Âé¶¹´«Ã½

Âé¶¹´«Ã½ puzzle #14: the H coins problem, plus a science quiz

24 July 2019

#14 The H coins problem

Âé¶¹´«Ã½. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Seven coins have been placed in the “H” shape above. Altogether there are five lines of three, including the diagonals.

Your challenge is to place two more coins so that you can make 10 straight lines of three. No stacking of coins or other sneaky trick is required.

If you find a way to do this, give yourself a silver medal. If you find a second way to do it that isn’t a mirror image of the first, award yourself a gold.

Answer next week

#13 Snail party

Solution

As the four snails move towards…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with Âé¶¹´«Ã½ events and special offers.

Sign up

To continue reading, today with our introductory offers

or

Existing subscribers

Sign in to your account
Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop