The Janowski Variation, 3.Nc3 Bf5, was first introduced by Dawid Janowski in the 1920s. The idea behind it is that 3...Bf5 prevents White from immediately grabbing space with 4.e4. The variation did not gain much popularity until the 1980s. Several top-level players have employed the line multiple times, including Mikhail Tal, Bent Larsen, Florin Gheorghiu, and Kamran Shirazi.
