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Problem 532: Kalyan Seetharaman - Helpmate
seetharaman.kalyan(15.02.2015) My new helpmate showing Bristols and pinmates is inspired by 521 and is an attempt to use the vanishing white pieces also!
532. Seetharaman Kalyan (India)
 H#2           2 sol.         (4+6) 
1.Rb3 Rg4+ 2.R8b4 Be8#
 1.Rb2 Bd1+ 2.R8b3 Rg4# 


+2 #1 Rodolfo Riva 2015-02-16 01:39
Most economical version of the so-called Guidelli (or Leibovici) interferences.
B1 show unmatched effects.
0 #2 Seetharaman Kalyan 2015-02-16 05:26
Thanks Rodolfo Riva. Yes it indeed shows Leibovici interference also! I failed to notice it, looking at the doubled bristol effect! B1 moves are of course not matching ... I see no other way of forcing the black rook to 'b2'!
+1 #3 Vitaly Medintsev 2015-02-16 08:23
Technical PW coud be eliminated:
4B3/5R2/4p3/5p2/8/8/6rq/b1rk1K2 but it is not easy to eliminate repeated move by WR :-)
0 #4 Seetharaman Kalyan 2015-02-16 09:32
Thanks Vitaly! I should have thought of this possibility :-* I gladly accept your suggested version.
0 #5 Seetharaman Kalyan 2015-02-18 17:58
While searching for problems showing black bristol in H#2 I noticed that there were very few using the same pair of black pieces. The following is a beautiful problem showing matching bristols by white also! -- but needed twinning!

Of course no pinmates :-)
+1 #6 Nikolaj Zujev 2015-02-20 13:42
Nikolaj Zujev
"Chess Leopolis" Nr 20 2007
Popeye Windows-32Bit v4.63 (512 MB)

1.Ka5-a6 Bh8-d4 2.Ka6-a7 Rc4*a4 #
1.Rb6-b4 Bh8-c3 2.Rh6-a6 Rc4-c5 #
1.Rb6-b5 Rc4-c5 2.Rh6-a6 Bh8-c3 #

solution finished. Time = 1.360 s
0 #7 Seetharaman Kalyan 2015-02-21 05:19
Thanks Nikolaj for the interesting miniature for comparision. Here is the diagram.

I think it is a different scheme though it has the pinmates!
0 #8 Seetharaman Kalyan 2015-03-06 18:42
While on the subject of bristols, here is another brilliant reciprocal bristol, shown for the first time I think for both and white. The twinning is of course thematic!


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