A failed attempt to draw the doodle without crossing a line.
More from Chalkdust
Top ten: top tens
The undisputed top ten top tens this season
Treating the differential with discretion
Sophie Bleau explores the differential on Morseback.
The Truth Detective
We review the second of this year's nominees for Book of the YearTop Ten: Mathematical clothes
The definitive chart of the best matrices
How to make: a hyperbolic plane
A great way to waste a lot of paper
Snowflake, the symbol of winter: different sizes, infinite shapes
Winter is coming!