Seaport Masters 2012 round 9

Kroesbergen was already under heavy pressure, but after 40.39-33? it all went very fast: 17-22! Now after 41.41-37? black replies with the attack 21-27! 42.32x21 16x27 43.44-39 19-23! 44.29-24 23-29! 45.24-20 29x38 46.42x33 27-31 47.36x27 22x42 48.47x38 26-31 with a winning break through. Also ≡ 41.42-38? doesn't help because of 19-23! 42.29-24 21-27 43.32x21 16x27 B+ And finally ≡ 41.44-39? is hopeless too, for example 19-23! 42.39-34 22-28 43.33x22 18x38 44.29x18 13x22 45.42x33 22-28 46.33x22 21-27 47.22x31 26x46 B+ ≡ 41.42-37 21-27 Here ≡ 9-14! was even more effective. ≡ 42.32x21 16x27 43.37-32(?) 27x38 44.33x42 19-23! 45.44-40 45x34 46.29x40 22-27 47.50-44(?) The alternative ≡ 47.41-37 would also lose after 23-28! 48.42-38 18-23! etc. ≡ 4-10! and white resigned because of 48.15x4 13-19 49.4x31 26x48 B+

After 8-12? Shaibakov had a winning combination with 28.44-40! 35x44 29.32-27! 21x34 30.50x17 11x22 31.28x17 29x38 32.42x33 3-8

In this complicated position nothing was decided yet when NDiaye played 28.38-32? 12-18! 29.43-38 18x27 30.36-31 or? 27x47 31.25-20 14x25 32.28-22 17x28 33.32x1 Heusdens has looked deeper than his opponent and claims the victory using 47-41!! 34.30x8 41x2 35.26x17 11x22 36.1-23 2-24 37.23x5 24x47 38.5-32 47-24 39.32-43 6-11 40.49-44 11-16 41.43-34 22-27 42.44-39 27-31 43.34-23 31-36 44.23-14 24-13 45.39-33 13-24

Ron Heusdens noted that a very nice possibility was discovered during analysis of the game:

After 24.44-39? at first sight the 3x4 combination 13-18 25.22x13 17-21 26.26x17 11x31 27.36x27 looks quite innocent for white. But with the double sacrifice 12-18! 28.13x22 29-33 29.39x28 8-12!! black will win the game, because of the threat 12-18 22x13 19x8 30x19 14x21.

Borghetti had a bad day. After 32.41-36? Georgiev took both points using the combination 23-28! 33.32x14 13-18 34.22x2 12-18 35.2x30 25x41 36.14-10 41-46 37.10-4 11-17 38.4x11 6x17 39.35-30 46-19 40.30-25 19-24 41.31-26 3-9 42.48-43? 24-8 43.43-39 9-14 44.45-40 8-3 45.40-34 17-22 46.36-31 22-28 47.34-30 28-33

© Wieger Wesselink https://10x10.org