Thursday, November 23, 2017

Part №10. The Results of the Second Intermediate Finish

"The words excite and the examples attract!" – the antique aphorism says. We won’t try patience of our participants of a chess marathon too and at once we’ll pass to the examples, to the competitive tasks of the second intermediate finish!


The 5th round
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№17. B.Marx, 1898

2012.03.29_1On the diagramme №17 there is no black pawn. Where is its place? All the participants of the marathon have coped with this "nutlet" well having defined the Black infantryman in the field e5.
This little change in the position allows White to declare a mate in two moves: 1.Bb5!! ( Zugzwang). 5 points








#2


№18. A.Andersen, 1846

2012.03.29_2In the problem №18 made by an outstanding German chess player Adolf Andersen, the Black pawn disappeared somewhere… The marathon-racers had to find its haven and to put a mate in three moves.
According to the author's plan, at the Black infantryman on f4, solves 1.Re1!! Kxd4 2.e4! fe (on pass!) 3.Rd1#. 2 points
But, as the position analysis shows, Black are in Zugzwang And if to stop the pawn on the fields a2, b5 or g3, it is possible to declare a mate in three moves even 1.Bxe5. To those who found all these positions 3 more points are charged. Be attentive on turns, our marathon-racers!




#3


№19.J. Morse, 1984
(After 1 move of the White)

2012.03.29_3On the diagramme №19 one of Black pawns is not on the place. Rearrange the pawn on the necessary field and convince the leader of a heading of a neutral outcome of a duel! We rearrange a pawn d4 onс3. The position is legal. The last move of the Black was d4хс3+ (the author had a White queen in the field: 0.Qc3 +!! dc + etc.) 1.Кра3! b4+ 2.Кра4 b5+ 3.Кра5 b6+ 4.Крха6, and now any move of the Black leads to a stalemate! 5 points.
It is erroneous to rearrange a pawn d6 on с3, because there is no stalemate after 1.Кра3 с2! It is also bad to move a pawnа7 on с3: 1.Кра3 b4+ 2.Кра4 b5+ 3.Кра5 Крс4! And again a stalemate niche is destroyed.





Drawn game


№20. A chess question

How do you think, why in India in the IXth century the decision of a problem №18 would lead… to defeat of the White? Take into account that the elephant moves by modern rules and the pawn is allowed to move on two fields forward from the initial position.

The answer: According to historical researches, in India in the IXth century the stalemate was considered … as defeat for the player who had put it!
In the problem №18 (at the Black pawn on f4) after 1.Rе1 Кхd4 2. е4there just appeared an artful stalemate as the capture on the pass wasn’t put into practice (this move appeared approximately in the ХVth century).
3 points



The 6th round
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№21

2012.03.29_4On the diagramme №21 one of Black pawns prevents White to declare mate in 2 moves. It was required to remove this hindrance and solve a problem.
All the marathon-racers have removed a pawn h7:1.e4!! (Zugzwang) and received for this work … only 2,5 points. Why not the promised 5 points?!
The matter is that there is one more decision in the problem! Without a pawn b7 to the purpose leads a toothcrashing 1.Rxa6. 2,5 points.






#2


№22

2012.03.29_5 Instead of one of White pawns on the diagramme №22 there should be a White elephant… After replacement of a pawn g5 an elephant solves
1.Qc2!! 2 points.
1.~ 2.Qхc6+; 1...Nc~ 2.Rхe5+; 1...Nхd4 2.Ne3+; 1...B~ 2.Q(х)c5+; 1...Bхd4 2.Qb3+; 1...Na~ 2.N(х)c3+ 3 points (each variant gives 0,5 point)
Replacement of a pawn by an elephant and the first move didn’t cause any special difficulties to the participants. But there appeared to be some difficulties with calculations of the variants parrying the threat…





