23 September 2016

445. House to squares

Easy Medium Hard Extreme


Move 4 matchsticks to convert the house into 4 squares. The 4 squares must be equal in size and all matchsticks must be flat on the surface.

Show Answer

The 4 equal squares are ADLH, BEMJ, CFNK and DGPL

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18 September 2016

444. Mathematical: 3 plus 3 is not 8

Easy Medium Hard Extreme


Move only 1 matchstick to make the equation true. Can you find both solutions?

17 September 2016

443. Find the 3 whole numbers

Easy Medium Hard Extreme


Broken matchsticks WITH heads, broken matchsticks WITHOUT heads and the EMPTY squares each represent 3 different whole numbers. The numbers outside the square are the sums of each respective row and column. What are the values of the 3 whole numbers?

16 September 2016

442. Empty portrait frames

Easy Medium Hard Extreme


Shown above are 3 empty portrait frames of size 3X3 each.

How would you place these frames together in a way that will result in a figure that has 8 squares of any size? The 3 frames may overlap, but you may not change the shape or size of any frame. All matchsticks must be flat on the surface.

Show Answer

The 8 squares are:

3 Original frames:
ABKN, CEOQ, FJRS

2 Squares of size 2X2:
CDLN, FHPQ

3 squares of size 1X1:
DEGH, FGMN, LMOP

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11 September 2016

441. Bridge over water

Easy Medium Hard Extreme


You need to build a bridge from the land (Point A) over the water to the island (Point B). Using only 2 matchsticks will not get you there as shown with the 2 dotted matchsticks.

How would you construct the bridge from A to B using the 5 matchsticks given to you?

This puzzle is similar to but different from puzzle 51 and puzzle 436.

10 September 2016

440. Square 3X3: Take away 8 to leave 4 squares

Easy Medium Hard Extreme


Take away 8 matchsticks to leave 4 remaining squares. The squares don't have to be linked (connected), but must be equal in size.

09 September 2016

04 September 2016

438. Move 2 to create 6 squares

Easy Medium Hard Extreme


Move 2 matchsticks to create 6 squares. All squares don't have to be equal in size and also don't have to be linked.

03 September 2016

437. Triangle 3X3: Remove 9 leaving 2 unequal triangles

Easy Medium Hard Extreme


Take away 9 matchsticks to leave only 2 triangles. The 2 triangles must NOT be equal in size.

02 September 2016

436. Bridge over river

Easy Medium Hard Extreme


You are tasked to build a "bridge" over a river with only 4 matchsticks. The length of a matchstick is less than the width of the river as shown above. How would you do this?

28 August 2016

435. Move 4 to create 4 unequal squares

Easy Medium Hard Extreme


There are 4 equal squares in the figure above. Move 4 matchsticks so that you still have 4 squares, but now all squares don't have to be equal in size.

27 August 2016

434. Matchstick heads only

Easy Medium Hard Extreme


It's easy to create a square with 4 matchsticks, but can you do it in such a way that only the 4 matchstick heads touch the surface?

26 August 2016

433. Mathematical: 8 plus 9 is not 4

Easy Medium Hard Extreme


Take away 3 matchsticks to make the above equation true. There are 3 correct solutions. Can you find them all?

21 August 2016

432. Triangle 3X3: Take away 2 leaving 8 triangles

Easy Medium Hard Extreme


Take away 2 matchsticks to form 8 triangles. Your solution must have triangles of 3 different sizes.

20 August 2016

431. Dominoes in a rectangle

Easy Medium Hard Extreme


Shown above are 5 domino tiles placed in such a way that it forms a big rectangle.

In how many different ways can you fit the 5 domino tiles into the big rectangle? You may only move the matchsticks on the inside of the big rectangle.

Show Answer

There are 8 ways to fit the domino tiles into the big rectangle.

Solutions A, B and C: 1 vertical- and 4 horizontal domino tiles.
Solutions D, E, F and G: 3 vertical and 2 horizontal domino tiles.
Solution H: 5 vertical domino tiles.

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19 August 2016

430. Move 3 to create 5 squares

Easy Medium Hard Extreme


Shown above are 5 equal squares and all squares are linked (or connected).

Move 3 matchsticks to still have 5 squares, but with at least 1 square NOT connected to the other 4. All squares must be equal in size.

Show Answer

There are also other solutions.

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18 August 2016

429. Rectangle 4X2: Take away 5 to create 4 squares

Easy Medium Hard Extreme


Take away 5 matchsticks to create 4 squares. Your solution must have at least 1 square of size 2X2.

Show Answer

There are many other solutions.

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14 August 2016

427. Form 8 rows of 5 matchsticks

Easy Medium Hard Extreme


Use 24 matchsticks to form a shape with 8 rows of 5 matchsticks per row. The figure above shows the different ways of forming rows. (You should have 5 matchsticks per row and not 3 as in the examples.)

13 August 2016

426. Convert the snake into 2 squares

Easy Medium Hard Extreme


This puzzle is similar to but different from Number 425.

Move 2 matchsticks to create 2 squares. The 2 squares must be different in size.

12 August 2016

425. Convert the snake into 3 squares

Easy Medium Hard Extreme


This puzzle is similar to but different from Number 426.

Move 3 matchsticks to create 3 squares. The 3 squares must be different in size.

11 August 2016

424. Reduce from 4 to 2 square matchsticks

Easy Medium Hard Extreme


This puzzle is similar to but different from Number 412.

In the figure above 12 matchsticks are used to form 4 square matchsticks. Make sure to understand that A plus B is exactly 1 square matchstick.

Your challenge now is to rearrange the 12 matchsticks to form 2 square matchsticks. All matchsticks must be used and all matchsticks must be flat on the surface.

Solving this one without cheating means you are a genius!

Show Answer

It should be clear that A plus B is 1 square matchstick as well as C plus D.

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09 August 2016

08 August 2016

07 August 2016

421. Move 3 to create 6 squares

Easy Medium Hard Extreme


There are 9 squares in the layout above: 7 of size 1X1 and 2 of size 2X2.

Move 3 matchsticks to create 6 squares. All squares must now be equal in size.