chess.com daily puzzle 20211203 Abu Na'am's Mansuba, black to move - Step 4

 

chess.com daily puzzle 20211203 Abu Na'am's Mansuba, black to move - Step 4

Exact same puzzle in Step 4. Sacrifice, sacrifice!

Difficulty level: Step 4

Key concepts: blocking, luring (eliminating defense)

My analysis: https://youtu.be/gsyJxZt4rEk