Zabunov - 85MT 2013

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Zabunov - 85MT 2013

(20.05.2013) The website for chess composition KoBulChess.com organizing a memorial tourney on the occasion of the 85th anniversary of the famous Bulgarian chess composer of the recent past FM Vladimir Zabunov (1928-1997).

Theme: Help-selfmate in 2-4 moves (HS#2-4) with the Zabunov theme - the front piece from one battery makes an ambush move and becomes the rear piece of a newly created battery. Anti-batteries and other type specific fairy batteries can be used too.

Fairy pieces and conditions are allowed, but the problems must be computer checked by the solving program Popeye or WinChloe.

The judge of the tourney is GM Petko Petkov (Bulgaria).

Send problems to Diyan Kostadinov by email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Deadline: 15.11.2013

The award will be published in KoBulChess.com till to the end of 2013.

EXAMPLES

1. a) 1.Rc3+ Kc6 2.Se3+ Bc5# b) 1.Rg8+ Kd8 2.Sg6+ Bf8#

Zabunov theme with white pieces.

2. 1.Ga6+ Sb1 2.Kb3+ S5a3#

Zabunov theme with Grasshopper as a front battery thematic piece.

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3. a) 1…Qf7! 2.Lid8+ Bb7 3.hnGc8(nG)+ hnGe8(bG)#

[3…hnGa6(bG)?? selfcheck] [3…Bb8?? selfcheck]

[1…Qc5? 2.Lid8+ Bb7 3.hnGc8(nG)+ hnGc4(bG)!]

b) 1…Qf8! 2.Lid5+ Bb8 3.hnGc6(nG)+ hnGe4(bG)#

[3…hnGa4(bG)?? selfcheck] [3…Bb7?? selfcheck]

[1…Qf6? 2.Lid5+ Bb8 3.hnGc6(nG)+ hnGg6(bG)!]

Zabunov theme with initial Lion/KangarooLion battery and creation of anti-batteries, specific fairy play with dual avoidance and thematic tries, black selfblocks after unpins, ODT, Meredith.

4. a) 1.nNe3 nSg5+ 2.Qxh4-f3 Rg3 3.nBxe3-a1+ Kxg5-h3#

b) 1.nBd6 nSg6+ 2.Qxh3-f4 Rg4 3.nNxd6-b4+ Kxg6-h4#

An original presentation of Zabunov theme where first batteries (nB/Q and nN/Q) playing against the black King followed by creation of Royal batteries against the white King.

Comments

+6 #1 seetharaman 2013-05-22 17:50

Very interesting theme. Like the fact that there is ample time. Will be participating of course !

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+5 #2 Diyan Kostadinov 2013-05-23 03:02

You are welcome Ram! I believe that in fairy field many interesting interpretations of Zabunov theme can be achieved.

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+2 #3 Diyan Kostadinov 2013-07-22 06:19

Here is one more example with fairy Zabunov theme. Click here: prntscr.com/1gtg7j

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+3 #4 Nikola Predrag 2013-07-23 01:19

This new example is beautiful. 4th white move fires the battery and opens the line for the Locust's mating move.

However, since the Locust plays along the former pinning line, the 'unpin' is completely irrelevant and there's no strategical reason to call it 'Guidelli'.
Anyway, the beauty remains the same with or without the special names.

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+2 #5 Diyan Kostadinov 2013-07-24 08:06

Thank you Nikola for your comment.

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+3 #6 Kostas Prentos 2013-07-24 15:29

Hi Diyan,
I have a question about the interpretation of the theme: Zabunov theme - the front piece from one battery makes an ambush move and becomes the rear piece of a newly created battery.
The word that confuses me is "ambush". This implies that the thematic piece creates a battery right away, by moving behind another piece of the same colour aiming at the opposite King. Examples 1 and 2 show exactly this ambush effect, but example 3 shows a move by the thematic piece that will form a battery in the future.
So, the question is whether the ambush effect is required or not.

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+3 #7 Diyan Kostadinov 2013-07-24 16:09

Dear Kostas, the ambush move is important and should be like that for Zabunov theme. The difference in example 3 is because there the second part of the theme is with anti-battery (instead of battery). So - to have a Zabunov theme with second thematic battery - this battery should be created by ambush move and after that to firing, but if it is anti-battery - it should be in reverse (because of the specific reverse firing betwen battery / anti-battery - the first one firing when the front piece open the line, but the another firing when the front piece close the line). So in begining the front piece of the first thematic battery play on the thematic line of the following second anti-battery and after that this anti-battery firing by move of the front piece closing the line.
So in conclusion - in fairy field some specific interpretations are possible depends of the specific of the used fairy element.

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+3 #8 Kostas Prentos 2013-07-24 18:01

Thanks for the clarifications, Diyan.
I was confused, because I found a few more examples in WinChloe that were tagged as "Zabunov" theme, but did not have the ambush effect. Of course, the automatic recognition of themes in WinChloe cannot be completely reliable, but it made me think that the interpretation of the theme was not strict, regarding the ambush part. It is clear now.

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+1 #9 seetharaman 2013-11-02 19:14

Can either or both batteries be indirect?

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0 #10 Diyan Kostadinov 2013-11-02 19:31

Well, the main theme is for direct batteries (or anti-batteries etc.) and it is recomendable, but I received some unusual realizations (the fairy field give very interesting posibilities) and one of the received entries is with indirect batteries - so, Ram, you can send such an entry!

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+1 #11 seetharaman 2013-11-14 22:34

Happy to complete and send one entry (yes just one :( )to this tourney.... as I promised and hoped I would !

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0 #12 Diyan Kostadinov 2013-11-14 23:47

Thank you Ram for your participation!
One day before the deadline I have received entries from Franz Pachl, Julia Vysotska, Kostas Prentos, Mario Parrinello, Manfred Rittirsh, Miodrag Mladenovic, Ricardo Vieira, Velko Alexandrov, Alberto Armeni, Ralf Kraetschmer, Kalyan Seetharaman, Luis Miguel Martin and Ingemar Lind.
Thank you all!!
And... there is one more day for participation so its possible to receive even more.

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