Puzzle 5
How many squares of any size on this chessboard do not contain a rook?
Puzzle Copyright © Kevin Stone
workings
hint
answer
print
www.brainbashers.com
/puzzle/zukb
share
Hint
There are no larger squares than size 4 x 4.
Answer
There are 110 squares without a rook.
Reasoning
There are 60 squares of size 1 x 1.
There are 35 squares of size 2 x 2.
There are 12 squares of size 3 x 3.
There are 3 squares of size 4 x 4.
Giving a total of 60 + 35 + 12 + 3 = 110 squares.
Puzzle 6
Below you will find 15 well-known five-letter words, with only their endings remaining.
Can you find the words?
--pay
--lad
--ior
--eue
--rva
--day
--voc
--yss
--gun
--pty
--til
--cay
--uke
--uze
--noe
Puzzle Copyright © Kevin Stone
workings
hint
answers
print
www.brainbashers.com
/puzzle/zxan
share
Hint
Five of the missing first letters are: F, P, T, C, B.
Answers
--pay = repay
--lad = salad
--ior = prior
--eue = queue
--rva = larva
--day = today
--voc = havoc
--yss = abyss
--gun = begun
--pty = empty
--til = until
--cay = decay
--uke = fluke
--uze = gauze
--noe = canoe
Puzzle 7
Starting in the bottom left corner and moving either up or right, adding up the numbers along the way, what is the largest sum that can be made?
2
3
5
4
1
3
2
4
3
4
5
1
3
5
2
3
3
2
3
1
1
4
2
4
4
Note: this puzzle is not interactive, and the numbers cannot be clicked.
Puzzle Copyright © Kevin Stone
workings
hint
answer
print
www.brainbashers.com
/puzzle/zqio
share
Answer
The largest sum that can be made is 28.
Puzzle 8
How much soil is there …
… in a circular hole 2 metres deep and 1 metre across?
workings
hint
answer
print
www.brainbashers.com
/puzzle/zpof
share
Hint
How much soil is in any hole?
next >