Bulgarian Successes
- FIDE Album 2010-2012 - a successful participation of the bulgarian composers! The upcoming album is for 2013-2015
- Olympic Gold medal for IM Diyan Kostadinov!
- Bulgarian successes (Part 3)
- Great success for Bulgaria at the World Championship!
- Bulgarian successes (Part 2)
- Bulgarian successes (Part 1)
- Petko Petkov - world champion again!
Bulgarian Composers
Theme on focus (6)
Visitors
| Problem 835: Fadil Abdurahmanovic, Ioannis Kalkavouras - Helpmate |
  (22.05.2017) An excellent helpmate from Fadil Abdurahmanovic and Kalkavouras! Should be delight to solve. 835. Fadil Abdurahmanovic (Bosnia and Herzegovina) &
Ioannis Kalkavouras (Greece)
 H#2 2 sol. (6+10)
1.Sa8! Rc3+ 2.Kd4 Rd7# |
KOBULCHESS.COM
site for chess composition
General editor:
Diyan Kostadinov
Co-editor:
Seetharaman Kalyan
Sign-in
Recent comments
- Problem 436: Alexey Oganesyan - Selfmate (6 comments) More economic version saving a one White Pawn: Re5->e6, Pg6->h5, Pg7->...
- New on KoBulChess (2 comments) If you want to hookup with a girl on the internet, you'll find that th...
- Women chess composers (Updated) (18 comments) Азарт - приятная эмоция, делающая жизнС...
- Sad news: IM Krassimir Gandev passed away today (2 comments) Sad news. I always remember his miniature h#s with neutral Ps and Circ...
- Problems 978-980: Petko Petkov - Fairy (Anda, Anda Inverse) (2 comments) I really like the specific fairy effects which are possible. 978 and 9...
- Problem 976: Vladimir Pankov - Helpmate (4 comments) [quote name="Kostas Prentos"]This is practically a series-h# idea (wit...
- Zoran Gavrilovski 50 JT - Award (1 comments) I've great admiration for the composer Z. Gavrilovski. He composes and...
- Seetharaman - 64, Superguards Tourney 2013 Award (3 comments) Last year I sent book prizes to all the prize winners. Excuse the dela...
Comments
3b1K2/Q1R5/1nn2N2/p1P1p3/p7/1p1k4/1B6/2R5
Compare to: pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P0536662%27 with dynamic pins
By the way, BB could be eliminated, too - 5K2/Q1R1p3/1nn2N2/p1P1p3/p7/1p1k4/1B6/2R5
In this version, both BSs play at the edge of chessboard.
"Vitaly's version is unacceptable. It strips off the problem,from all its thematic content, as bS hideaways and pin-mates after anticipatory opening of two masked lines.
Vitaly's version was exactly
what, Fadil and I were trying to avoid from the very beginning.
It looks more like a caricature of our idea, than an economic rendering
of it. I am sure he can even find a miniature setting, lifeless though and irrelevant to this problem."
I respect that but I don't share this approach.
In my view, using of pins is irrelevant to this problem.
Let me explane my viewpoint. In most cases, static unit hardly can be considered as essential part of thematic content because thematic content is created by moving pieces primarily. Therefore, a composer should avoid to use artificial (unnesessary) features such as static pins.
However, different approaches can be used in composing...
With reference to Vitaly's comments in #5 Ioannis sends the following remarks:
'Dear Vitaly, I really appreciate your jeal, but I don't understand why the unmasking of two prospective masked lines (c4-c7 and d4-a7), by use of hiding moves by bSs, doesn't mean anything to you.
I suppose if both knights were static and bR did the whole pinning job, then you would be satisfied.
I'm really astonished y your argumentation, though hopefully we can agree on one thing: different approaches or misinterpretations can be used in chess composing "
True. I'v missed that.
This defect could be cured by adding WPc4 but I think it would be worse than static pin.
So, I apologys. And I agree that my version is rather caricature. I bag the author's pardon.
No. I would be satisfied if there would be some function permutation between black knights - then the whole mechanism would be unified.
Pins are irrelevant to this mechanism, on my opinion.
1.Rac5 Bc3 2.Kxc4 Qa6#
1.Rfc5 Rc3+ 2.Kxd4 Rd8#
Though,something similar has been shown before -
pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P0547847%27
Pin which requires two black moves can't be called "static". But that's just inadeqate wording, the question is indeed "what motivates the play?".
Is bRc5 just a "static cookstopper" or its presence thematically motivates the play?
h#1.5, with bPc5 (instead of bR) has only one solution,
1...Bc3 2.Kc4 Qa6# and the "try",
1...Rc3+? 2.Kd4 Rd7+ 3.Sxd7!
Mating by 2.Rd7 requires extension to h#2 and the unguard by 1.Sa8!
It's clear that wQa7 is idle in this case, so to "hide" such a terrible defect in the economy, another (lesser) defect is added, bRc5 instead of bP.
So here, Vitaly is wright, the pin wQ-bR is NOT what relevantly motivates the play.
wQ and bR artificially "justify" each other's presence without a thematic reason.
However, the solution of this h#1.5, with bPc5, shows that bRc5 would require the extension to h#2 for a pure reason, so in No.835, 1.Se7! is motivated exclusively as an 'anticipatory selfpin'.
Therefore, the static cookstopper becomes a thematic piece which requires the "selfpinnig play", but only in one phase.
Just a rough example of purely motivated anticipatory selfpin in B1:
h#2, W: Qc7,Re7,Kg6,Bd2,Re1
B: Pg7,Bd6,Se6,Re5,Pg5,Rb4,P g4,Pd3,Kf3,Sc2,Qa1
1.Bc5 Re3+ 2.Kf4 Rf7#
1.Sc5 Be3 2.Ke4 Qc6#
Quote:
8/2Q1R3/3bn1K1/4r3/1pr3p1/3p1k2/2nB4/q3R3
H#2 2.1... 5+10
1.Bc5 Re3+ 2.Kf4 Rf7#
1.Sc5 Be3 2.Ke4 Qc6#
8/Q1R5/1bn1K3/2r5/4p3/qp1k4/nB6/2R5
H#2 2.1... 5+8
1.Ba5 Rc3+ 2.Kd4 Rd7#
1.Sa5 Bc3 2.Kc4 Qa6#
White Qd8 Kf8 Sg6 Bb1 Rd1
Black Bb8 Rc8 Bc6 Sd6 Pd5 Pf5 Pc3 Ke3
The effect of pin is redundant in No.835 1.Sa8(unguard).
In Yuri's 2nd example, 1.Sa5 is anti-dual choice as line interference + pin, since the interference 1.Ba5 (without pin) is not enough for 2...Qa6#?.
So, the pin is thematic, but its importance is half-reduced in one phase.
The half-motivating pin requires 2 white pieces. From the aspect of economy, it looks better to have only one, the mating piece, and to enrich the Grimshaw with reciprocal dual-avoidance 1.Be8 Bd3?, 1.Se8 Rd3+?
RSS feed for comments to this post