Describe how Oskar's search for the key is similar the game her would play with his father

Oskar determined that 472 people with the last name Black live in New York City. Though he determined it would take three years to interview them all, he concocted a plan to do so, first forging a letter to his French teacher to get him out of weekend classes without his mother's knowledge. With that time, he planned to find and interview all those families about his father's key. He considered it a sort of Reconnaissance Expedition, something he shared with his dad alone.