Puzzle 17
How many squares, of any size, are on a board divided up into 6 squares by 6 squares?
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Hint
How many 1 x 1 squares are there?
Answer
91 squares.
Reasoning
Squares of size:
1 x 1 = 36
2 x 2 = 25
3 x 3 = 16
4 x 4 = 9
5 x 5 = 4
6 x 6 = 1
Total = 36 + 25 + 16 + 9 + 4 + 1 = 91.
Puzzle 18
If tomorrow's yesterday is today…
…what day is yesterday's tomorrow?
Puzzle Copyright © Kevin Stone
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Hint
Tomorrow's yesterday is always today.
Answer
Today.
Reasoning
Tomorrow's yesterday is always today.
And yesterday's tomorrow is also always today.
Puzzle 19
Place letters into the grid such that every row, column, and 2 x 2 block has letters (in any order) that form a common word. Each letter is only used once, and no letter is repeated in the rows / cols / blocks.
Letters allowed: D O G D A Y S
Note: this puzzle is not interactive, and the squares cannot be clicked.
Puzzle Copyright © Alan Stillson and Frank Longo
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Hint
Column 4 contains a D.
Answer
D
A
C
S
L
Y
O
K
A
T
E
D
G
S
P
I
Across: CADS, YOLK, DATE, PIGS
Down : GLAD, STAY, COPE, SKID
Boxes : LADY, SOCK, STAG, PIED
Other anagrams of these words are OK as long as they don't change the answer grid.
Puzzle 20
Looking at a usual clock, how many times …
… does the minute hand pass the hour hand between midday and midnight?
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Hint
Try this with a watch or clock yourself.
Answer
Ten times.
Try this with a watch or clock yourself!
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