Category Archives: Groningen 2012

Groningen 2012 Rd9-GM Hansen,E

Here is GM Hansen’s clutch rd9 Groningen win with a sharp Grunfeld.

Michalik,P (2508) – Hansen,Eric (2539)
Grunfeld Russian System 7…Nc6[D97]
Groningen Open A Groningen NED (9.4), 30.12.2012

Position 1
Black has a pawn and the queenside majority as compensation for the exchange. How should black respond to the 39.a3 challenge?

Black to Play

39.a3
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Groningen 2012 Final Standings

Final Standings
GM Andriasian, Zaven(ARM) and GM Kovchan, Alexander(UKR) shared first with 7/9. GM Hansen,E(CAN) shared 2nd with 6.5/9 winning his last 2 games.
Piasetski,L(CAN) finished with 4/9. Lyell(ENG) got 4.5/9.

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Rank Name Score Fed. M/F Rating TPR W-We 8 9
1 GM Andriasian, Zaven 7 ARM M 2605 2679 0.83 ½ ½
2 GM Kovchan, Alexander 7 UKR M 2579 2666 0.96 ½ 1
3 GM Ernst, Sipke 7 NED M 2562 2690 1.44 ½ 1
4 GM Kampen van, Robin 6.5 NED M 2570 2617 0.74 1 ½
5 IM Pancevski, Filip 6.5 MKD M 2512 2582 0.78 0 +
6 IM Hansen, Eric 6.5 CAN M 2539 2497 -0.33 1 1
7 GM Michalik, Peter 6 SVK M 2508 2592 1.06 ½ 0
8 GM Gormally, Daniel W 6 ENG M 2495 2524 0.52 1 0
9 IM Hovhanisian, Mher 6 ARM M 2477 2526 0.71 ½ ½
10 IM Bok, Benjamin 6 NED M 2522 2547 0.36 ½ ½
11 IM Das, Arghyadip 6 IND M 2476 2506 0.5 ½ ½
12 IM Hausrath, Daniel 6 GER M 2483 2526 0.6 ½ ½
13 IM Roy Chowdhury, Saptarshi 6 IND M 2441 2533 1.22 0 1
14 GM Barua, Dibyendu 6 IND M 2410 2538 1.56 0 1
15 GM Deviatkin, Andrei 6 RUS M 2569 2495 -0.59 1 0
16 FM Drozdowski, Kacper 6 POL M 2426 2475 0.61 1 ½
17 IM Donchenko, Alexander 6 GER M 2401 2390 0.01 1 1
18 IM Matnadze, Ana 6 ESP F 2401 2397 0.12 1 1
19 IM Naroditsky, Daniel 5.5 USA M 2483 2459 -0.15 1 ½
20 IM Breder, Dennis 5.5 GER M 2438 2466 0.41 1
21 Maris, Ivo 5.5 NED M 2086 2472 4.14 ½ 1
22 FM Schoorl, Rob 5.5 NED M 2366 2361 0.07 1 ½
23 GM Brunello, Sabino 5.5 ITA M 2583 2402 -1.79 1 ½
24 IM Pacher, Milan 5.5 SVK M 2436 2347 -0.92 0 1
25 Majhi, Ankit 5.5 NED M 1984 2263 2.78 1 1

Groningen 2012 Rd8(Partial Standings)

Rd8 Standings
GM Andriasian, Zaven reamains at the top with 6.5/8. GM Hansen,E(CAN) won and has 5.5/8. IM Piasetski(CAN) stays at 3/8. Budapest resident FM Lyell, Mark(ENG) has 3.5/8.

