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The challenge for Sunday, September 13, 2026

The four questions from that day on GutGuesser. The answers aren't here: you find them by playing.

1.How many times the Earth's is the pressure at the surface of Venus?

Space · Source: NASA, ficha planetaria de Venus

2.How far can an owl turn its head?

Animals · Source: Anatomía cervical de estrigiformes

3.How many hours is a vanilla flower open?

Food · Source: Botánica de Vanilla planifolia

4.How long ago was the wheel invented?

History · Source: Arqueología, rueda de Bronocice y Mesopotamia