chess.com daily puzzle 20220331, Koneru's Surprise Birthday Gift, black to move, Step 2

chess.com daily puzzle 20220331, Koneru's Surprise Birthday Gift, black to move, Step 2
#dailypuzzle #chesstactics #chesssteps
Difficulty level: Step 2
Key concepts: trapping
My analysis: https://youtu.be/TPwWYPB3gvE
Koneru Humpy (born 31 March 1987) is an Indian chess player best known for winning the FIDE Women's rapid chess championship in 2019.[1] In 2002, she became the youngest woman ever to achieve the title of Grandmaster (GM) at the age of 15 years, 1 month, 27 days, beating Judit Polgár's previous record by three months[2] (this record was subsequently broken by Hou Yifan in 2008). In October 2007, Koneru became the second female player, after Polgár, to exceed the 2600 Elo rating mark, being rated 2606.[