Dutch Championship 2017 Urk round 4

Alexander Baliakin - Anton van Berkel 2-0

1.32-28 17-21 2.37-32 19-23 3.28x19 14x23 4.41-37 11-17 5.34-29 23x34 6.39x30 6-11 7.44-39 13-19 8.31-27 1-6 9.30-25 19-24 10.25x14 10x19 11.33-28 8-13 12.39-33 2-8 13.40-34 5-10 14.43-39 10-14 15.37-31 18-22 16.27x18 12x23 17.31-27 7-12 18.49-43 13-18 19.34-29 23x34 20.39x30 14-20 21.30-25 18-23 22.25x14 9x20 23.46-41 4-9 24.41-37 9-13 25.45-40 21-26

diagram 1
diagram 1

26.40-34! 24-29 27.33x24 20x40 28.35x44 12-18 29.43-39 17-22 30.28x17 11x31 31.36x27

Baliakin has gained a long term advantage. The black center is very inflexible, and moreover the corner pieces on 16 and 26 are quite weak.

19-24 32.38-33 15-20 33.42-38 20-25 34.47-42 8-12(?) 35.33-28! 13-19 36.39-34 3-9 37.44-40 6-11 38.37-31 26x37 39.42x31 11-17 40.40-35

diagram 2
diagram 2

17-21?

Black is still under a lot of pressure, mainly because the normal plan 9-13 fails due to 41.31-26! W+ The only defense was 9-14 41.31-26 23-29 42.34x23 18x29. At first sight this looks very dangerous for black, but it turns out that white cannot keep the position under control after 43.27-22 25-30 44.22x11 16x7 45.32-27 30-34 46.48-43 7-11. For example 47.38-32 11-16 48.43-38 14-20 49.26-21 20-25 50.50-45 12-18 51.21-17 18-22! 52.27x18 34-39 and black escapes.

41.28-22!

Of course. The game is over now.

9-13 42.31-26 12-17 43.22x11 16x7 44.26x17 24-30 45.35x24 19x39 46.27-21 25-30 47.21-16 30-34 48.17-12 34-40 49.12x1 40-45 50.1-6 39-44 51.50x39 23-29 52.32-28

Waldo Aliar - Ron Heusdens 1-1

1.32-28 19-23 2.28x19 14x23 3.33-28 23x32 4.37x28 16-21 5.39-33 10-14 6.44-39 5-10 7.41-37 21-26 8.37-32 26x37 9.32x41 14-19 10.41-37 17-22 11.28x17 11x22 12.46-41 10-14 13.37-32 7-11 14.41-37 1-7 15.50-44 11-17 16.33-28 22x33 17.39x28 7-11 18.44-39 17-22 19.28x17 11x22 20.39-33 12-17

diagram 3
diagram 3

White has a small disadvantage now, mainly because of the inactive formation on his right wing. In the next phase of the game Aliar lacks a good plan. Heusdens must have welcomed the backward exchanges on the 23rd and the 30th move.

21.37-31 6-11 22.31-26 8-12 23.32-27 22x31 24.26x37 18-22 25.43-39 13-18 26.36-31 9-13 27.31-26 2-7 28.48-43 4-9 29.37-32 11-16 30.32-27 22x31 31.26x37 17-22 32.38-32 16-21 33.34-30 18-23 34.30-25 20-24

diagram 4
diagram 4

35.49-44?

This is more than the white position can handle. It was better to play 35.40-34! and after 22-27 36.33-28 27x38 37.43x32 21-27 38.32x21 23x41 39.47x36 black still has a significant advantage, but not enough to win the game.

22-27! 36.42-38 12-18 37.47-41 7-11 38.33-28 21-26(?)

After 11-17! 39.41-36 18-22 40.36-31 22x42 41.31x11 42x31 42.11-7 31-36 the white position is extremely hard to defend.

39.32x21 26x17 40.40-34 23x32 41.38x27 11-16 42.34-30? 24-29! 43.41-36 19-23 44.44-40 17-21 45.37-32 18-22 46.27x18 13x22 47.40-34 29x40 48.45x34

diagram 5
diagram 5

22-27?

A winning plan was 14-19 49.39-33 15-20 50.25x14 19x10!! etc.