 FM Lyell, Mark(ENG)


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Rank Name Score Fed. Rating 7 8
1 GM Andriasian, Zaven 6.5 ARM 2605 1 ½
2 GM Kovchan, Alexander 6 UKR 2579 ½ ½
3 GM Kampen van, Robin 6 NED 2570 ½ 1
4 GM Deviatkin, Andrei 6 RUS 2569 ½ 1
5 GM Ernst, Sipke 6 NED 2562 ½ ½
6 GM Michalik, Peter 6 SVK 2508 ½ ½
7 GM Gormally, Daniel W 6 ENG 2495 1 1
8 IM Hansen, Eric 5.5 CAN 2539 ½ 1
9 IM Bok, Benjamin 5.5 NED 2522 0 ½
10 IM Pancevski, Filip 5.5 MKD 2512 ½ 0
11 IM Hausrath, Daniel 5.5 GER 2483 1 ½
12 IM Hovhanisian, Mher 5.5 ARM 2477 1 ½
13 IM Das, Arghyadip 5.5 IND 2476 1 ½
14 IM Breder, Dennis 5.5 GER 2438 ½ 1
15 FM Drozdowski, Kacper 5.5 POL 2426 1 1
16 GM Brunello, Sabino 5 ITA 2583 ½ 1
17 IM Naroditsky, Daniel 5 USA 2483 1 1
18 IM Roy Chowdhury, Saptarshi 5 IND 2441 1 0
19 GM Barua, Dibyendu 5 IND 2410 1 0
20 IM Donchenko, Alexander 5 GER 2401 0 1
21 IM Matnadze, Ana 5 ESP 2401 ½ 1
22 IM Arslanov, Shamil 5 RUS 2386 ½ 1
23 FM Schoorl, Rob 5 NED 2366 1 1
24 WGM Mammadova, Gulnar 5 AZE 2363 ½ 1
25 Overdam van, Julian 5 NED 2268 1 0
26 FM Beukema, Stefan 5 BEL 2262 0 1
27 IM Plat, Vojtech 4.5 CZE 2483 0 ½
28 IM Pacher, Milan 4.5 SVK 2436 1 0
29 IM Wallace, John Paul 4.5 AUS 2398 1 0
30 IM Baghdasaryan, Vahe 4.5 ARM 2388 0 ½
31 IM Estremera Panos, Sergio 4.5 ESP 2367 1 1
32 FM Eggleston, David 4.5 ENG 2352 1 ½
33 FM Pel, Bonno 4.5 NED 2288 0 1
34 Mostertman, Milan 4.5 NED 2250 0 1
35 Maatman, Nick 4.5 NED 2167 ½ ½
36 Maris, Ivo 4.5 NED 2086 1 ½
37 Majhi, Ankit 4.5 NED 1984 1 1
38 IM Burg, Twan 4 NED 2498 0 0
39 IM Nestorovic, Nikola 4 SRB 2429 1 0
40 IM Assendelft van, Floris 4 NED 2403 ½ 1
41 FM Goudriaan, Etienne 4 NED 2366 ½ 1
42 IM Berkovich, Mark 4 ISR 2359 1 0
43 Pijpers, Arthur 4 NED 2351 0 0
44 IM Afek, Yochanan 4 ISR 2311 0 ½
45 Ben Artzi, Ido 4 ISR 2297 1 0
46 WGM Calzetta Ruiz, Monica 4 ESP 2286 1 1
47 WGM Mamedjarova, Turkan 4 AZE 2277 ½ 0
48 WIM Umudova, Nargiz 4 AZE 2220 1 1
49 FM Vogel, Jaap 4 NED 2166 0 1
50 Overdam van, Jan 4 NED 2157 0 1
51 Jacobs, Florian 4 NED 2151 ½ 1
52 Basencyan, Mark 4 ARM 2112 1 0
53 Dehn, Marcus 4 GER 2105 0 0
54 Osch van, Mees 4 NED 2090 0 1
55 Henseler, Jorgen 4 NED 2076 ½ 1
56 IM Jong de, Migchiel 3.5 NED 2372 ½ 0
57 FM Heemskerk, Wim 3.5 NED 2253 ½ 0
58 Kuling, Lody 3.5 NED 2246 0 1
59 Kerigan, Demre 3.5 TUR 2233 ½ 0
60 FM Lyell, Mark 3.5 ENG 2226 ½ ½
61 Bosker, Peter 3.5 NED 2170 0 0
62 Brookes, Christopher 3.5 NED 2163 1 1
63 Ypma, Peter 3.5 NED 2157 ½ 0
64 WFM Grigoryan, Meri 3.5 ENG 2025 1 ½
65 IJzermans, Gijs 3.5 NED 1966 1
66 IM Piasetski, Leon 3 CAN 2310 0 0
67 FM Duijker, Rick 3 NED 2242 0 0
68 Ruiter de, Danny 3 NED 2226 0 ½
69 Go, Benjamin 3 NED 2168 1 0
70 Lee, Kai Jie Edward 3 SIN 2165 0 0
71 Knol, Geon 3 NED 2160 ½ 1
72 Schoehuijs, Erik 3 NED 2160 0 0
73 Meijenfeldt von, Bart 3 NED 2155 1 0
74 Sparenberg, Erik 3 NED 2114 ½ 1
75 CM Theulings, Paul-Peter 3 NED 2105 0 ½
76 WIM Dhar-Barua, Saheli 3 IND 2091 1 0
77 Dijkhuis, Tycho 3 NED 2062 0 1
78 Vereggen, Lars 3 NED 2059 1 1
79 Foreest van, Lucas 3 NED 2003 0 1

