The questions

1 Which artist’s grave was marked with a black square?

2 What, significantly, was http://info.cern.ch/hypertext/WWW/TheProject.html?

3 Inaccessible Island is part of which archipelago?

4 Which writer was described as “a penis with a thesaurus”?

5 Which US first lady didn’t change her surname after marriage?

6 Who appeared at the Massabielle grotto?

7 Which gas was discovered during an 1868 total eclipse?

8 Who are Big, Little, Four-Eyed, Eat and No?

What links

9 Chinese dog; quick look; mountain top; irritation?

10 Continental; Northwest; TWA; Pan Am?

11 Emperor Frederick II; Cathars; Baltic pagans; Turks?

12 Manoj; Mallord; Mallahan; Maud; Morgan?

13 Bree; BoJack; Mister Ed?

14 TS40 tower hi-fi; CPC 464 computer; Em@iler phone?

15 Susan Sontag; Indira Gandhi; Miliband brothers; Dickie Davies?

2017 total solar eclipse. Photograph: Getty Images/iStockphoto

The answers

1 Kazimir Malevich.

2 First web page address.

3 Tristan da Cunha.

4 John Updike (quoted by David Foster Wallace).

5 Eleanor Roosevelt.

6 Virgin Mary (to St Bernadette at Lourdes).

7 Helium.

8 Five guys named Moe (in song and Louis Jordan musical).

9 Homophones: Peke; peek; peak; pique.

10 Defunct American airlines.

11 All had crusades called against them.

12 Initial M in the arts: M Night Shyamalan; JMW Turner; James M Cain; LM Montgomery; EM Forster.

13 Talking horses: Chronicles of Narnia; Netflix series; TV series.

14 Amstrad products.

15 Streaks of white/grey hair.

