In episode 75 of 'Kaun Banega Crorepati' season 15, host Amitabh Bachchan welcomed Rupak Kumar from Begusarai, Bihar. Rupak, a chess enthusiast, shared his love for the game and how he plays online for long hours. Amitabh Bachchan discussed his own social media presence and interaction with fans. Rupak expressed his surprise at his daughter's interest in chess. Amitabh Bachchan encouraged Rupak to nurture his daughter's interest and mentioned the current young Grandmaster in chess.