Groningen 2012 Rd7 Standings(Partial)

Standings
GM Andriasian, Zaven(ARM) takes the sole lead with 6/7. Hansen drew and has 4.5/7. Piasetski remains with 3/7.

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Rank Name Score Fed. M/F Rating 6 7
1 GM Andriasian, Zaven 6 ARM M 2605 1 1
2 GM Kovchan, Alexander 5.5 UKR M 2579 1 ½
3 GM Ernst, Sipke 5.5 NED M 2562 1 ½
4 IM Pancevski, Filip 5.5 MKD M 2512 1 ½
5 GM Michalik, Peter 5.5 SVK M 2508 1 ½
6 GM Kampen van, Robin 5 NED M 2570 0 ½
7 GM Deviatkin, Andrei 5 RUS M 2569 1 ½
8 IM Bok, Benjamin 5 NED M 2522 1 0
9 GM Gormally, Daniel W 5 ENG M 2495 0 1
10 IM Hausrath, Daniel 5 GER M 2483 ½ 1
11 IM Hovhanisian, Mher 5 ARM M 2477 0 1
12 IM Das, Arghyadip 5 IND M 2476 1 1
13 IM Roy Chowdhury, Saptarshi 5 IND M 2441 0 1
14 GM Barua, Dibyendu 5 IND M 2410 0 1
15 Overdam van, Julian 5 NED M 2268 1 1
16 IM Hansen, Eric 4.5 CAN M 2539 1 ½
17 IM Breder, Dennis 4.5 GER M 2438 ½ ½
18 IM Pacher, Milan 4.5 SVK M 2436 ½ 1
19 FM Drozdowski, Kacper 4.5 POL M 2426 ½ 1
20 IM Wallace, John Paul 4.5 AUS M 2398 0 1
21 GM Brunello, Sabino 4 ITA M 2583 ½ ½
22 IM Burg, Twan 4 NED M 2498 0 0
23 IM Naroditsky, Daniel 4 USA M 2483 0 1
24 IM Plat, Vojtech 4 CZE M 2483 1 0
25 IM Nestorovic, Nikola 4 SRB M 2429 0 1
26 IM Donchenko, Alexander 4 GER M 2401 1 0
27 IM Matnadze, Ana 4 ESP F 2401 ½ ½
28 IM Baghdasaryan, Vahe 4 ARM M 2388 1 0
29 IM Arslanov, Shamil 4 RUS M 2386 1 ½
30 FM Schoorl, Rob 4 NED M 2366 0 1
31 WGM Mammadova, Gulnar 4 AZE F 2363 1 ½
32 IM Berkovich, Mark 4 ISR M 2359 0 1
33 FM Eggleston, David 4 ENG M 2352 ½ 1
34 Pijpers, Arthur 4 NED M 2351 1 0
35 Ben Artzi, Ido 4 ISR M 2297 0 1
36 WGM Mamedjarova, Turkan 4 AZE F 2277 ½ ½
37 FM Beukema, Stefan 4 BEL M 2262 ½ 0
38 Maatman, Nick 4 NED M 2167 ½ ½
39 Basencyan, Mark 4 ARM M 2112 1 1
40 Dehn, Marcus 4 GER M 2105 1 0
41 Maris, Ivo 4 NED M 2086 0 1
42 IM Jong de, Migchiel 3.5 NED M 2372 1 ½
43 IM Estremera Panos, Sergio 3.5 ESP M 2367 0 1
44 IM Afek, Yochanan 3.5 ISR M 2311 1 0
45 FM Pel, Bonno 3.5 NED M 2288 1 0
46 FM Heemskerk, Wim 3.5 NED M 2253 1 ½
47 Mostertman, Milan 3.5 NED M 2250 1 0
48 Kerigan, Demre 3.5 TUR M 2233 1 ½
49 Bosker, Peter 3.5 NED M 2170 ½ 0
50 Ypma, Peter 3.5 NED M 2157 1 ½
51 Majhi, Ankit 3.5 NED M 1984 ½ 1
52 IJzermans, Gijs 3.5 NED M 1966 1 1
53 IM Assendelft van, Floris 3 NED M 2403 0 ½
54 FM Goudriaan, Etienne 3 NED M 2366 0 ½
55 IM Piasetski, Leon 3 CAN M 2310 0 0
56 WGM Calzetta Ruiz, Monica 3 ESP F 2286 0 1
57 FM Duijker, Rick 3 NED M 2242 1 0
58 FM Lyell, Mark 3 ENG M 2226 ½ ½
59 WIM Umudova, Nargiz 3 AZE F 2220 ½ 1
60 Go, Benjamin 3 NED M 2168 0 1
61 FM Vogel, Jaap 3 NED M 2166 1 0
62 Lee, Kai Jie Edward 3 SIN M 2165 0 0
63 Schoehuijs, Erik 3 NED M 2160 ½ 0
64 Overdam van, Jan 3 NED M 2157 1 0
65 Meijenfeldt von, Bart 3 NED M 2155 0 1
66 Jacobs, Florian 3 NED M 2151 1 ½
67 WIM Dhar-Barua, Saheli 3 IND F 2091 0 1
68 Osch van, Mees 3 NED M 2090 1 0
69 Henseler, Jorgen 3 NED M 2076 0 ½
70 WFM Grigoryan, Meri 3 ENG F 2025 1 1
71 Senders, Mischa 3 NED M 1967 1 ½

