# MURDEROUS MATHS BRAINBENDERS

### Here are a mixture of puzzles sent in by some of our regular visitors. Go on - give them a try! ANSWERS are given at the bottom of the page.

#### Try the DAILY KJARPOSKO PUZZLE! ### THE LUCKY SUM HU YI JIE of Singapore sent us this quaint little sum:     DO +  YOU + FEEL =LUCKY Can you substitute a digit for each letter so that the sum works?

 K J B B Q

#### THE KINGS MOVE

Moving one square at a time either to the right, down or diagonally down/right, how many ways can the KING reach the QUEEN?
Hint: there are 3 ways he can reach the Jack and 7 ways to reach each Bishop

### CLOCK WORK

#### 18:41:53 27/06

A clock shows the time and date in the HH:MM:SS DD/MM format as seen here. Using all the digits 0-9 once, what is the earliest time and date the clock can show? And the latest?

#### Have you ever tried the classic puzzle: The Twelve Coin Balance Problem submitted by Michael Jones

 THE SEVEN SQUARES by Frankie There are 28 spots here. Can you connect the spots with straight lines to make seven squares? You may not use any spot more than once. You might like to RIGHT CLICK on the image and then print it out!

### O and X's

#### This is another tough challenge from HU YI JIE!

 X X X O O O O X

### THE MAGIC SUM

##### from SAZZ
 H O C U S + P O C U S = P R E S T O

### DEVIOUS!

##### from HU YI JIE
 D E V I O U S x 8 = F I E N D I S H

#### CORRECTION 62 - 63 = 1 Obviously this sum is wrong, but it gives us two challenges: EASY: can you make this sum work by moving one little line? TOUGH: can you make it work by moving one digit?

FOUR SIMPLE SUMS
BELIAL asks: Can you replace the letters a-i with the digits 1-9 so that all four sums are correct?
WHICH IS BIGGER?

#### THE GHINJI'S CAGE

ADAM TAYLOR tells us about the cage in which the Great Rhun of Jepatti keeps his three tongued monster. The cage door has several different locks, and it can only be opened if every lock is undone.
The Grand Cahjoon and four slaves are in charge of guarding the door, but the Rhun has given out the keys in such a way that the Grand Cahjoon can only unlock the door if (any) one of the slaves is with him. The slaves can only unlock the door if at least three of them work together.
What was the smallest number of locks needed for the door?

#### FIVE VOWELS

ADAM TAYLOR asks:
What number, when written out in English contains all five vowels (a,e,i,o,u) and has no repeated letters?

#### THE 3 and 5 LITRE JARS

"S8" reminded us of this classic old puzzle:
I have two jars, one holds 3 litres and the other holds 5. How can I go to the stream and come back with exactly 4 litres of water?

### ANSWERS!

##### O and X's: The pattern of "H"s shows the shape of each piece
 H H H H H H H H H