Penny calls Leonard , who is partying on his boat and not available to talk .
Later , while Penny is missing Leonard , she is not interested in the 3 - D chess game that Sheldon has set up in his apartment .
Penny calls Leonard , who is partying on Leonard 's boat and not available to talk .
Later , while Penny is missing Leonard , she is not interested in the 3 - D chess game that Sheldon has set up in his apartment .