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Problem 616: Srecko Radovic - Helpmate
srecko.radovic(21.10.2015) Helpmate moremover with a great sacrificial key by Srecko Radovic.
 
 
 
 
 
 
 
 
 
616
 
         1…Rb7!! 2.Rxb7 a6 3.Kc7 axb7 4.Kd8 b8Q#
         1…a6? 2.Rb7 axb7 3.Kxc7 3…?? 4.Kd8…
         1…R~? 2.Rb7 a6 3.Kc7??
 
The sacrifice of the wR for loosing a tempo move in a helpmate moremover miniature. (Author)
 

Comments  

 
+11 #1 Miodrag Mladenovic 2015-10-21 05:10
Real masterpiece.
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+1 #2 Seetharaman Kalyan 2015-10-21 07:47
Quoting Miodrag Mladenovic:
Real masterpiece.

With just one 'not so long' solution I was wondering if it has not been done before :-)
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+1 #3 Bienabe 2015-10-22 10:04
Nice !
Curiously, adding a black Pawn b5 makes it a 2 solutions :

1…Rxa7 2.Qd5 Ke8 3.Kc6 Kd8 4.d6 Rc7#
1…Rb7 2.Rxb7 a6 3.Kc7 axb7 4.Kd8 b8=Q#
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+5 #4 Srecko Radovic 2015-10-22 10:33
Yes, but I think that it would be more as a cook line, than like the second solution.Quoting Bienabe:
Nice !
Curiously, adding a black Pawn b5 makes it a 2 solutions :

1…Rxa7 2.Qd5 Ke8 3.Kc6 Kd8 4.d6 Rc7#
1…Rb7 2.Rxb7 a6 3.Kc7 axb7 4.Kd8 b8=Q#
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+1 #5 Miodrag Mladenovic 2015-10-22 17:58
Also, it's possible to have a twin position:
b) bPd7=>b5 with solution:
1...a6 2.Rb7 a7 3.Qe5 a8Q 4.Ra7 Qc6#
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+2 #6 Viktoras Paliulionis 2015-10-23 10:29
Nice tempo move with sacrifice of the wR.
It's pity that order of the moves in the set-play is not unique. You can see several interesting helpmates threemovers with "tempo sacrifices" in the award of the thematic tourney Liga problemista 2009: www.selivanov.ru/.../MP35.pdf
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+1 #7 Diyan Kostadinov 2015-10-24 15:26
Hi Srecko (and other composers), if you want your comments to be published immediately please register an account from Sign-in form on the right side of the website.
It is very easy and quick - just fill your name, email, nickname and password. After the approvement of the accaont you will be able to publish you comments without delay when you are sign-in with it.
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+4 #8 Miodrag Mladenovic 2015-10-24 15:42
@#8 Srecko, you are right. Do not change anything in your original position.
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+1 #9 Seetharaman Kalyan 2015-10-24 18:14
Quoting Miodrag Mladenovic:
Also, it's possible to have a twin position:
b) bPd7=>b5 with solution:
1...a6 2.Rb7 a7 3.Qe5 a8Q 4.Ra7 Qc6#

Interesting that it adds an extra white promotion... but no sacrifice !
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+2 #10 Kenan Velikhanov 2015-10-24 20:47
It is not necessary to add options are not enriched the author's idea.
There is not nothing similar find- I think so.
Game avtroskom decision is very beautiful!
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+2 #11 Kenan Velikhanov 2015-10-24 20:53
It is not necessary to add options are not enriched the author's idea.
There is not nothing similar find- I think so.
Game autor decision is very beautiful!
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+4 #12 Viktoras paliulionis 2015-10-26 15:59
It is likely that this idea was previously realized with wS and wB only. Compare to:




See also:

pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1080710%27%20OR%20PROBID=%27P1093147%27%20OR%20PROBID=%27P1093146%27
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+1 #13 Seetharaman Kalyan 2015-10-26 17:02
Thanks Viktoras for your research and nice examples. The idea seems to be even better when shown in longer helpmates! Zlatko's h#4.5 is especially beautiful with the nice try 1...Kh7?
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0 #14 Aleksey Oganesjan 2015-10-26 18:49
Yes, thanks to Viktoras for these examples!
In addition I can propose my recent miniature with the idea (with wB):

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+4 #15 Viktoras paliulionis 2015-10-26 20:02
Nice first move, Aleksey! But the idea is some different. 1... Bh8 is not a tempo move, it has a different motivation.
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+2 #16 Nikola Predrag 2015-10-27 00:11
There are various possibilities with weaker white pieces:
White: Sd8,Ke6,Pb5; Black: Kc5; h#4
or
W: Bf8,Pe4,Kh1; B: Pf7,Qg7,Kc6,Be5; h#4.5

wR is much more challenging, I wonder whether 2 different tempo sacrifices of the same wR have been realized in 2 phases.
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+1 #17 Dmitri Turevski 2015-10-27 05:49
Viktoras, tempo-sacrifice of the wR was shown before:
www.yacpdb.org/#305437

Also bishop tempo-sacrifices were shown much earlier than 20xx by F. Abdurahmanovic:
www.yacpdb.org/#337159
And the earliest realization dates back to 1960:
www.yacpdb.org/#395560
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+1 #18 Seetharaman Kalyan 2015-10-27 06:41
Quoting Nikola Predrag:
wR is much more challenging, I wonder whether 2 different tempo sacrifices of the same wR have been realized in 2 phases.

Now.. that is an interesting thought, since there have been many realisations of a single tempo move shown by our helpful commentators.
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+1 #19 Massimo La Rosa 2015-10-30 18:22
In this problem Black has an idea.

He wants to reach d8 so to be mated by a5P which queens at b8.

White has to move his Rook so to let the black King reach d8 via c7.

The only move is the nice sac at b7.

In this problem we do not have a loss of tempo as the Author says.

We have a Rook sacrifice.

The 1st try doesn’t work for lack of moves, but this is a different theme from tempo move.

This problem was created with one solution only. Adding a new solution brings to nothing better.
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+2 #20 Seetharaman Kalyan 2015-10-30 18:59
Quoting Massimo La Rosa:
He wants to reach d8 so to be mated by a5P which queens at b8.

White has to move his Rook so to let the black King reach d8 via c7.

Thanks for the interesting comment. Actually the white rook need not move as the Black king's route to d8 through c7 is already there in the diagram. The try 1...a6 shows that the white's inability to make a harmless move is the trouble. I think the author means "White rook sacrifice because of lack of tempo move".
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