Preheat oven to 325°F temperature.
Mix cracker crumbs, butter, and sugar together.
Press mixture into springform pan bottom firmly.
Beat cream cheese until completely smooth and fluffy.
Add sugar gradually while mixing continuously.
Beat in eggs one at a time.
Mix in vanilla extract and sour cream.
Pour half the batter over crust.
Drizzle melted chocolate in small circles.
Add remaining batter on top carefully.
Drop strawberry puree in small dollops.
Swirl with knife to create patterns.
Bake for 55-60 minutes until center sets.
Cool completely before removing from pan.