Contest !

Find the solutions from 10 international draughts/checkers problems. 
The results!   

   

place Name (Country)

successive points

 Total Price
I-VI A. Gimbutas (Lithuania) 2232232222 22 pt. 30 euro + book
I-VI A. Hilchenko (Russia) 2232232222 22 pt. 30 euro + book
I-VI I. Ivatsko (Ukraine) 2232232222 22 pt. 30 euro + book
I-VI G.Magelinskas (Lithuania) 2232232222 22 pt. 30 euro + book
I-VI V. Masiulis (Lithuania) 2232232222 22 pt. 30 euro + book
I-VI Vitautas (Lithuania) 2232232222 22 pt. 30 euro + book
VII-VIII W. Ludwig (Netherlands) 2232222222 21 pt. book
VII-VIII N. Stepanyuck (Ukraine) 2232222222 21 pt.  
IX-X G. Post (Netherlands) 2222222222 20 pt.  
IX-X J. Uyterlinde (Netherlands) 2222220222 20 pt. book
XI H. v.d. Heijden (Netherlands) 2232222202 19 pt.  
XII-XV J. Konings (Netherlands) 2222220222 18 pt.  
XII-XV G.H. Kroese (Netherlands) 2222220222 18 pt. book
XII-XV J. Reiffers (Netherlands) 2222220222 18 pt. book
XII-XV W. Riemens (Netherlands) 2222220222 18 pt.  

  


The contest was:

Here are 10 really challenging problems by a famous  international draughts/checkers problem constructor: Sergej Yushkewitch from Ukraine.

In each problem: white has to move and then wins consequently. 

You can get 2 point for one correct solution. 1 point more when you find a second solution or a failure.

Prices:

1st price: 100 US dollar and a book
2nd price: 50 US dollar and a book
3rd price: 25 US dollar and a book
4th price: a book
5th price: a book
6th price: a book
7th price: a book

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 How to write the solutions?

Here are the numbers of the fields in international draughts / checkers

  1   2   3   4   5
6   7   8   9   10  
  11   12   13   14   15
16   17   18   19   20  
  21   22   23   24   25
26   27   28   29   30  
  31   32   33   34   35
36   37   38   39   40  
  41   42   43   44   45
46   47   48   49   50  

 

It's possible only to write the last field of only the white moves 
32,23,25x1,14,10,29.
Also is possible: 38-32, 29-23, 25x1, 23x14, 1x10, 16x29. (The complete white moves)
At least is also possible: 38-32(36x49)29-23(27x20)25x1(49x24)23x14(10x19)
1x10(5x14)16x29 (The complete white and the black moves).

 
   © Eric van Dusseldorp, Utrecht, 2002

1.

 

42(48)33,21,5,40,29,48 +

2.

 

43,11,2,18,24x4,36,47 +

3.

 

217,43,30,10,30x19,4,5(11)30(17)24(6)20(22)204,17 +
b.o. / second solution: 217, 172, 2, 10! +

4.

 

21,43,3,17,24(10)15,5(47)30(36)41,24,24 +

5.

 

42,13,18,31,41,40,21,1,1x29x3(10)17(43,8,14,14)33 +

6.

 

28,36,38(43)28,41,37(32)31,7,2,25,18,9,28
b.o. / second solution: 36 (28) 149, 10 +

7.

 

31,41(267,a)293(29,b)4,449,38,37,7(11)30(34)
22(37)22x30x48(19)39(16)43(24)38(30)43(35)
49(21,40)11(45)50 +
a (467) 42,36 +
b (31)36,4(24)361,33,41 +

8.

 

41,283,382,29,5,49,372,16x9,30,43 +

9.

 

33,428,31,2,504,39,21,10(27)4(32)36(37)36-41 +

10.

 

349,34,40,349,8,4,7,31(27)47,48(24,14)43 +