hard Extreme


Remove 4 sticks leaving 6 rhombuses (also known as diamonds) and 6 triangles.

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The 6 triangles are easy, but the 6 rhombuses are:

AEFG, AFGB, AGBC, ABCD, ACDE and ADEF.

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29 September 2014

215. Squares in squares

Easy Medium Hard Extreme


Move 4 sticks to create 2 squares. The squares don't have to be equal in size.

27 September 2014

214. Triangle 3X3: Remove 4 leaving 7 triangles

Easy Medium Hard Extreme


Remove 4 matchsticks leaving 7 triangles. The triangles do NOT have to be equal in size.

Show Answer

There are:
5 triangles of size 1X1
2 triangles of size 2X2

There are also other solutions.

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25 September 2014

213. Change the L into 4 squares

Easy Medium Hard Extreme


It is possible to create 4 squares of equal size by moving only 2 sticks. (See Puzzle 151)

The challenge in this puzzle, however, is to move 4 sticks and to also create 4 squares of equal size. All the squares don't have to be connected.

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There are also other solutions.

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23 September 2014

212. Divide the Factory

Easy Medium Hard Extreme


Add 3 sticks to divide the factory into 2 equal parts. The size of the 2 parts must be equal, but the 2 shapes don't have to be the same.

Show Answer

It is not so clear to see the solution with matchsticks. The figure below shows that the 2 areas are exactly the same in size.

It should now be clear that:

A1 = A2
B1 = B2
C1 = C2
D1 + D2 = D3

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21 September 2014

211. Turn 7 sticks pointing downwards

Easy Medium Hard Extreme


Shown above are 8 matchsticks pointing UPWARDS. The challenge in this puzzle is to turn 7 sticks to point DOWNWARDS by following certain rules.

The rules are:
1. Always start with a stick pointing UPWARDS, skip the next 2 and turn the 3rd one. As an example, start with stick 4, skip 5 and 6 and turn 7 to point downwards.
2. You may only count from LEFT to RIGHT.
3. If you reach the end of the row before the end of counting, you need to continue to the beginning of the row again. As an example, if you start at 7, skip 8 and 1 and turn 2 downwards.

Show Answer

There are also other solutions, but the solution illustrated above is:

Step 1: Start with 1. Skip 2 and 3. Turn 4
Step 2: Start with 6. Skip 7 and 8. Turn 1
Step 3: Start with 3. Skip 4 and 5. Turn 6
Step 4: Start with 8. Skip 1 and 2. Turn 3
Step 5: Start with 5. Skip 6 and 7. Turn 8
Step 6: Start with 2. Skip 3 and 4. Turn 5
Step 7: Start with 7. Skip 8 and 1. Turn 2

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19 September 2014

210. Square 3X3: Move 2 creating 4 squares

Easy Medium Hard Extreme


Shown above are 3 squares of 3 different sizes.

Move 2 sticks to create 4 squares. All squares don't have to be equal in size.

13 September 2014

209. Tree to fish

Easy Medium Hard Extreme


Move 2 sticks to convert the tree into a fish swimming upwards.

07 September 2014

208. Move 3 creating 4 equal squares

Easy Medium Hard Extreme


Move 3 sticks to create 4 squares, all equal in size.

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There are also other solutions.

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31 August 2014

207. Star to 6 rhombuses

Easy Medium Hard Extreme


Move 6 sticks to create 6 Rhombuses (or 6 diamonds).

30 August 2014

206. Square 4X4: Remove sticks leaving no squares

Easy Medium Hard Extreme


What is the MINIMUM number of sticks to be removed leaving NO squares?

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A minimum of 10 sticks must be removed. There are also other solutions.

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24 August 2014

205. Move 2 creating 4 rectangles and 2 squares

Easy Medium Hard Extreme


Move only 2 sticks to create 4 rectangles and 2 squares.

17 August 2014

204. Mathematical : 1 plus 2 minus 3 is not 199

Easy Medium Hard Extreme


There is a bit of a cheekiness about this one!

Move only 1 stick to make the above equation true.

09 August 2014

203. Rectangle 4X2 : Remove 10 leaving 5 squares

Easy Medium Hard Extreme


Remove 10 sticks leaving exactly 5 squares. The squares don't have to be equal in size.

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There are also other solutions

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02 August 2014

202. No squares to 2 squares

Easy Medium Hard Extreme


There are no squares in the figure. Move 4 sticks to form 2 squares. All the sticks must form part of the formation of the 2 squares. The 2 squares don't have to be equal in size.

26 July 2014

201. A rhombus and a triangle

Easy Medium Hard Extreme


Move 2 sticks to create a rhombus and a triangle.

19 July 2014

200. Big squares and small squares

Easy Medium Hard Extreme


Shown above are 2 squares (size 3X3) and 1 smaller square (size 2X2)

Move 8 sticks to create 3 squares with sizes 2X2 and 4 smaller squares with sizes 1X1. All sticks must be flat on the surface.

13 July 2014

199. Create 3 parallelograms and 2 triangles

Easy Medium Hard Extreme


Add 9 sticks to form 3 parallelograms and 2 triangles.

06 July 2014

198. Move 1 stick creating 8 squares

Easy Medium Hard Extreme


There are 7 squares of size 1X1 in the figure.

Move only 1 stick to create 8 squares. 6 squares must be of size 1X1 and 2 squares of size 2X2.

05 July 2014

197. Two plus one is three

Easy Medium Hard Extreme


Another tongue-in-the-cheek!

The sum of the 3 numbers (1 + 5078 + 2) in the figure is 5081. Remove 3 sticks to change the answer of the sum to 3.

Show Answer

In presenting the answer you should first turn the puzzle around. Now remove the 3 sticks as shown. Then 2 PLUS 1 is 3!

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04 July 2014

196. Rectangle 4X2 : Remove 10 leaving 3 squares

Easy Medium Hard Extreme


Remove 10 sticks leaving 3 squares, all equal in size.

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There are also other solutions.

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