Groningen 2012 Rd6 (Partial) Standings

Rd6 Standings
There’s a 6-way tie for first with 5/6. GM Hansen,E moves up to 4/6. IM Piasetski stays at 3/6.

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Rank Name Score Fed. M/F Rating 5 6
1 GM Andriasian, Zaven 5 ARM M 2605 ½ 1
2 GM Kovchan, Alexander 5 UKR M 2579 1 1
3 GM Ernst, Sipke 5 NED M 2562 1 1
4 IM Bok, Benjamin 5 NED M 2522 1 1
5 IM Pancevski, Filip 5 MKD M 2512 1 1
6 GM Michalik, Peter 5 SVK M 2508 0 1
7 GM Kampen van, Robin 4.5 NED M 2570 1 0
8 GM Deviatkin, Andrei 4.5 RUS M 2569 1 1
9 IM Hansen, Eric 4 CAN M 2539 ½ 1
10 IM Burg, Twan 4 NED M 2498 1 0
11 GM Gormally, Daniel W 4 ENG M 2495 1 0
12 IM Hausrath, Daniel 4 GER M 2483 1 ½
13 IM Plat, Vojtech 4 CZE M 2483 ½ 1
14 IM Hovhanisian, Mher 4 ARM M 2477 1 0
15 IM Das, Arghyadip 4 IND M 2476 0 1
16 IM Roy Chowdhury, Saptarshi 4 IND M 2441 ½ 0
17 IM Breder, Dennis 4 GER M 2438 1 ½
18 GM Barua, Dibyendu 4 IND M 2410 1 0
19 IM Donchenko, Alexander 4 GER M 2401 1 1
20 IM Baghdasaryan, Vahe 4 ARM M 2388 ½ 1
21 Pijpers, Arthur 4 NED M 2351 1 1
22 Overdam van, Julian 4 NED M 2268 1 1
23 FM Beukema, Stefan 4 BEL M 2262 1 ½
24 Dehn, Marcus 4 GER M 2105 1 1
25 GM Brunello, Sabino 3.5 ITA M 2583 1 ½
26 IM Pacher, Milan 3.5 SVK M 2436 ½ ½
27 FM Drozdowski, Kacper 3.5 POL M 2426 0 ½
28 IM Matnadze, Ana 3.5 ESP F 2401 0 ½
29 IM Wallace, John Paul 3.5 AUS M 2398 1 0
30 IM Arslanov, Shamil 3.5 RUS M 2386 0 1
31 WGM Mammadova, Gulnar 3.5 AZE F 2363 0 1
32 IM Afek, Yochanan 3.5 ISR M 2311 ½ 1
33 FM Pel, Bonno 3.5 NED M 2288 ½ 1
34 WGM Mamedjarova, Turkan 3.5 AZE F 2277 ½ ½
35 Mostertman, Milan 3.5 NED M 2250 1 1
36 Bosker, Peter 3.5 NED M 2170 ½ ½
37 Maatman, Nick 3.5 NED M 2167 0 ½
38 IM Naroditsky, Daniel 3 USA M 2483 0 0
39 IM Nestorovic, Nikola 3 SRB M 2429 0 0
40 IM Jong de, Migchiel 3 NED M 2372 1 1
41 FM Schoorl, Rob 3 NED M 2366 ½ 0
42 IM Berkovich, Mark 3 ISR M 2359 ½ 0
43 FM Eggleston, David 3 ENG M 2352 0 ½
44 IM Piasetski, Leon 3 CAN M 2310 0 0
45 Ben Artzi, Ido 3 ISR M 2297 1 0
46 FM Heemskerk, Wim 3 NED M 2253 ½ 1
47 FM Duijker, Rick 3 NED M 2242 1 1
48 Kerigan, Demre 3 TUR M 2233 0 1
49 FM Vogel, Jaap 3 NED M 2166 ½ 1
50 Lee, Kai Jie Edward 3 SIN M 2165 ½ 0
51 Schoehuijs, Erik 3 NED M 2160 ½ ½
52 Overdam van, Jan 3 NED M 2157 ½ 1
53 Ypma, Peter 3 NED M 2157 0 1
54 Basencyan, Mark 3 ARM M 2112 0 1
55 Osch van, Mees 3 NED M 2090 ½ 1
56 Maris, Ivo 3 NED M 2086 0 0

Groningen 2012 Rd5 Partial Standings

Standings(Partial)
GM Kampen van, Robin(NED) takes the sole lead with 4.5/5. GM Hansen,E(CAN) drew and IM Piasetski(CAN) lost and both have 3/5.

