Six-year-old Holden Smith says he has “a trillion” Pokémon cards, but his favorite one is Koraidon — a fighting dragon. At his home near Dripping Springs, Texas, he shows off his stuffed animals, especially the ones his brother Everett, 7, won from claw machines.

He and his mother, Liz Smith, sit on the floor and play The Genius Square game — which is a lot like Tetris but in board game form. “On your marks, get set … Go!” Holden shouts. And then “I beat you!” he says when he solves the puzzle before his mother can.

This August, Holden will start kindergarten, just down the street from his subdivision. What he’s looking forward to: “To not be bullied,” Holden said.