Dutch Championship 2017 Urk round 7

Marino Barkel - Waldo Aliar 2-0

1.35-30 20-25 2.40-35 15-20 3.44-40 20-24 4.50-44 14-20 5.33-29 24x33 6.38x29 20-24 7.29x20 25x14 8.39-33 17-21 9.44-39 21-26 10.30-24 19x30 11.35x24 11-17 12.32-28 7-11 13.37-32 26x37 14.42x31 1-7 15.47-42 17-22 16.28x17 12x21 17.34-29 7-12 18.32-28 10-15 19.43-38 14-20 20.49-44 5-10 21.41-37 20-25 22.37-32 21-26 23.40-34 26x37 24.42x31 10-14 25.45-40 14-20 26.46-41 9-14 27.41-37 14-19 28.48-42 19x30 29.29-23 18x29 30.33x35 4-9 31.35-30 20-24 32.30x19 13x24 33.28-23 11-17 34.34-29 24x33 35.39x28 8-13 36.31-27 15-20 37.40-35 20-24 38.36-31 13-18 39.44-39 18x29 40.28-22 17x28 41.32x34 2-8 42.37-32 9-13 43.38-33 13-19 44.34-29 8-13 45.29x20 25x14 46.33-29 12-18 47.42-38 14-20 48.32-28 3-8 49.38-33

diagram 1
diagram 1

From the start of the game Barkel has chosen for the attack. In this position he still has considerable pressure on the black position, due to the lead of 7 tempi. Perhaps the easiest way for black to make a draw was 20-24 50.29x20 19-23 51.28x19 13x15 52.35-30 6-11 53.33-28 15-20 54.39-34 8-13 55.34-29 13-19 56.31-26 11-17.

19-23 50.28x19 13x24 51.39-34! 20-25 52.29x20 25x14 53.33-28!

Black needs to be very careful. A problem is that it's not easy to bring the piece on square 6 into play. For example after the logical 6-11 54.34-29 11-17? white wins using 55.28-23 8-12 56.31-26 14-20 57.23-19 17-22 58.35-30 22x31 59.26x37 etc.

8-13 54.31-26 13-19 55.34-30 14-20 56.28-22 18-23 57.26-21 20-24 58.21-17 24-29 59.17-12 29-33 60.12-7 33-38 61.7-1 23-29 62.1x34 38-42 63.22-17 42-47 64.17-12 47-36 65.27-21 16x27 66.34-48 36-41 67.30-25 6-11 68.12-8 11-16 69.8-3 19-23 70.25-20 23-29 71.3-26 29-33 72.26-42 16-21 73.42x24 21-26 74.24-47 41-28 75.20-15 27-31 76.48-43 31-36 77.35-30 28-23 78.30-24

diagram 2
diagram 2

23-28?

Aliar finally collapses under the pressure. Here black had only one possible move: 23-14! 79.43-49 26-31! and now 80.47-38? doesn't work due to 14-20. If white plays 79.43-30 instead, then black can still play 26-31! 80.30-25 14-23 81.25-48 23-7! 82.48x26 7-2 83.24-20 2-19 and now that the white piece on 24 has been moved to 20, the position is a draw.

79.43-49 28-23 80.47-38 23-18 81.38-32 18-27 82.32x16 36-41 83.16-32

Ben Provoost - Hein Meijer 2-0

1.33-29 16-21 2.31-26 11-16 3.39-33 21-27 4.32x21 16x27 5.44-39 19-23 6.37-31 6-11 7.31x22 18x27 8.29x18 12x23 9.41-37 8-12 10.37-32 11-16 11.32x21 16x27 12.42-37 7-11 13.46-41 13-18 14.50-44 14-19 15.48-42 9-13 16.35-30 20-25 17.40-35 15-20 18.37-31 17-22 19.44-40 2-7 20.30-24 20x29 21.33x24 19x30 22.35x24 23-28 23.41-37 11-17 24.38-33 10-14 25.34-29

diagram 3
diagram 3

14-19?

A huge mistake.

26.43-38

and without awaiting 19x30 27.38-32 27x38 28.31-27 22x31 29.33x2 Meijer resigned.

Nico Knoops - Anton van Berkel 0-2

1.33-28 17-22 2.28x17 11x22 3.31-26 6-11 4.36-31 11-17 5.41-36 18-23 6.34-30 12-18 7.30-25 20-24 8.39-33 14-20 9.25x14 9x20 10.46-41 10-14

diagram 4
diagram 4

11.32-28 23x32 12.38x27

White takes a fork lock, but there is one black piece less in the lock than usual. It turns out to be a difficult strategy.

19-23 13.42-38 14-19 14.37-32 5-10 15.41-37 10-14 16.44-39 7-12 17.40-34 4-9 18.34-30 20-25 19.49-44 25x34 20.39x30 14-20 21.44-40 24-29 22.33x24 20x29 23.40-34 29x40 24.45x34 15-20 25.43-39

In general it is not wise to allow the opponent to take control over square 25 in this type of position. But the alternative 25.30-25 19-24 26.25x14 9x20 27.43-39 13-19 28.34-30 8-13 didn't look good for white.

20-25 26.39-33 9-14 27.33-29 14-20 28.48-43 20-24 29.29x20 25x14 30.43-39 14-20 31.39-33 20-25 32.33-29(?)

White is asking a lot from his position.

3-9 33.50-44 2-7 34.38-33 7-11 35.44-39?

This is losing. It was necessary to play 35.29-24 1-7 36.33-29 22-28 37.47-42 17-22 38.44-39 9-14 39.24-20 11-17 40.20x9 13x4 41.39-33 28x39 42.34x43 25x34 43.29x40 and white can survive.

1-7! 36.30-24 19x30 37.35x24 16-21 38.27x16 22-28 39.33x22 18x38 40.29x18 13x22 41.34-29 8-13 42.37-32 38x27 43.39-34 12-18

© Wieger Wesselink http://10x10.org