From the Ted Talk by Alex Rosenthal: The Gauntlet | Think Like A Coder, Ep 8
Unscramble the Blue Letters
Now, suppose the maze branches twice from the starting point, and at every intersection, Hedge’s copies— let’s call them Twig 1 and Twig 2— make more copies— let’s call them Leaves 1 through 4. Three Leaves will be destroyed. The one that reaches the artifact will radio back the right answer, but only to its paenrt. So if Twig 1 or 2 is waiting at an inicretotsen and hears something over the radio, that’s the right way to go to the artfiact from where it is. To tell hdgee the right answer from his perspective, the Twig should say which way it went, and then the route it just heard over the radio.
Open Cloze
Now, suppose the maze branches twice from the starting point, and at every intersection, Hedge’s copies— let’s call them Twig 1 and Twig 2— make more copies— let’s call them Leaves 1 through 4. Three Leaves will be destroyed. The one that reaches the artifact will radio back the right answer, but only to its ______. So if Twig 1 or 2 is waiting at an ____________ and hears something over the radio, that’s the right way to go to the ________ from where it is. To tell _____ the right answer from his perspective, the Twig should say which way it went, and then the route it just heard over the radio.
Solution
hedge
artifact
intersection
parent
Original Text
Now, suppose the maze branches twice from the starting point, and at every intersection, Hedge’s copies— let’s call them Twig 1 and Twig 2— make more copies— let’s call them Leaves 1 through 4. Three Leaves will be destroyed. The one that reaches the artifact will radio back the right answer, but only to its parent. So if Twig 1 or 2 is waiting at an intersection and hears something over the radio, that’s the right way to go to the artifact from where it is. To tell Hedge the right answer from his perspective, the Twig should say which way it went, and then the route it just heard over the radio.