Sunday, September 24, 2017

Part №5. The results of the intermediate finish

On conditions of a chess marathon, after each four releases we’ll bring preliminary results with the analysis of competitive tasks for this period.
We will remind that for the correct and full decision of the problems 5 points are charged. The chess question is estimated by 3 points.

For those participants who has risked for the first time to try the forces in a marathon I will notice that at the decision of two-moves it is enough to specify the first course. For three-moves - except an introductory move it is necessary to find the threat, the moves of the black, protecting from this threat (if it is a problem on Zugzwang, all the moves of the black), and all the necessarily second moves of the white. It is possible not to show check-mate moves.

Making out the decision of the problem it is enough to solve the author's plan - the main variant of the problem. I’d like to give an advice to the beginners. If you doubt, what variant of the problem is the main - give full decision with all the variants. This way is often used by skilled chess-players!

1 round


№1. J.Vilner, 1912
(Correction, 2012)

001 1.Qg6! 5 points
Some participants of the marathon have written to the leader that the role of the black pawn h6 …
Yes, and even without this the infantryman mates the author's 1.Qg6! But the composition is valuable not only by the valid decision. Is there a false trail 1.Kh8 in the problem? 1…Qс8 + 2.Re8#, but 1…Ra8+!
So, without a pawn h6, except 1…Ra8 +! there would have been one refutation more - 1…Rh6+.
Furthermore, without this pawn there is no answer to the check 1...Rh6 that, of course, does not adorn the problem.



#2

№2. J.Vilner, 1925
(Correction, 2011)

002 1.Kf1! 2 points
1…a1Q 2.B:d3+! (threat) 1 point
1...de+ 2.K:e2 1 point
1...d2 2.f3+! 1 point






#3

№3. T.Gorgiev, 1929

003 1.Bb3!! 2 points
The Point is on the first move! The other steps back of the bishop are easily parried by the black: 1.Bc4 (d5)? Kh6 + 2.Kf4 Bc3! 3.Nb3 Kh5 4.Kg3 Be1 + 5.Kh3 B:h4 6.Be2 (f3) + Kg5 7.Nd2 Kf4 8.K:h4 Ke3, the game ends in a draw..
1... Kh6 +! 2.Kf4! Bc3! 3 points
3.Nc4 Kh5 4.Kg3 Be1+ 5.Kh3 B:h4 6.Bd1+ Kg5 7.Nd2! 4 points
7…Be1 (7...Bf2 8.Ne4+) 8.Nf3+, it is the threat from both sides of the figure. 5 points




A prize (a winning game)

№4. A chess question
As it is known, the firm Odessa dish is a well-known stuffed fish. Having arrived to Odessa, one ex-world champion on chess has ordered some portions of this delicacy. The matter is that in his country known for seafood, the similar culinary masterpiece is not present.
Alas, the stomach of the visitor could not master such a quantity of this delicacy and punished our hero with terrible stomach upset … On the final banquet our hero ate only dried crusts..
Give the surname of this chess player.

The answer: He is the Dutch grand chess master and the doctor of mathematics Machgielis «Max» Euwe (1901-1981). And this unpleasant event occurred in 1974 when Euwe arrived to Odessa on a semifinal match of applicants between Petrosyan and Korchnoy. 3 points

2 round


№5. J.Vilner, 1912
(The version, 2012)

004 1.Bh8!! 5 points
Does not solve 1.с4? because of the exact 1 … b4!








#2

№6. N.Rezvov, 1981

005 The task demanded to put the white king on one of the sections of the first horizontal and to carry out the task.
The king should be in the field e1.
Why? See the final mates!
1.Nc3! (Zugzwang) 2 points
1…Kd4 2.Ned5! Kd3 3.0-0-0#! 1,5 points
1…Kf4 2.Nf5! Kf3 3.0-0#! 1,5 points




#3

№7. T.Gorgiev, 1959
(Correction, 2012)

006 1.Nf4+ Kc3! 2.N:g2 Nd2! 1 point
Не спасает 2...Kb3 3.Bf5! Ng3 (3...Nh2 4.Ke2) 4.Bg6 K:a3 5.Ke1 Kb3 6.Kf2 Nh1+ 7.Kg1 Ng3 8.Nf4 Kc3 9.Kg2 and the black knight perishes.
3.Ne3!! 3 points
False 3.Nf4?! Because of 3... Nc4! 4.Ne2 + Kb2!! 5.a4 Ka3 6.Bd7 Nb6, the game ends in a draw..
3...Nb1! 4.a4 Kb4 5.a5!! 4 points
5…K:a5 6.Kc2! Na3+ 7.Kb3 Nb5 8.Nc4#! 5 points



A prize (a winning game)

№8. A chess question
The end of the old and the beginning of a new century causes polar associations in many people - from a doomsday before an era of mercy …
And what a sign event for reasonable citizens of Odessa was remembered the 1900?