#2


№23.S.I.Tkachenko, 2005

2012.03.29_6 It is necessary to find a place for a White pawn in the bottom half of the board …
With a White pawn on h4 solves: 1.Rg5+ Kh6! 1 point
2.Bf8+ Rg7 3.Rxg7 h1Q+ 4.Kb8!! 3 points
Badly at once 4.Kxa7? Qa8+ 5.Kxa8. Therefore the White find the plan how to get rid of a pawn h4!
4...Qh2+ 5.Kc8 Qh3+ 6.Kd8 Qxh4+ 7.Kc8 Qh3+ 8.Kb8 Qh2+ 9.Ka8 Qh1+ 10.Kxa7 Qa8+ 11.Kxa8 and there is no stalemate. 5 points






Prize


№24. A chess question

Reason evolution!... It is known that the first international competition on drawing up of chess compositions was held by the English weekly magazine with the similar title. Give the name of this edition. Help: this name is often met on the main page of our site.

The answer:The English weekly magazine with a beautiful name of "Era" (Era) in 1856-57 held the first international competition on drawing up of three - moves problems.
3 points



The 7th round
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№25. M.Rejtman, 1994

2012.03.29_7 The task demanded to understand the nuances of a position №25 and make the minimum changes in it...
The position on the diagram me is illegal because of density of Black pawns on the royal flank (g6, g7, h5, h6). At removal of any of these pawns the position becomes legal.
а) minus a pawn g6 (the author's plan): 1.Bg8! 2,5 points
b) minus a pawn h6: 1.Bxg6! 2,5 points







#2


№26. M.Rejtman, 1984

2012.03.29_8 The leader of the marathon suggested the participants to find out to what camp these or those heavy figures on the diagram №26 belong. It is possible to "paint" figures in three ways:
а) the author's plan. White: Qb4, Ra4, Rc3. Black: Qb5, Ra5, Rc6
1.Nhg6! – 2.Nf8#. 1…Qb8 2.Qb1;1…Ra8 2.Ra1;1…Rc8 2.Rc1. 3 points
b) White: Qb4, Ra5, Rc6. Black: Qb5, Ra4, Rc3.
1.Nhg6! – 2.Кf8#. 1…Qb8 2.Qхb8. 1 point
c) White: Qb5, Rc3, Rc6. Black: Qb4, Ra4, Ra5.
1.Rc8! – 2.Rh8#. 1…Ra8 2. Qe8. 1 point





#3


№27

2012.03.29_9 It was required to recolour one of White pawns into Black and rearrange it on such a field that the task under the diagramme №27should be carried out.
а) a White pawn с2 recoloured into Black and it is transferable on g6.
1.Rg1+ Kb2 2.Ra1! Kxa1 3.Kc2! g5 4.hxg5 h4 5.g6 h3 6.g7 h2 7.g8Q h1Q 8.Qg7#. 2,5 points
b) any of White pawns is recoloured into Black and we put it on b2.
1.Rg1#! 2,5 points






Prize


№28. A chess question

In the American city of Seattle the robber, who penetrated at night in a bank, was found in the morning fallen asleep over the newspaper left by someone … What do you think was the reason of his sleep?

The answer:In the newspaper there was a chess problem which the robber tried to solve unsuccessfully…
- Yes, I’ve chosen not a very successful hobby for myself,-joked the robber after the sentence announcement was announced.
- Your hobby is nice, - the judge objected, - but you chose not the very profession ...
3 points



The 8th round
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№29
2012.03.29_10
#2

On the diagramme №29 the White easily mate in a demanded number of moves. Mate is possible in 2 moves and without one of White figures. There will be a mate in 2 moves and without two White figures; and even without three figures! It was required to find these positions.
Tempted solvers have accurately noticed the author's plan - the complete set of transformations of a pawn.
On the diagram: 1.с8N+.
Without one figure: without a pawn с6: 1.с8B. But there are two more positions without one figure where the task is also carried out. Without an elephant а5: 1.Nе6; without an elephant b7: 1.с8R.
Without two figures. Without an elephant b7 and a pawn с6: 1.с8R. And there are three positions more: without two elephants: 1.с8Q; without an elephant а5 and a pawn с6: 1.с8Q; without an elephant b7 and a horse: 1.с8R.
Without three figures: without two elephants and a pawn с6: 1.с8Q.
The second position is possible: without two elephants and a horse: 1.с8Q.
Simple calculation shows that together with the diagram №29 there are 10 positions, in which the tasks are carried out. Each found position brings each marathon - racer 0,5 point. The total number makes 5 points.


