Challenge: Nibi na Saala or simply Challenge is a 2009 Indian Bengali-language action film written and directed by Raj Chakraborty. Produced by Shrikant Mohta under the banner of Shree Venkatesh Films, the film stars Dev and Subhashree Ganguly in the lead roles, while Rajatava Dutta, Biswajit Chakraborty, Supriyo Dutta, Kharaj Mukherjee, Laboni Sarkar, Tulika Basu and Partha Sarathi Chakraborty play other pivotal roles. The soundtrack of the film was composed by Jeet Gannguli and cinematography was by Somak Mukherjee. The screenplay and dialogues were written by Raj Chakraborty and N. K. Salil. Being a remake of the Telugu film Dil (2003), it also had some plot elements and scenes from Bunny (2005).