Stop Interfering!!

[garykevinware]

This week, we conclude our look, for now, of record interference problems, with the three problems that I promised last week.
"The discovery of Burgess' problem led to a flurry of intensive effort which produced the next three problems, all with the full complement of six WK mates. The first problem is a beautiful version of Burgess' problem."



H.J. Burgess Braille Chess Magazine 1946 (Version by H.W. Grant and N.G.G. van Dijk) #2

"The following problem gives the matrix a quarter-turn."



H.W. Grant British Chess Federation Tourney 1967 #2

"Finally, the composers of the following problem, managed to combine the different elements so as to attain, at the cost of a bad key, the unique new record of 10 interferences."



V. Bartolovic and N. Petrovic British Chess Federation Tourney 1967 #2

6 points for sending me a complete variation to each problem, at garykevinware@yahoo.com , by next Wednesday.

[garykevinware]

Here are the answers to last week's problems:
"This is a beautiful version of Burgess' problem, which replaces its poor key by a magnificent withdrawal move exposing the WK to four checks."
Burgess (Version by Grant and van Dijk) #2-
1 Kb5 Bb7 2 Qc5#
1...Rb7 2 Ka6#
1...Rb2 2 Bxd4#
1...Rb3 2 Ka4#
1...Bb2 2 Kxb4#
1...Bc3 2 Kxc4#
1...d3 2 Re4#
1...f5 2 Ng6#
1...g2 2 Bh2#
1...Rxb6+ 2 Kxb6#
1...dxc6+ 2 Kxc6#
Grant #2-
"This problem gives the matrix a quarter-turn, substituting a second interference unpin for one of the interferences with the BQ, and adding byplay."
1 Bd4 Rb6 2 Kd8#
1...Rc6 2 Kxd7#
1...Bb5 2 Bxd5#
1...Bc6 2 Kxd6#
1...Nc3 2 Nd2#
1...Nd2 2 exf4#
1...Rg7 2 Kf8#
1...Bg7 2 Qxg6#
1...Ng7 2 Qxf4#
1...fxe3 2 Rxe3#
1...Rxf7+ 2 Kxf7#
1...Bxg5+ 2 Nxg5#
Bartolovic and Petrovic #2-
1 dxc8=N b2 2 Ba2#
1...c5 2 Nb6#
1...Ng7 2 Qxd6#
1...Bg7 2 Qe6#
1...Rg7 2 Kh6#
1...e3 2 Rd4#
1...Rg2 2 Bxe4#
1...Rg3 2 Kh4#
1...Bg2 2 Kxg4#
1...Bf3 2 Kxf4#
1...Bxe7+ 2 Nxe7#
1...Rxg6+ 2 Kxg6#