Night Swim, artwork by Mira Castell
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October 2026

Night Swim

Eleven at night, a heatwave, and one swimmer who has the pool to themselves.

1,000

50 × 70 cm

4 of 5

10 to 12 hours

£26

a month for members, shipping included

Night Swim puzzle box

The story behind it

Why it looks like this

Painted in gouache after a week of heat in Barcelona, when the only cool place left was the pool after dark.

The sky and the pool are two different blues. Sort by blue first, then by lane line, and the swimmer will find you.

In every box
2 mm
blue-core board, cut in Leeds
1
poster of the art, for framing or cheating
0 g
of plastic in the box, ever
by the 5th
of the month, tracked, to your door
Portrait of Mira Castell

Meet the artist

Mira Castell

Night is my favourite colour. It's about nine different blues.

More from this artist →

While you’re here

More this month

knoblet

Puzzles worth clearing the table for.

Hint drops, first

We tease next month's puzzles a week early. Get the hints before anyone else, plus the odd discount code.

© 2026 Knoblet Ltd. Cut in Leeds, posted everywhere.Every piece accounted for

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