Sources and checks

Every question is researched from two independent sources, such as official bodies, museums, encyclopaedias and reference works. Before an edition is published, a server fetches each source page again and checks that the quoted fact is really there. A question ships only when at least one source is confirmed this way, and only confirmed sources are credited; some sites block automatic checks, so a few questions show one source although they were researched from two.

Questions and explanations are our own wording. The pictures are drawn by us from open data: flags from the flag set Atlas Play uses (flag-icons, MIT licence), country outlines from Natural Earth (public domain), silhouettes drawn in code for Size Duel. Corrections are welcome at support@twindle.nl.

The first edition’s sources appear here when it opens.

Font and artwork

Bricolage Grotesque, © The Bricolage Grotesque Project Authors, under the SIL Open Font License 1.1, served from this site. The mark, the answer sheet, the pencil, the buzzer, the scoreboard and every other drawing are original, drawn in code for Pub Quiz. The QR code on the host screen is drawn in your browser with qrcode-generator (MIT).