World championship 2013 finals round 6

Jean-Marc Ndjofang
Jean-Marc Ndjofang

Ndjofang - Schwarzman 2-0
Jean-Marc Ndjofang - Alexander Schwarzman 2-0

In the game between Ndjofang and Schwarzman, both players needed to win, if they wanted to play a role for the world title. With little time left for both players, Schwarzman was playing for a combination. 9-14 Another idea was to play   20-25 44.34-30 25x34 45.39x30 9-14 (after   23-29 white makes a draw using 46.43-39 29x47 47.28-22 17x28 48.32x3 21x41 49.30x8 )   46.43-38 23-29 47.28-23 19x39 48.30x10 with a draw.   44.34-30! Ndjofang noticed the devastating combination after   44.42-38 20-25 45.34-30?A 25x34 46.39x30 17-22 47.28x26 23-28 48.32x12 13-18 49.12x23 19x48 50.30x10 48x42 B+ A Here   45.28-22! 17x28 46.33x22 24-29 47.39-33 29x40 48.35x44 25-30 49.33-28! would be just enough to make a draw.   20-25 45.39-34 21-26 46.43-39! After   46.42-38?! black can still take the combination 17-22 47.28x17 23-28 48.32x12 13-18 49.12x23 19x48 50.30x10 48x42, but this time the result is a draw: 51.17-12 42-31 52.12-8 31-18 53.35-30! 18x45 54.30-24! etc.   17-21? A big mistake. Black should play   26-31 47.37x26 23-29 48.34x21 25x43 49.21-17 43-48 with a draw, for example using the coup Turc 50.28-23 48x38 51.32x43.   47.42-38! 14-20 48.28-22 24-29 49.33x15 23-28 50.32x12 21x41 51.12-7 41-46 52.7-1 16-21? 53.22-17 21x12 54.1x4 and black resigned.

Roel Boomstra - Erdenebileg Dul 2-0
Roel Boomstra - Erdenebileg Dul 2-0

In this position Boomstra chose a very aggressive plan, by taking control of square 27. The motivation for this was probably the missing black piece on 9. This makes it hard for black to find a constructive plan, and in this game Dul does not succeed in this. 21.37-31! 26x37 22.42x31 21-26 23.31-27! 7-11 24.40-35 4-10 25.44-40 2-7(?) It seems rather early to give up the formation 2/8/13. 26.48-42 14-19 27.49-43 19x30 28.35x24 10-14 29.40-35 14-19 30.27-21 19x30 31.35x24 17-22 32.28x17 11x22 33.21-16 6-11 34.32-27! Of course not   34.32-28? due to 22-27! and it is black who takes the lead.   22x31 35.36x27 11-17 36.33-28! Boomstra offers his opponent the possibility to simplify the game using the exchange 18-23 37.29x9 20x40 38.45x34 8-13 39.9x18 12x21 40.16x27 But the remaining 6x6 position is lost for black, for example 15-20 41.39-33 5-10 42.33-28 20-24 43.43-39 7-12 44.27-22 17-21 45.22-17 12-18 46.17-11 etc.   5-10 37.45-40 10-14 38.38-32? This gives black the opportunity to escape with 26-31! 39.27x36 18-22 40.39-33 14-19 41.43-39 19x30 42.32-27 22x31 43.36x27 30-35! More accurate was   38.40-35 7-11 39.16x7 12x1 40.38-32 with a winning position for white.   14-19? 39.40-35 19x30 40.35x24 17-22 41.28x17 12x21 42.42-37! 8-12 43.43-38! Now 12-17? is prevented by 44.37-31 26x28 45.38-33 21x32 46.33x2 and so Dul had to settle for the lost endgame after   18-23 44.29x9 20x40 45.39-34 40x29 46.9-4 29-34? 47.4-13! 34-40 48.37-31! 26x28 49.13-35 21x43 50.35x19 12-17 51.19-28 7-12 52.28x6 12-18 53.16-11 and black resigned.

Ano - Ivanov 2-0
Adonis Ano - Artem Ivanov 2-0

Here Ivanov wisely avoided the tempting move 10-14?, since that would lose a piece after 29.24-19! 13x33 30.39x17 followed by 31.37-31 26x37 32.17x26 W+.   13-19 29.24x13 8x19 30.29-24 19x30 31.35x24 21-27! 32.38-33 18-23! Black tries to take control of the center. 33.33-29! 23-28 34.24-19! Ano uses the gap that black left behind, to advance deep into the the heart of the black position. 12-17 35.37-31 26x37 36.42x31 28-32 37.19-13 10-14 38.48-43 17-21 39.31-26 32-37? Here   22-28 40.26x17 32-37 41.17-12 6-11! was still possible.   40.26x28 37-42 Now Ano finishes the game with a combination. 41.28-22! 27x9 42.34-30! 25x23 43.43-38 42x33 44.39x10 9-14 45.10x19 4-9 46.44-39 6-11 47.39-33 11-17 48.33-28 2-7 49.40-34 17-21 50.28-22 9-14 51.19x10 15x4 52.34-29 7-11 53.29-23 11-16 54.23-18 21-26 55.18-12 16-21 56.12-7 21-27 57.22x31 26x37 58.36-31 and black resigned.

© Wieger Wesselink http://10x10.org