GM Kampen van, Robin

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Rank Name Score Fed. M/F Rating TPR W-We 1 2 3 4 5
1 GM Kampen van, Robin 4.5 NED M 2570 2728 0.78 ½ 1 1 1 1
2 GM Andriasian, Zaven 4 ARM M 2605 2651 0.29 1 1 ½ 1 ½
3 GM Kovchan, Alexander 4 UKR M 2579 2641 0.39 1 1 ½ ½ 1
4 GM Ernst, Sipke 4 NED M 2562 2639 0.47 1 1 ½ ½ 1
5 IM Bok, Benjamin 4 NED M 2522 2597 0.46 1 1 ½ ½ 1
6 IM Pancevski, Filip 4 MKD M 2512 2619 0.65 1 1 ½ ½ 1
7 GM Michalik, Peter 4 SVK M 2508 2654 0.92 1 1 1 1 0
8 IM Burg, Twan 4 NED M 2498 2545 0.38 1 1 1 0 1
9 GM Gormally, Daniel W 4 ENG M 2495 2571 0.59 1 1 1 0 1
10 IM Hovhanisian, Mher 4 ARM M 2477 2578 0.7 1 1 ½ ½ 1
11 IM Roy Chowdhury, Saptarshi 4 IND M 2441 2661 1.41 1 1 ½ 1 ½
12 GM Barua, Dibyendu 4 IND M 2410 2595 1.17 ½ 1 1 ½ 1
13 GM Deviatkin, Andrei 3.5 RUS M 2569 2427 -0.64 ½ 1 1 0 1
14 IM Hausrath, Daniel 3.5 GER M 2483 2542 0.47 1 1 ½ 0 1
15 IM Breder, Dennis 3.5 GER M 2438 2364 -0.36 0 ½ 1 1 1
16 IM Wallace, John Paul 3.5 AUS M 2398 2402 0.19 1 ½ 1 0 1
17 FM Beukema, Stefan 3.5 BEL M 2262 2446 1.19 0 1 1 ½ 1
18 GM Brunello, Sabino 3 ITA M 2583 2346 -1.26 0 1 1 0 1
19 IM Hansen, Eric 3 CAN M 2539 2352 -1.08 ½ ½ 1 ½ ½
20 IM Naroditsky, Daniel 3 USA M 2483 2484 0.09 1 1 ½ ½ 0
21 IM Plat, Vojtech 3 CZE M 2483 2293 -1.05 0 1 ½ 1 ½
22 IM Das, Arghyadip 3 IND M 2476 2454 -0.01 1 1 ½ ½ 0
23 IM Pacher, Milan 3 SVK M 2436 2313 -0.72 ½ 1 0 1 ½
24 IM Nestorovic, Nikola 3 SRB M 2429 2409 -0.05 1 1 0 1 0
25 FM Drozdowski, Kacper 3 POL M 2426 2397 -0.14 ½ ½ 1 1 0
26 IM Donchenko, Alexander 3 GER M 2401 2319 -0.44 ½ 1 0 ½ 1
27 IM Matnadze, Ana 3 ESP F 2401 2351 -0.16 1 1 0 1 0
28 IM Baghdasaryan, Vahe 3 ARM M 2388 2259 -0.68 1 1 0 ½ ½
29 FM Schoorl, Rob 3 NED M 2366 2384 0.18 1 0 ½ 1 ½
30 IM Berkovich, Mark 3 ISR M 2359 2263 -0.52 ½ ½ ½ 1 ½
31 Pijpers, Arthur 3 NED M 2351 2264 -0.47 1 0 1 0 1
32 IM Piasetski, Leon 3 CAN M 2310 2415 0.72 1 0 1 1 0
33 Ben Artzi, Ido 3 ISR M 2297 2280 0 1 0 1 0 1
34 WGM Mamedjarova, Turkan 3 AZE F 2277 2147 -0.65 0 1 ½ 1 ½
35 Overdam van, Julian 3 NED M 2268 2239 -0.03 1 0 1 0 1
36 Bosker, Peter 3 NED M 2170 2405 1.49 0 1 1 ½ ½
37 Maatman, Nick 3 NED M 2167 2404 1.49 0 1 1 1 0
38 Lee, Kai Jie Edward 3 SIN M 2165 2377 1.36 0 1 ½ 1 ½
39 Dehn, Marcus 3 GER M 2105 2333 1.46 0 0 1 1 1
40 Maris, Ivo 3 NED M 2086 2491 2.37 1 1 0 1 0
41 IM Assendelft van, Floris 2.5 NED M 2403 2120 -1.66 1 0 ½ 0 1
42 IM Arslanov, Shamil 2.5 RUS M 2386 2255 -0.81 ½ 1 0 1 0
43 IM Estremera Panos, Sergio 2.5 ESP M 2367 2245 -0.77 0 1 ½ 1 0
44 FM Goudriaan, Etienne 2.5 NED M 2366 2215 -0.92 1 0 0 ½ 1
45 WGM Mammadova, Gulnar 2.5 AZE F 2363 2284 -0.47 1 0 1 ½ 0
46 FM Eggleston, David 2.5 ENG M 2352 2260 -0.55 1 0 ½ 1 0
47 IM Afek, Yochanan 2.5 ISR M 2311 2195 -0.75 1 0 1 0 ½
48 FM Schiffer, Kai Uwe 2.5 GER M 2300 2306 0.06 1 0 1 ½ 0
49 FM Pel, Bonno 2.5 NED M 2288 2058 -1.38 0 ½ 1 ½ ½
50 Mostertman, Milan 2.5 NED M 2250 2415 1.01 ½ ½ ½ 0 1
51 Ruiter de, Danny 2.5 NED M 2226 2293 0.4 0 1 ½ 0 1
52 Schoehuijs, Erik 2.5 NED M 2160 2298 0.85 1 0 0 1 ½
53 Henseler, Jorgen 2.5 NED M 2076 2252 1.12 0 ½ ½ ½ 1

Groningen 2012 Rd3 GM Hansen,E(CAN)

Here is GM Hansen,E’s rd3 win against Brunello,M.

