Challenge link

Riddles, one at a time

Which word is hidden in the code?

Video · Hard Challenge link
Answer

CLOUD

Inner S, B, E, K, T sit under outer C, L, O, U, D.

What fraction of the square is gold?

Video · Genius Challenge link
Answer

2/3

The dark part is 1 middle square + 4 halves = 3 of 9 squares, so gold is 6/9 = 2/3.

Which colour hides under the ? card?

Video · Medium Challenge link
Answer

B RED

Magenta stops green, yellow stops blue: red is left.

Which tank fills up FIRST?

Video · Hard Challenge link
Answer

E

The cap stops A. Water takes each lowest open pipe: B, then D, then E.

Which word fills the gap?

Video · Medium Challenge link
Answer

SHOW

SHOP to SHOW changes P to W; SHOW to SNOW changes H to N.

Three chests: gold, silver and bronze. The treasure is in one of them. Exactly one of these labels is true. Gold: 'The treasure is in here.' Silver: 'The treasure is not in here.' Bronze: 'The treasure is not in the gold chest.' Which chest holds the treasure?

Text · Hard Challenge link
Answer

SILVER

If it were in gold or bronze, two labels would be true. Only silver leaves exactly one true label (bronze's).

Full explanation on the blog

Challenge link