Tishu challenged the actor to a game of chess and only after he beat him hands down, did he let him sign the dotted lines.
A source says, `For the sequel of Saheb, Biwi aur Gangster, everyone thought that since Irrfan is Tishu's good friend, getting in would be a cakewalk for Irrfan. But the director came up with this unique test.`
Irrfan finally beat Tishu in the game and came on board for the film.
The source adds, `It was only later Tigmanshu explained to Irrfan that since his character plays mind games in the film, he wanted to see him in action in real-life too.`
