Saturday, January 31, 2009

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.

Wikipedia Interference Page - General Info on this tactic with examples.
Interference Lesson - Pretty thorough 8 page lesson at Predator at the Chess Board
Interference Problems

Predator at the Chessboard Lessons
Interference to Loosen a Piece - 8 page lesson
Interference to Loosen a Mating Square - 9 page Lesson
Interference on a Penultimate Rank - 4 page Lesson
Interference as Part of a Double Threat - 3 page Lesson
(24 Examples in above lessons)

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.

Anthoney Miles vs Craig William Pritchett 1982 - Another OTB game with a nice Novotny as the last move.

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