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| Problem 601: Aydan Huseynzade - Helpmate |
 (01.07.2015) Another nice helpmate from the Azerbaijan lady with intricate line-play! 601. Aydan Huseynzade (Azerbaijan)
01.07.2015
 H#2 2 sol. (7+14)
1.Kd3 Bg5 2.Rd4 Sg2# 1.Kc5 Rf6 2.Sd4 Sf7#
Good constructional skill in handling two white batteries! (Seetharaman) |
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Comments
So Huseynzade is correct?
Yes. That is the surname she has given.
Compare to:
The expert has added pinmates with dual avoidance to the indirect/direct battery scheme!
Please publish a new version.
882k1N3pN63q45p1B1R64K
1. Qa7 Bf1
2. Kb6 Sbd4#
1. Qd8 Re2
2. Kd7 Sed4#
I hope there will be no forerunners
I spoke to Aidan, she does not mind to publish this more cost-effective position. Exact same idea, the transformation of half-battery for direct battery .With the advent of two horses on one and the same field.
The mating moves Se3-g2/Sd6-f7 close the black lines but the wS which has moved has no guarding function in that mate.
The new version is a simplified C.Johnson's scheme, with selfblocks instead of lineclosing anticipatory selfpin.
Aydan's idea, combined with the flightguard strategically richer, but a convincing mechanism should be created.
In the following example, bQ is a good part of the mechanism but bR&bB have artificial functions:
W: Sf6,Sc5,Pa4,Bh4,Pd2,Rc1,Kh1;
B: Bh7,Kd6,Qb4,Re2; h#2
1.Re8 Rf1 2.Ke7 Sfe4#
1.Kc6 Bf2 2.Qb7 Sce4#
Could that be improved?
That is why I like 5+4 version more.
Could the version, suggested by Nikola, be improved? Well, we'll see
Here we have W-B line-closing effect on mating move, but 1.Rxb2 is an obvious defect since this move has double motivation, while the goal of its thematic reflection - 2.Qe1 - is pure...
But "my" idea is not good because the lineclosing is completely accidental, just as it was shown in post No.6.
To make it convincing, the precise arrival of wS should be determined purely by the lineclosing.
A rough example:
W: Pf6,Pa5,Sf5,Sc4,Bh3,Kh2,Rc1; B:
Ba8,Bg7,Rh7,Kd5,Pb4,Sh1; h#2
1.Ke6 Rf1 2.Bd5 Sh6(Sfd6?)#
1.Bh6 Bf1 2.Kc5 Sce3(Sb6?)#
The next step is to combine a pure dual-avoidance motivated by the need of line-closing, given in your rough example, with tactical homogenity of the play that was shown in the version of comment#6
Could someone do it?
W: Pd6,Pa5,Sf5 Sc4,Bh3,Rc1,Kh1; B:
Ba8,Ba7,Kd5,Pb4,Sh4,Pa3,Rb3; h#2
1.Rf3 Bf1 2.Kc5 Sce3#(Sb6?)
1.Sg2 Rf1 2.Ke6 Sfe3#(Se7?)
Actually, I'm not sure that it is an improvement:
1) there is no function permutation between bRb3/bSh4
2) there is an interesting false maneuver 1.Sf3? but it presents only in one solution.
Finally, we must explain (to less experience composers) what is "an artificial effect" and what is not.
See, what I mean:
author gives a stipulated position and the author's solution (possibly including an explanation of the thematic content).
Every position is artificially constructed to present some idea.
And it is relevant what is the truth in the given position.
If the truth doesn't support the author's claim, the appearance of thematic content is artificial.
Of course, a changed position may show some other "truth" but 'why would that be relevant?', that's the question.
When compared to your example (post No.16), my example (post No.15) presents the additional line-closing strategy.
And that's a new dimension, which requires such properties of the given position.
Why should that dimension be lost by changing the position?
Of course, to ask such a question, one should be aware of that dimension.
our points of view on this subject are very near.
Yes, chess composition is an artificial phenomenon and composing is an artificial activity. I named "artificial" such effects that are not essential (non-necessary) for an appropriate author's idea.
In your example (comment#15, first diagram in comment#16) line-closing effect on mating move is a part of author's idea, so it is not artificial while the same effect in the version, given in comment#12, is artificial (accidental) since the basic motivation of arrival on key square is guarding flight.
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