49.43-38 21-26 50.32x21 16x27 51.39-33 26-31 52.34-29 23x34 53.30x39 31-37 54.33-28?

The correct defense was 54.33-29 9-13 55.39-33 and white can still make a draw.

9-13 55.28-23 27-31?

Too early. After 3-8 56.39-34 27-31 57.36x27 37-41 black would have won the game.

56.36x27 37-41 57.27-22 41-46 58.22-17 46x19 59.17-11 19-23 60.38-32 23x46 61.11-7 3-8 62.25-20! 14x25 63.7-1 46-19 64.1-34 19-24 65.34-45 25-30 66.45-50 24-38 67.35x24 38x20 68.39-33 20x42 69.50-17

Marino Barkel - Wouter Sipma 1-1

1.32-28 17-21 2.37-32 11-17 3.31-26 19-23 4.28x19 14x23 5.36-31 7-11 6.33-28 9-14 7.28x19 14x23 8.31-27 10-14 9.38-33 5-10 10.41-36 14-19!?

A very risky move.

11.36-31 10-14 12.33-28 23-29 13.34x23 18x29

diagram 6
diagram 6

14.40-34!

The proper response. After 14.43-38? it is black who gains an advantage using 29-33 15.38x29 17-22 16.27x9 4x13 17.26x17 11x24.

29x40 15.45x34 12-18 16.39-33 1-7 17.44-39 7-12 18.46-41 4-9 19.49-44 2-7 20.41-36 18-22 21.27x18 12x23 22.31-27(?)

This allows black to escape using 23-29! 23.34x23 17-22 24.26x17 22x31 25.36x27 11x31. Therefore 22.34-29 23x34 23.39x30 would have been more accurate.

20-24 23.42-38 13-18 24.36-31 8-13 25.48-42 14-20 26.34-30

diagram 7
diagram 7

9-14?

This is losing. With 24-29! 27.33x24 20x29 28.39-33 17-22! 29.28x17 21x12 30.33x24 9-14 31.30-25 19x30 32.25x34(!) 23-28 33.32x23 18x49 34.43-39 49x21 35.26x10 15x4 black should have simplified the position, although white still keeps a slight initiative.

27.47-41 3-8 28.30-25?

Barkel becomes the victim of a well-known combination. After 28.44-40! 24-29 (and not 17-22? due to 29.26x17! 24-29 30.33x24 22x44 31.50x39 20x29 32.39-34 11x22 33.32-28 23x21 34.34x1 W+) 29.33x24 20x29 30.39-34 the black position would have been hopeless.

24-29! 29.33x24 19x30 30.28x10 15x4 31.35x15 4-10 32.15x4 13-19 33.4x22 17x48 34.26x17 48x12 35.39-34! 12x49 36.38-32 49x38 37.32x43

Sipma is unlucky that white has just enough defense after this piece sacrifice.

19-24 38.43-39 11-17 39.39-34 24-30 40.34-29 17-21 41.25x34 21x32 42.29-24 32-38 43.24-20 38-43 44.20-15 43-48 45.34-29 48-25 46.15-10 25-20 47.29-23 20-9 48.10-5 7-12 49.5-19 9-18 50.19x2 18x40 51.2-13 12-17 52.50-45

Ben Provoost - Nico Knoops 2-0

1.32-28 20-24 2.34-30 17-21 3.31-26 11-17 4.40-34 18-23 5.45-40 23x32 6.37x28 7-11?

This looks like a dangerous experiment.

7.41-37 13-18 8.30-25 1-7 9.46-41 18-22 10.37-31 21-27 11.34-30 8-13 12.39-34 13-18 13.41-37! 19-23 14.28x19 24x13 15.50-45 14-19 16.44-39 10-14 17.34-29!

diagram 9
diagram 8

3-8

This is quite a decision. But also after 2-8 18.29-24 18-23 19.33-29 23x34 20.40x29 the problems for black are far from over.