Brunello,Marina

  

Brunello,Marina(2257)-Hansen,Eric(2539)
Sicilian Bind[B38]
SFG 2012 Groningen(3),23.12.2012

Position 1
White has completed development but black is theatening …a3 to undermine Nc3. How should white respond?

White to Play

20…Qa5

Position 2
Black has the advantage with two pawns and a useful knight for the exchange and a passed b-pawn. The only question remaining is what the most precise path is. How should black convert the extra exchange?

Black to Play

37.Qg5

Groningen 2012 Rd3

Here is the rd3 game of GM Michalik,Peter in a topical line of the Benko Gambit.

Michalik,Peter and team at the 2012 Olympiad

Michalik,Peter(2508)-Nestorovic,Nikola(2429)
Benko g3 12.a4[A58]
SFG 2012 Groningen(3),23.12.2012

Position 1
White is trying to convert his two pawn advantage. What is the best way?

White to Play

28…Qb8

Groningen 2012 Rd4 Standings(Partial)

Standings Rd4 Schaakstadgroningen Festival 2012
GM Michalik, Peter takes the sole lead with the only perfect score at 4-0. IM Piasetski has 3/4. GM Hansen,E has 2.5/4.

GM Michalik, Peter  is in the background playing Polgar,Jtable.tableizer-table { border: 1px solid #CCC; font-family: Arial, Helvetica, sans-serif; font-size: 12px; } .tableizer-table td { padding: 4px; margin: 3px; border: 1px solid #ccc; } .tableizer-table th { background-color: #104E8B; color: #FFF; font-weight: bold; }

