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MatPlus.Net Forum General Vitaly Kovalenko (23.05.1947-5.03.2014)
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(1) Posted by Andrey Selivanov [Wednesday, Mar 5, 2014 08:32]

Vitaly Kovalenko (23.05.1947-5.03.2014)

Sad news: today died international master Vitaly Kovalenko (23.05.1947-5.03.2014).
(Read Only)pid=11759
(2) Posted by Siegfried Hornecker [Wednesday, Mar 5, 2014 09:42]

Very sad news indeed! He was a monument of chess composition.

One example of a game-like study:

(= 4+4 )

Vitaly Kovalenko
Joseph Peckover JT 1976, 6th commendation (published in EG, July 1977)
White wins

1.Rb7+ Ka1 2.g7 h3 3.g8R! Rg2+ 4.R:g2 h2+ 5.Kf2 h1Q 6.Rg1+ wins
(Read Only)pid=11761
(3) Posted by Branislav Djurašević [Wednesday, Mar 5, 2014 11:51]; edited by Branislav Djurašević [14-03-05]

According to my analysis with Rybka 4, there is a serious flaw in this study. Namely, except for 3. g8R!, there is another winning move, 3. Rf7!, because after 3...Rc8, white meets this move with 4.Rf8! and after 3...Rg2+ 4.Kh1! Kb2 (4...Rg6 5.Rf1+ Kb2 6.Rg1!) 5.Rf2+!

Am I right? Could somebody save this study?
(Read Only)pid=11764
(4) Posted by Geir Sune Tallaksen Østmoe [Wednesday, Mar 5, 2014 19:22]

It looks like you are right, unfortunately. I had not seen this study before, and I liked it, but I don't see any obvious way to repair it.
(Read Only)pid=11769
(5) Posted by Hauke Reddmann [Thursday, Mar 6, 2014 13:23]

Maybe the a-pawns further down? Without them BTW, Ra7+ is the
only winning move besides g8R.

(Read Only)pid=11773
(6) Posted by Geir Sune Tallaksen Østmoe [Thursday, Mar 6, 2014 23:53]

But with the a-pawns on a4/a5 or a3/a4, 1...Ka2 2.g7 Rc8 is probably a draw. Unless I am missing some other win, this only wins by a single tempo when the pawns are on a5/a6: 3.Kh2 Ka3 4.Kh3 Ka4 5.Kxh4 Kxa5 6.Kh5 Ka4 7.Kh6 a5 8.Kh7 Ka3 9.g8Q Rxg8 10.Kxg8 a4 11.Kf7 Ka2 12.Ke6 a3 13.Kd5 Ka1 14.Kc4 a2 15.Kb3.
(Read Only)pid=11779

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MatPlus.Net Forum General Vitaly Kovalenko (23.05.1947-5.03.2014)