Seaport Masters 2012 round 8
In the 8-th round some of the players lost their concentration. When Borghetti played 9-14? Mbongo easily won a piece using 25.36-31! and due to the threat 31-27 black had to sacrifice a piece with ≡ 28-32 26.37x17 11x22.
After 22-28?! 41.36-31! 28x37 42.31x42 black had to lose a piece, since 15-20? loses after 43.39-33! 20-24 44.40-34! 29x40 45.45x34 and 24-30? fails due to 46.26-21 30x28 47.21x3 W+ But Zhou was not impressed, and played ≡ 16-21! 43.39-33 21-27 44.33x24 23-28! It turns out that black has enough positional compensation for the lost piece to make a draw. 45.40-34 8-13 46.45-40 17-22 47.40-35 13-18 48.34-30 28-32 49.24-20 32x43 50.20x9 43-49 51.9-3 49-32 52.30-24 32-5 53.3-8 18-23? This move is inaccurate. 54.8-12 23-28 55.12-45? Here white missed a great opportunity with ≡ 55.42-38! Then 28-32? is not possible due to the unexpected 56.12-21!! 27x16 57.38x18 and white wins due to his perfectly positioned pieces. If black plays with his king, then white has time to attack the black pieces, for example ≡ 5-14? 56.12-7! 14-3 57.7-11 3-17 58.11-16 W+ Black can only just make a draw with ≡ 28-33! 56.38x29 27-32! 57.12-21 22-27! (and not ≡ 32-37? due to 58.21-16!) ≡ 28-32 56.45-50 32-37 57.42x31 27x36 58.50x6 36-41 59.26-21 41-46 60.21-17 46-19
After 33.34-29 NDiaye replied with the remarkable move 25-30!? 34.29x20 15x24 Now 35.40-34? fails due to 12-17 36.34x25 24-29 37.33x24 19x30 38.35x24 18-22 39.27x18 13x31 B+ And ≡ 35.28-22 10-15 36.32-28! (and certainly not ≡ 36.33-28? because of 6-11! 37.39-33 or? 24-29! 38.35x24 19x30 39.33x35 16-21 40.27x7 18x27 41.32x21 26x17 42.7x18 13x31 B+) ≡ 24-29! 37.35x24 29x20 leads to an equal position. Therefore Schwarzman took the exchange ≡ 35.37-31! 26x37 36.32x41 10-15 37.27-22 18x27 38.28-23 19x28 39.33x31 15-20? Here black should have played ≡ 14-20 with a better position for white. ≡ 40.38-33! Now black loses a piece and the game. 20-25 41.33-29 24x33 42.35x24 14-19 43.39x28 19x30 44.40-35 9-14 45.35x24 14-19 46.44-40! 19x30 47.40-35 30-34 48.35-30 34-39 49.43x34 13-19 50.31-27 12-17 51.41-37 17-21 52.37-32 21-26 53.28-22 6-11 54.32-28 11-17 55.22x11 16x7 56.28-22 19-23 57.30-24 7-11 58.22-18 23x12 59.24-19 12-18 60.19-14 18-22 61.27x18 26-31 62.14-10 31-37 63.10-5 37-42 64.18-13 42-47 65.13-8 11-16 66.8-2 47-36 67.2-24 36-27 68.24-8 27-38 69.8-35 38-33 70.5-41 16-21 71.41-47 33-50 72.47-38 21-26 73.38-42
It seemed like both players were sleeping after 38.36-31?? Now Thijssen could win using the simple combination 18-23 39.29x16 20x36 B+ ≡ 3-8? 39.24-19! Silva grabs his chance to develop his ugly right wing. 9-14 40.19x10 15x4 41.28-23 8-12 42.23-19 5-10 43.43-38 10-15 44.29-23 18x29 45.33x24 20x29 46.34x23 4-9 47.38-33 2-7 48.33-28 22x33 49.35-30 25x34 50.40x38 17-22 51.38-33 21-27
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