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Dear Friends,
Don’t miss the tournament Zabunov-85MT 2013 organized by KoBulChess.com website! It’s 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).

The judge of the tourney is GM Petko A. Petkov (Bulgaria).
Send problems to Diyan Kostadinov by email: dkostadinov@abv.bg

Deadline: 15.11.2013.            → See the whole announcement at KoBulChess.com website!

 

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Diyan Kostadinov
Diyan Kostadinov
6 years ago

Thank you Julia for this reminder! Now the visitors can see the biography and selected compositions of FM Vladimir Zabunov on the following direct link: http://kobulchess.com/en/composers/bulgarian-composers/388-vladimir-zabunov.html
Enjoy!

seetharaman
seetharaman
6 years ago
Reply to  Julia

Does my No.350 show the Zabunov theme also? If so, Of course it is incidental. My main idea there was quite different.

Petko Petkov
Petko Petkov
6 years ago

Yes, Ram, it is also Zabunov because after the initial battery with forward piece R follows creation of a new white battery B/R where the Rook is already rear piece. It is a specific battery-transformation – Zabunov with only two thematic white pieces. But here this theme is not the main component of the content, as you say, but only a small nice additional motive. Of course there is a realization of theme only in 1 variation.

Nikola Predrag
Nikola Predrag
6 years ago

Formal definition of the theme Zabunov requires an ambush move. The interpretations of a formally strict ambush and of an essential but not formally strict ambush, seem not very consistent. If some controversial examples might be benevolently accepted, a better question is perhaps “what can not be accepted as an ambush move”? 🙂

How can the Seetharaman’s No.350 show “Zabunov” with an ambush move? The check by rear battery piece wBh5 is completely irrelevant, wB would be just as good on h7, initially.
After 1.Rxg1+[+bRh8], Black must play 1…Rh8xh5[+wBf1] because of the check by wRg1. This is a direct attack on bK, not an ambush. Even if we speculate that after 1st black move, some kind of ambush is arranged by the arrival of wBf1, this is not a result of the initial battery and wB as the rear piece.

The convincing complexity and beauty of some theme emerge from the motivations and reasons for the play. A completely genuine “Zabunov” should use the potential of the initial battery to gain just enough time to arrange another battery. Without such a tensive motivation, the mechanism is merely ornamental and the true theme is not presented.
It looks impossible to present a true “Zabunov” in hs#, but in the ingenious example No.4 from the announcement (Tzuica 2009,2nd Prize), Petko Petkov has shown the way how to do it.