MatPlus.Net

 Website founded by
Milan Velimirović
in 2006

1:01 UTC
 
  Forum*
 
 
 
 

Username:

Password:

Remember me

 
Forgot your
password?
Click here!
SIGN IN
to create your account if you don't already have one.
CHESS
SOLVING

Tournaments
Rating lists
1-Oct-2019

B P C F





 
 
MatPlus.Net Forum Liga Problemista 2009 Theme for the 2nd round 2009
 
You can only view this page!
(1) Posted by Administrator [Sunday, Mar 15, 2009 17:38]

Theme for the 2nd round 2009


Theme: Orthodox helpmates in 3 moves (h#3) with active sacriface of the white piece and one or more tempo move(s) in the solution. Tempo can be either black, or white, or black & white.

Active sacrifice means that the white piece moves and arrives to the square where it will be captured.

Set play, tries, multiple solutions and twins are allowed. Additional fairy condition and/or pieces are forbidden.

Examples:
Frans Hansson
Fairy Chess Review 1953
(= 3+5 )
 

h#3

1.Rb4 Sc4+ 2.Qxc4 Ke5 3.Kc5 Sd7#

Michel Caillaud
(dedicated to A. Karpati)
com. StrateGeams 1999
(= 10+7 )
 


h#3 (211111)

1.Rh1 Re1 2.Rxh3 Bxh3 3.dxe1=B Bf1#
1.Re1 Rc1 2.Rxe4 fxe4 3.dxc1=R Be2#

Zdravko Maslar
2.hm. Die Schwalbe 1981
(= 6+9 )
 

h#3

1.Sf3 Rh1 2.Qxh1+ Kxg3 3.Qa1 d4#

Borislav Mikota
Problem 1959
(= 7+12 )
 

h#3*

*1... Kd3 2.f2+ Be3 3.Kf3 Bxb7#
1.f2 Bf8 2.Kf3 Kd3 3.Qxf8 Bxb7#
 

Judge: Borislav Gađanski (Serbia)

Closing date: July 1st, 2009

Send problems to:
Milan Velimirović, Milentija Popovića 35/6, 11070 Novi Beograd, Serbia

or by e-mail to: mivel@sezampro.com (with subject LP 2/2009)

or online: fill the input form Originals..LP 2009-2 on this site – ensure that correct section (LP2009, Round 2) is selected!

Announcements in PDF format:
English language: http://www.milanvel.net/pub/LP2009_2_theme.pdf
Српски језик: http://www.milanvel.net/pub/LP2009_2_tema.pdf
 
(Read Only)pid=3225
(2) Posted by Juraj Lörinc [Thursday, Apr 16, 2009 16:12]

In my view a tempo move is wrongly noted in the Mikota problem. While 1...Bf8 undoubtedly is an active sacrifice, it is not a tempo move as it opens line for the 3rd black move. 3.Qxf8, therefore it has positive motif and cannot be considered a tempo move. On the other hand, once the position after the 2nd white move is attained, 3.Qxf8 is a pure tempo move.

One could argue that with other available move for White (e.g. with +wpf5 White could play 1...f5 and Black later 3.Qa5 or 3.f1R/S), White needn't leave c5 with bishop, but this just shows negative motivation of 1...Bf8 (opening of a5-d5 and unguard of f2), forcing the unique tempo move in the 3rd black move.
 
 
(Read Only)pid=3552
(3) Posted by Administrator [Friday, Apr 17, 2009 00:29]

 QUOTE 
Juraj Lörinc: In my view a tempo move is wrongly noted in the Mikota problem...

The confusion is caused by my (=MV) error: the real tempo is 3.Qf8 (the announcement has been corrected and this move is now underlined). In the article which will be printed in the next MPR Borislav Gadjanski classified this problem in section "White sacrifice and black tempo move".

Regarding 1...Bf8, this move is taken by white in lack of a tempo, so it's at least an intended tempo, but with a side effect. Juraj is right, this is not not a real tempo, but nevertheless this is undoubtedely the most important and beautiful move in the whole conception. I removed the underline below Bf8, but could not resist to 'underdot' it :)
 
 
(Read Only)pid=3554

No more posts


MatPlus.Net Forum Liga Problemista 2009 Theme for the 2nd round 2009