TED-Ed
TED-Ed: The hidden treasures of Timbuktu | Elizabeth Cox
On the edge of the vast Sahara desert, citizens snuck out of the city of Timbuktu and took to the wilderness. They buried chests in the desert sand, hid them in caves, and sealed them in secret rooms. Inside these chests was a treasure...
Packt
Compare the breadth-first and depth-first search algorithms : BFS and DFS Intro
From the section: BFS and DFS Grid World. This section will cover BFS and DFS Grid concept. BFS and DFS Grid World: BFS and DFS Intro