Interference - Chess Tactic

Burn produced the staggering 33...Qg4!!, leaving his queen en prise to three different White pieces. However, if 34.Bxg4 or hxg4, Black wins with 34...Bxd2. If 34.Qxg5+, Qxg5 35.Rxg5+ Kh6, Black wins a piece and the game. MacDonald instead tried 34.Rxg4 Nf3+ 35.Kg2 Nxd2 36.Rxg5+ Kh6 37.h4 Nxb3 38.Rf5 Nxa5 and Burn won in 11 more moves.

Interference Chess Tactic Resources

Wikipedia Interference Page
General Info on this tactic with examples.

Interference Chess Articles

Practice Puzzles Interference - Very Nice Site with 30 Interactive Puzzles
Grimshaw - A type of interference where two black pieces arriving on a particular square mutually interfere with each other. Wikipedia page with description and examples.
Novotny(Nowotny) - A Grimshaw brought about by a sacrifice on a particular square where it could be captured by 2 opposing pieces. Wikipedia page with description and examples.

Interference LiChess Studies

Interference Study - 7 interactive Problems
Interference: Two ways to Interfere - 6 Chapter Educational Study
Interference Lessons  - 17 Chapter Study

Games Databases

 Chessgames.com

6 OTB Games with interference Tactic 
Anthoney Miles vs Craig William Pritchett 1982 - Another OTB game with a nice Novotny as the last move.
Novotny, Plachutta and other interferences - 11 OTB Games 
Interference or Obstruction - 54 OTB Games 

Interference Chess Video Lessons

Secrets of Chess Tactics | Interference Tactic Stunningly beautiful secrets - 27 Min
AMAZING INTERFERENCE TACTICS! - 10 Min
Obstruction or Interference: the most elegant Chess tactic you will learn - 15 Min
Closing out those lines to your advantage | Interference | Chess Tactics 101 - 13 Min
Most SPECTACULAR Interference Ever ⚠️ SERIOUSLY | Chess Puzzles -7 Min
2 MOST Important Chess Tactics You Should Know | Tactics Training - 15 Min GM Smirnov