The answer:In 1900 "The Odessa chess society" was officially registered.. 3 points

3 round


№9. T.Lattsel, 1955

007

On the diagramme №9 a white king disappeared somewhere. On what field of the 8th horizontal it should be?
Such fields on the 8th line are not one, but two: e8 and h8. It is a highlight in it and a task dirty trick!
With the king on e8 solves 1.Kg6! 2,5 points
With the king on h8 - 1.K:h6! 2,5 points






#2

№10. J.Vilner, 1913
(Correction, 2012)

008 1.Qe3!! 2 points
Threat: 2.Bd6+! 1 point
1…de 2.d4+! 1 point
1…fe 2.f4+! 1 point






#3

№11. T.Gorgiev, 1936
(Correction, 2012)

009 1.a4!! K:a4. Badly 1...R:a4 (1…R:d4 2.Ra6+!) 2.Ra6+ 3.K:b5 R:a4 4.K:a4 Kg6 and the pawn "d" passes in queens. 1 point
2.b6! R:d4 (2…Rb4 3.Rd6!) 3.b7 Rh4+! 2 points
Loses at once 3 … Rb4 4.Rg4! Or 3 … Rd8 4.Ra6 + ~ 5.Ra8 etc.
4.Kg7! 3 points
False 4.Kg5?! R:b4 5.Ra6 + Kb3 7.Ra7 Rb6! 8.Kf5 Kb4 9.Ke5 Kc5, the game ends in a draw..
4... R:b4 5.Ra6 + Kb3 6.Ra7 Kc4. Any more does not rescue 6... Rb6 7.Kf7 Kc4 8.Ke7 Kc5 9.Kd7 and the white king rate in rate has had time to support a pawn.
7.Ra4! R:a4 8.b8Q, A prize (a winning game)
5 points

A prize (a winning game)

Task №12. A chess question:
With what grand master living in Odessa and who moved later on to Moscow, Yury Lvovich Averbah was on friendly terms?

The answer:Аverbah was on friendly terms with the first Soviet grand chess master Boris Markovich Verlinsky
3 points

4 round


№13. I.Kavnatsky, F.Kapustin, 1984

010 On the diagramme №13 the superfluous white pawn is printed. Remove this pawn and you will solve the problem.
It is necessary to remove the pawn d4.
1.Qh8!! 5 points







#2

№14. J.Gordian, I.Kavnatsky, 1987

011 1.Rh7!! 2 points
1…~ 2.K:e6+ B:e6 3.Rc7# 1 point
1…Q:g7 2.Qg3! 1 point
1…B:g7 2.Bb2! 1 point
Antimagnet is in operation!





#3

№15. T.Gorgiev, 1938

012 1.Rh1!! 2 points
It is tempting 1.Ng4?! Rf3 +! 2.Nf6 + Kh6! (But not 2... R:f6 +? 3.K:f6 R:e8 4.Kf7! With a classical blow from the collective problem of Barbje and Saavedra) 3.Rg1 Rh7 +! 4.Ke6 Re3 + 5.Kf5 Rf3 + 6.Ke6 Re3 +, the game ends in a draw.. 3 points
2…Rh5 3.Ng4!! 4 points
3…Rf8+! (3…R:h1 4.Bf5#!) 4.K:f8 R:h1 5.Bf5+ Kh8 6.Ne5! (Threat 7.Nf7#)
6…Rh7 7.Ng6#! 5 баллов


A prize (a winning game)

The task 16. A chess question.

Who from the world champions on practical game, being on tours in Odessa, had already carried a title of the world champion on two-moves solutions?

The answer: In 1915 José Raul Capablanka for 20 minutes solved 10 two-moves, having won the internal competition of "The Philadelphia society of fans of chess problems". For this success the society board gave Kapablanke a title "the world champion on two - moves solutions? 3 points

By the results of 4 rounds the first on the intermediate finish with the result of 67 points from possible 72 was the vice-world champion on chess compositions solutions, the grand chess master of Ukraine from Poltava Valery Kopyl.

The question №12 has not obeyed him and the problem №7 has not been completely solved. The second place gained the master of sports from Kharkov region Vladislav Tarasyuk (66,5 points). He, as well as the winner, could not solve the question №12 and did not find the second field for a white king in the problem №9.

The third place got a skilled international master from Kharkov Anatoly Handurina (66 points).

Anatoly has excellently solved all the problems but has stumbled on questions №4 and №12. Our congratulations to the heroes of the first intermediate finish! In the following release of our chess marathon we’ll tell you about our winners in more details.


And now we’ll pass to the "nuts" of the 5th round with which the second stage of our marathon begins. This time the tasks will be more difficult, and our Marathon racers will have to stir a brain crinkle seriously!

№17. №18. №19.
2012.02.14_1 2012.02.14_2 2012.02.14_3
    #2                                                       9+8 #3                                                       9+4 The game ends in a draw          1+14

There is no black pawn in the position
№17. Where is its place?

ВThe black pawn was gone
somewhere in the problem №18
too. Find its place and solve
the problem.

The proverb says that one man is no
man. But there are unique situations
when even one soldier successfully
resists a terrible army … On the
diagramme №19 one of the black
pawns is not on the place. Rearrange a
pawn on the necessary field and convince
the leader of a heading in a neutral
outcome of a duel!

 

№20. A chess question.

How you think, why in India in the IXth century the decision of the problem №18 would lead … to defeat of the white?

Meet you in a week!
Your heading leader, Honoured Chess Master of Sports of Ukraine Sergey Tkachenko.