New Scientist - USA (2020-04-25)

52 | New Scientist | 25 April 2020

The back pages Puzzles





  

  

    

  

   



ACROSS

9 Furthest distance from

which a sound may be

heard (8,7)

10 Type of electric battery (3,4)

12 Pertaining to

the open sea (7)

13 Fruit of Ficus carica (6,3)

15 Sense (5)

16 Mathematical notation, also

known as Reverse Polish (7)

18 Net movement of solute

molecules through a

membrane into a region

of greater concentration (7)

21 Duck, Somateria

mollissima (5)

23 See 3 Down

24 Instrument that

measures current (7)

25 Online commentator (7)

28 Selenographic location

reference (5,10)

DOWN

1 Granular material (4)

2 Of fish, not cartilaginous (4)

3/23 Across/16/5 Note once

reportedly made under the

influence of NO 2

(1,5,2,9,8,10)

4 Respiratory organ (4)

5 See 3

6 Cardiac ___, heart failure (6)

7 Exposes to O 3 (8)

8 Loosens threaded

fastener (8)

11 Technology associated with

Guglielmo Marconi (5)

14 American songbird,

Passerella iliaca (3,7)

16 See 3

17 Lees; silt (8)

19 Forget-me-not (8)

20 Employed (2,3)

22 Rotary wings (6)

25 Outer layer of a tree (4)

26 g (4)

27 South American ratite (4)

Answers and the next cryptic crossword next week

Cryptic

Crossword #29

Answers

Quick crossword #56 Set by Richard Smyth Quick quiz #48 Puzzle set by Rob Eastaway

Quick quiz #48

Answers

ACROSS 1 Isthmus, 5 Mired,

8 Going, 9 Manumit,

10 Tessellations, 11 Putrid,

12 Preset, 15 Antiparticles,

18 Tamales, 19 Ascot,

20 Rides, 21 Sedated

DOWN 1 Ingot, 2 Twinset,

3 Magnetic poles, 4 Simply

5 Monitor lizard, 6 Romeo,

7 Data set, 11 Plaster, 13 Solicit,

14 Crises, 16 Timid, 17 Sated

1 Which white crystalline

solid with the chemical

formula C 10 H 8 is associated

with the characteristic smell

of mothballs?

2 In differential calculus,

velocity is the first derivative

of displacement with respect

to time, and acceleration the

second. What is the third?

3 Adipose tissue is an

orotund way of describing

which feature of our bodies?

4 The bacterium Bordetella

pertussis is responsible

for which respiratory

infection that is especially

common in young children?

5 In the northern climes

of Canada, where would

you be if you had wandered

into a muskeg?

Answers below

Naphthalene 1

Jerk, or the rate of 2

change of acceleration

e with tim

Fat 3

hooping coughW 4

arsh or bogIn a m 5

#56 Diffy squares

Diffy is a subtraction game. You choose

four whole numbers between 1 and 12

and write them on the corners of a square.

Then, you find the difference between

numbers at neighbouring corners and write

the answer at the midpoint (see above).

Join the midpoint numbers to form

a diamond, then repeat the process until

you end with four zeroes in a square

(which always happens, eventually).

In the example, there are five squares,

but with the right starting numbers you

can get more than five. Your challenge

is to find whole numbers between

1 and 12 that will do this.

• You are a high achiever if you get more
  than six Diffy squares.


• You are a genius if you get 10 Diffy
  squares.

Answer next week

#55 Ton up

The four parts that you divide 100

into can be worked out as follows:

100 = A + B + C + D = (M – 4) + (M + 4) + (M / 4)

+ (M × 4) for some value of M.

You could rewrite that as

100 = M + M + ¼M + 4M = 6¼M, so

400 = 25M or M = 16.

Therefore, the four parts are

12, 20, 4 and 64.

Our crosswords are

now solvable online

Available at

newscientist.com/crosswords

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12

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9 8

2

7 6

6 5

1

1

1 1

0 0

0 0

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