World championship 2013 finals round 5
The Ukrainian grandmaster Anikeev played the ingenious move 38.43-38! This makes 3-8 unattractive, for example 39.50-44! 8-12? and white wins using 40.30-25! 12-18 (not ≡ 6-11? 41.25x14 19x10 42.22-17 11x31 43.42-37 31x33 44.39x17 W+) ≡ 41.25x14 19x10 42.22-17 and the threat 17-12 is decisive. Due to this black has to play an uncomfortable move like ≡ 3-9, that further weakens the black position. This could explain Dul's next move, which is a severe mistake. ≡ 20-25? 39.39-33! 25x34 40.33-29 24x33 41.38x9 3x14 42.35-30! Perhaps black only counted on ≡ 42.21-17?, which leads to a draw after 34-39 43.42-38 19-23 44.17-12 7x18 45.22x13 14-19 46.13x24 23-28. ≡ 34x25 43.21-17! After this sacrifice the position is hopeless for black. The two white defenders on 42 and 50 easily keep black from making a king. 19-23 44.17-12 7x18 45.22x13 25-30 46.13-8 14-20 47.8-3 20-25 48.3-12 23-28 49.12-40 28-33 50.40-44
Atse played very aggressively against Boomstra, but during the early middle game it became clear he had overplayed his hand. 29.42-38? With ≡ 29.39-34! 17-22 30.32-28 22x31 31.36x27 21x32 32.34-29 24x22 33.37x6 white could escape from the situation, although black keeps a substantial advantage. ≡ 17-22 30.36-31 11-17 31.38-33 23-29 Black forces a material advantage. 32.39-34 29x38 33.32x43 21x32 34.37x28 26x37 35.41x32 22x33 36.34-29 33-38 37.29x9 13x4 38.43-39 38x27 39.25-20 White's only plan is to make a break through on the black right wing. But in the mean time black will force his way through the vulnerable white center. 8-13 40.40-34 17-22 41.30-24 19x30 42.34x25 27-32 43.20-15 32-38 44.35-30 22-28 45.47-42 After ≡ 45.30-24 the break through 28-33 46.39x28 38-43 would be decisive. ≡ 38x47 46.30-24 47x20 47.25x14 28-33! 48.39x28 13-19 49.14x23 18x29 50.45-40 16-21 51.40-35 29-34 52.28-23 21-27 53.23-19 27-32 54.19-14 32-38 55.15-10 4x15 56.14-9 38-43 57.9-3 12-18 58.46-41 43-49 59.3-25 34-40 60.35x44 49x40 61.25-14 40-44! It looked like white could still hope for a draw in this endgame. But by placing his king on the diagonal 6/50 Boomstra separates the white piece on 41 from the black pieces. And since the white king cannot stop the three black pieces from advancing, the game is over now. 62.41-37 44-50 63.14-19 15-20 64.19-10 20-25 65.10-19 50-39 66.19-14 39-43 67.37-31 43-39 68.31-27 39-50 69.14-19 50-17 70.19-24 18-23 71.24-42 17-6 72.42-24 6-50 73.24-42 25-30 74.42-37 23-29 75.37-42 29-34 76.42-48 50-6 77.48-43 6-39 78.43-32 30-35 79.32-23 39-17
In his game with Ndjofang Chizhov played like during the days that he reigned the draughts world. 30.37-31! This brings the threat 31-27 21x23 33-29 24x33 38x16 into play. ≡ 2-7 31.31-26! 9-13(?) After this move white starts a brilliant long term attack against the black left wing. 32.26x17 11x22 33.28x17 12x21 34.34-30! 25x34 35.39x30 20-25 36.44-39 25x34 37.39x30 7-12 38.43-39! Slowly it becomes clear that the white attack is unstoppable. 21-27! Ndjofang understands well that his only chance to survive is to start a counter attack against the white left wing. 39.39-34! 13-18 40.34-29! 12-17 41.29x20 15x24 42.33-29! 24x33 43.38x29 17-22 44.30-25 27-31 45.36x27 22x31 46.25-20 According to the computer 19-24! 20-15 24x33 15-10 31-37 42x31 33-38 10-4 38-42 4x27 is a draw, but this is not obvious. ≡ 31-36 47.20-15 36-41? This logical move is losing. With the hard to find ≡ 19-23! 48.29-24 36-41 49.42-37 41x32 50.15-10 18-22! black could still make a draw. ≡ 48.42-37 41x32 49.15-10 18-22 50.10-4 22-28 51.29-23 6-11 52.23x14 32-37 53.4-36
© Wieger Wesselink https://10x10.org