18.37-32 5-10 19.32x21 16x27 20.29-24 18-23 21.33-29 23x34 22.40x29 13-18 23.24x13 8x19 24.29-24 18-23 25.24x13 9x18 26.45-40 2-8 27.40-34 23-28 28.30-24 8-13 29.38-33 13-19 30.24x13 18x9 31.33-29 9-13 32.34-30 12-18

diagram 9
diagram 9

33.39-34

The black position has several structural weaknesses, and Provoost will finish the game in great style after this move. But the computer shows there was an even stronger move: 33.42-38!! At first sight it may look like black can escape using the exhange 28-33 34.39x28 22x42, but after 35.48x37 7-12 36.31x22 17x28 (also 18x27? 37.29-24! 13-18 38.37-32!! 27x38 39.43x32 is lost) 37.47-42! 11-17 38.43-38 15-20 39.38-32 13-19 40.32x23 19x28 41.42-38 he loses a piece.

7-12 34.49-44 14-19 35.44-40 19-23 36.43-39 27-32?

The last chance to fight for a draw was 28-32 37.29-24 23-28 and now for example 38.34-29 10-14 39.47-41 11-16. Now white will win a piece and the game.

37.48-43 32-37 38.42-38 37-42 39.38-32 28x37 40.47x38 22-27 41.31x42 17-22 42.38-33 13-19 43.30-24 19x30 44.35x24 11-17 45.40-35 6-11 46.42-38 11-16 47.34-30 23x34 48.33-29 34x23 49.26-21 17x26 50.24-20 15x24 51.30x8

Auke Scholma - Martijn van IJzendoorn 1-1

1.31-27 19-23 2.33-28 17-21 3.28x19 14x23 4.39-33 10-14 5.44-39 5-10 6.33-28 21-26 7.28x19 14x23 8.38-33 9-14 9.50-44 4-9 10.42-38 11-17 11.34-30 14-19 12.30-25 10-14 13.40-34 6-11 14.44-40 17-21 15.34-30 11-17 16.30-24 19x30 17.25x34 14-19 18.47-42 1-6 19.34-30 7-11 20.30-25

diagram 10
diagram 10

2-7(?)

In this interesting 'half classical' position Van IJzendoorn is asking too much of his position. After this move there is a disbalance in the black position. A more realistic approach would be 17-22 21.25x14 22x31 22.36x27 19x10.

21.25x14 9x20 22.40-34 3-9 23.49-44 20-25

Now 20-24? 24.44-40 17-22 25.36-31 15-20 26.34-29 23x34 27.39x30 would be very unpleasant for black. But 9-14 was worth considering. Then white still has a small advantage after 24.44-40 17-22 25.34-29 22x31 26.36x27 23x34 27.40x29, but not enough to be worrying.

24.44-40! 15-20(?) 25.33-28! 17-22 26.28x17 11x31 27.36x27

Now the white advantage is already considerable.

7-11 28.39-33

diagram 11
diagram 11

9-14?

Here white could have won using the beautiful 29.33-29! 19-24 (also 12-17? fails due to 30.37-31 26x28 31.27-22 18x27 32.29x9 14x3 33.38-33 28x30 34.35x2 W+) 30.37-31! 26x28 31.38-33 28x30 32.42-38!! 24x42 33.35x15 21x32 34.48x10 W+

Since 12-17? is also not possible (29.34-30 25x34 30.40x29 23x34 31.27-22 17x39 32.38-33 39x28 33.32x25) black was forced to play the ugly 19-24, with a terrible position.

29.33-28?

But Scholma, who is very skilled in tactical possibilities, misses this rare opportunity to topple the leader.

23-29! 30.34x23 18x29 31.37-31 26x37 32.42x31 19-24! 33.40-34 29x40 34.45x34 21-26 35.41-37 13-18!

diagram 12
diagram 12

With a couple of inventive moves Van IJzendoorn has completely equalized the position.

36.43-39 24-29 37.34x23 18x29 38.27-22 14-19 39.31-27 29-34 40.39x30 25x34 41.48-43 8-13 42.43-39 34x43 43.38x49 12-18 44.49-43 20-25 45.43-39 25-30 46.35x24 19x30 47.37-31 26x37 48.32x41 11-17 49.22x11 6x17 50.41-37 13-19 51.46-41 19-24 52.37-31 18-23 53.28x19 24x13 54.41-37 13-19 55.37-32 19-24

© Wieger Wesselink http://10x10.org