№30
2012.03.29_11
#3

On the diagramme №30 all the figures are White. It was required to "paint" kings and to carry out the task…
The mate in 3 moves is reached at any of two variants of colouring of kings:
а) The White king b2, the Black king d4: 1.Rc3! (Zugzwang)
1…Кe5 (Кe4) 2.Re7+. 2,5 points
b) the White king d4 – the Black king b2:
In this case the problem has 10 decisions with Zugzwang after the first move:
1. Qg6, Qg7, Qg8; Rd3, Rf3, Rg3, Rg7, Bf3, Bg4, Bh5. 2,5 points
This abundance of decisions explains not a whim of a leading master of the marathon to confuse the participants of the competition. All is much easier! Because of an error of the type-setter one of the horses on the diagramme №30 is not on the place. About this trouble the leader became to know too late when the answers started to arrive… Fortunately, the task could be done taking into account this error as well.
As indemnification, dear marathon - racers, take pleasure in the decision of this nice problem in correct edition (№30а)


№30а.M.Knopfler, 1958

2012.03.29_121.Qg8!! (Zugzwang)
1…Kc5 2.Qa8! With subsequent "asterisk" of the Black king
2…Kxb4 3.Qa3#; 2...Kb6 3.Qa7#; 2...Kd6 3.Qf8#; 2…Kd4 3.Qa7#.
Under the similar scenario there passes a game in the second variant too:
1...Kxe3 2.Re7+
2…Kd2 3.Nf3#; 2...Kd4 3.Qg1#; 2...Kf2 3.Nd3#; 2...Kf4 3.Qg4#.







#3


№31. V.Smyslov, 1986

2012.03.29_131.g6! 2 points
1…hg (1…Bb6 2.Bb8! Rxb8 3.g7) 2.h7 Bf6! 3.Bb8!! 4 балла
Misses a victory greedy 3.Kxf6? из–за 3…0–0–0!!
3…R:b8 4.K:f6 Kd8 5.h8Q Kc7 6.Qh2. 5 points









Prize


№32. A chess question

Name a surname of a problemist, who made only one etude. The uniqueness of the situation is that the etude was made … in 3 years after a mention of this composition in the well-known novel!

The answer:This problemist is Pavel Efimovich Neunyvako. His «charming etude» is mentioned in the well-known novel of the inhabitants of Odessa Ilya Ilf and Evgeniy Petrov «Twelve chairs». As it is known, the novel was issued in 1927, and the etude of Neunyvako appeared only … in 1931! He worked-off, obviously, the advance payment!! 3 points



By the results of the 5th-8th rounds the first on the second intermediate finish with the greatest possible luggage (72 points!) is the bronze prize-winner of the first intermediate finish Anatoly Handurin. The second place (66), as well as at the first stage, has got Vladislav Tarasyuk.
The third place (65,5) is at skilled solver Anatoly Kostenko from Cherkasy area.
And only the fourth place (59) is at the winner of the first stage the grand master Valery Kopyl
By the results of 2 intermediate stages the group of solvers of 6 person went forward:
Anatoly Handurin (138 points); Vladislav Tarasyuk (132,5); Valery Kopyl (126); Anatoly Kostenko (123,5); Valery Krivenko (110) and Igor Maksimenko (104)…
As you can see, all struggle is still ahead!
And now let's get acquainted with the tasks of the 10th round of our chess marathon.


№37

2012.03.29_14












#2
Return a move of the White king and solve the problem.


№38

2012.03.29_15












#3
One of White pawns is not on the place. Rearrange a pawn on the necessary field (except the7th horizontal!) and carry out the task.


№39

2012.03.29_16












Prize
Don’t be afraid, dear solvers, White have a chance to win a duel! But for this purpose you need to find a place for a White elephant in the top half of the board…


№40. A chess question

This well-known scientist, whose main invention is known to everybody, for some time taught in Odessa (where, by the way, and made the ingenious opening!)… In his free time from scientific work he liked to play chess and make suitcases. Who is this person?


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