IM Matnadze, Ana has 3/4

Rank Name Score Fed. M/F Rating TPR W-We 1 2 3 4
1 GM Michalik, Peter 4 SVK M 2508 3175 1.33 1 1 1 1
2 GM Andriasian, Zaven 3.5 ARM M 2605 2739 0.51 1 1 ½ 1
3 GM Kampen van, Robin 3.5 NED M 2570 2662 0.37 ½ 1 1 1
4 IM Roy Chowdhury, Saptarshi 3.5 IND M 2441 2711 1.19 1 1 ½ 1
5 GM Kovchan, Alexander 3 UKR M 2579 2588 0.09 1 1 ½ ½
6 GM Ernst, Sipke 3 NED M 2562 2585 0.15 1 1 ½ ½
7 IM Bok, Benjamin 3 NED M 2522 2562 0.23 1 1 ½ ½
8 IM Pancevski, Filip 3 MKD M 2512 2567 0.3 1 1 ½ ½
9 IM Burg, Twan 3 NED M 2498 2550 0.3 1 1 1 0
10 GM Gormally, Daniel W 3 ENG M 2495 2488 0.12 1 1 1 0
11 IM Naroditsky, Daniel 3 USA M 2483 2605 0.69 1 1 ½ ½
12 IM Hovhanisian, Mher 3 ARM M 2477 2574 0.56 1 1 ½ ½
13 IM Das, Arghyadip 3 IND M 2476 2546 0.46 1 1 ½ ½
14 IM Nestorovic, Nikola 3 SRB M 2429 2474 0.27 1 1 0 1
15 FM Drozdowski, Kacper 3 POL M 2426 2454 0.16 ½ ½ 1 1
16 GM Barua, Dibyendu 3 IND M 2410 2517 0.57 ½ 1 1 ½
17 IM Matnadze, Ana 3 ESP F 2401 2413 0.19 1 1 0 1
18 IM Piasetski, Leon 3 CAN M 2310 2492 0.95 1 0 1 1
19 Maatman, Nick 3 NED M 2167 2489 1.63 0 1 1 1
20 Maris, Ivo 3 NED M 2086 2595 2.45 1 1 0 1
21 GM Deviatkin, Andrei 2.5 RUS M 2569 2351 -0.88 ½ 1 1 0
22 IM Hansen, Eric 2.5 CAN M 2539 2354 -0.85 ½ ½ 1 ½
23 IM Hausrath, Daniel 2.5 GER M 2483 2495 0.13 1 1 ½ 0
24 IM Plat, Vojtech 2.5 CZE M 2483 2281 -0.88 0 1 ½ 1
25 IM Breder, Dennis 2.5 GER M 2438 2276 -0.74 0 ½ 1 1
26 IM Pacher, Milan 2.5 SVK M 2436 2328 -0.51 ½ 1 0 1
27 IM Wallace, John Paul 2.5 AUS M 2398 2336 -0.18 1 ½ 1 0
28 IM Baghdasaryan, Vahe 2.5 ARM M 2388 2286 -0.4 1 1 0 ½
29 IM Arslanov, Shamil 2.5 RUS M 2386 2349 -0.14 ½ 1 0 1
30 IM Estremera Panos, Sergio 2.5 ESP M 2367 2259 -0.53 0 1 ½ 1
31 FM Schoorl, Rob 2.5 NED M 2366 2350 -0.05 1 0 ½ 1
