If so, you would feel at home with these 12 people, who jumped at the chance to share their favorite stumper on Reddit – and now we all know 12 more great riddles, too. Answer: The man is a widower whose wife died on a holiday in the past. The man and his wife made it onto a lifeboat with a few other survivors and washed up on a deserted island. One can cross in 1 minute, one can cross in 2 minutes, one can cross in 5 minutes, and one can cross in 10 minutes. The 1 min and 2 min go together (2 min), the 1 min comes back (1 min) and sends the 5 min and 10 min together (10 min), the 2 min comes back with the light (2 min) and brings the 1 min with him (2 min).