"Pick a stack of cards at random, and flip the entire stack over. Now, a card appears in front of you, remember it, but don't tell me," Sawada Kazu continued.
Sawada Ki nodded, "Okay, what do you want me to do next?"
"Take this stack with the faces up and place it on top of any other stack. You don't need to flip it, just lay it down," Sawada Kazu read the card given to him by Jiang Shu.
He paused for a moment, then continued, "Now, put the last stack of cards on top of the two stacks you just made. You now have a three-tiered deck of cards. The first tier has the backs up, the second tier has the faces up, and the third tier has the backs up, is that correct?"
"Right," Sawada Ki glanced at it and nodded.
"Do you know how to do a riffle shuffle?" Sawada Kazu asked, "Divide this deck in half, and then give it one riffle shuffle."
"Okay." The sound of shuffling cards echoed from the phone.