32 WGM Mammadova, Gulnar 2.5 AZE F 2363 2329 -0.13 1 0 1 ½
33 IM Berkovich, Mark 2.5 ISR M 2359 2214 -0.69 ½ ½ ½ 1
34 FM Eggleston, David 2.5 ENG M 2352 2311 -0.17 1 0 ½ 1
35 FM Schiffer, Kai Uwe 2.5 GER M 2300 2378 0.43 1 0 1 ½
36 WGM Mamedjarova, Turkan 2.5 AZE F 2277 2080 -0.86 0 1 ½ 1
37 FM Beukema, Stefan 2.5 BEL M 2262 2370 0.52 0 1 1 ½
38 Bosker, Peter 2.5 NED M 2170 2415 1.21 0 1 1 ½
39 Lee, Kai Jie Edward 2.5 SIN M 2165 2399 1.16 0 1 ½ 1
40 GM Brunello, Sabino 2 ITA M 2583 2284 -1.37 0 1 1 0
41 IM Donchenko, Alexander 2 GER M 2401 2267 -0.65 ½ 1 0 ½
42 Pijpers, Arthur 2 NED M 2351 2201 -0.72 1 0 1 0
43 IM Afek, Yochanan 2 ISR M 2311 2202 -0.55 1 0 1 0
44 Ben Artzi, Ido 2 ISR M 2297 2232 -0.26 1 0 1 0
45 FM Pel, Bonno 2 NED M 2288 2033 -1.21 0 ½ 1 ½
46 Overdam van, Julian 2 NED M 2268 2186 -0.3 1 0 1 0
47 WIM Brunello, Marina 2 ITA F 2257 2410 0.71 1 0 0 1
48 Kerigan, Demre 2 TUR M 2233 2329 0.49 ½ 0 1 ½
49 Go, Benjamin 2 NED M 2168 2218 0.19 0 1 0 1
50 Schoehuijs, Erik 2 NED M 2160 2301 0.68 1 0 0 1
51 Ypma, Peter 2 NED M 2157 2203 0.2 0 0 1 1
52 Basencyan, Mark 2 ARM M 2112 2235 0.6 0 1 0 1
53 Dehn, Marcus 2 GER M 2105 2262 0.76 0 0 1 1
54 WIM Dhar-Barua, Saheli 2 IND F 2091 2324 1.16 ½ ½ 0 1

Here is a tough round 3 battle with IM Matnadze,Ana

Matnadze,Ana(2401)-Burg,Twan(2498)
QP g3 vs. Slav[D02]
SFG 2012 Groningen (3), 23.12.2012

Groningen 2012 Rd2 Hansen,E(CAN)

Here is Hansen’s rd2 game against Kuling,Lody(2246).

Kuling,Lody(NED)
Photo-Chessdb

White avoided premature simplification but soon ended up in difficulties.

Hansen,Eric(2539)-Kuling,Lody(2246)
Sicilian 3.Bb5+ Bd7[B52]
SFG 2012 Groningen (2), 12.05.2012

Position 1
The misplaced Na7 leaves white in big trouble. How should black exploit this factor? 

Black to Play

22.Qb6