DAILY CHESS IMPROVEMENT: MATING CHESS TACTIC!

This was an actual game between GM Popov v GM Gunina

This is an actual position between GM Delchev and Tsolakidou

This is an actual game between Caruana and Nakamura at London Chess Classic!

This is based on an actual game

This is from an actual game between Fine and Beckhardt, New York, 1933

Please fill out the full answer

Please post full and complete solution

This was an actual game at the Asian Championship - White to move! How should white proceed?

This was one of the puzzles from North American Girls Puzzle Solving Championship