3 guards, 2 doors… Solution to the riddle!

3 guards, 2 doors… Solution to the riddle!

Our participation at Spark Summit 2017 in San Francisco was once again a great experience. Not only because of the quality of the speakers, but the special atmosphere built up by Spark lovers. To enliven the breaks between sessions talks, we brought a riddle, inviting all attendees to solve it.

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