38. Sonnenterrassen Open 2025 Group B

Open SwissStandard

64 players participated in this 9-round tournament, held from 03 Aug 2025 to 10 Aug 2025 in Schwarzach, Austria. 1 titled players from 8 federations. Top 10 Elo average was 2002, and top seed was Christof Koellner (🇩🇪 GER, 2072).

Christof Koellner (🇩🇪 GER, 2072) won with 7.5/9, ahead of Stefan Calvi (7.5) and Maik Zesewitz (7.0). Koellner shared the lead from round 5, winning on tie-break.

The biggest upset came in round 9: Daniel Bodo (1592) beat Nurija Hasanovic (1960), a +368-point gap.

Location

🇦🇹Schwarzach, Austria

Dates

03 Aug 2025 → 10 Aug 2025

Time control

Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1

System

Swiss · 9 rounds

Top seed

🇩🇪Christof Koellner2072

Avg top 10

2,002

Participants

Titled players · 1

CM×1

Federations · 8 represented

🇦🇹Austria×32

🇩🇪Germany×20

🇭🇷Croatia×3

🇧🇦Bosnia and Herzegovina×2

🇸🇮Slovenia×2

🇨🇭Switzerland×1

🇮🇹Italy×1

🇭🇺Hungary×1

Top 3

🥇
Christof Koellner
🇩🇪GER·2072
7.5pts·2199perf+26.2
🥈
Stefan Calvi
🇩🇪GER·1959
7.5pts·2093perf+28.6
🥉
Maik Zesewitz
🇩🇪GER·1887
7.0pts·2072perf+43.0

How it unfolded

Top 6 · 9 rounds

Tight race until R6; 2 players tied at 7.5/9, decided on Buchholz.

Co-leaders

Koellner7.5Calvi7.5Zesewitz7Heigerer6.5Hammami6.5Mdivani6

R6 · LEADER CHANGE07 Aug

Christof Koellner takes the sole lead (5.5/6).

R9 · TIEBREAK CLUSTER

2 players finish on 7.5/9. Koellner takes the title on Buchholz Cut1 (47.5).

R8 · HEAD-TO-HEAD · WINNER VS 2ND

Christof Koellner drew with Stefan Calvi (Black).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Christof Koellner	*	½	—	1
2Stefan Calvi	½	*	1	—
3Maik Zesewitz	—	0	*	—
4Stefan Heigerer	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Koellner, Christof	2072	GER	+44N	=8B	+31N	+17B	+7N	+12B	+5B	=2N	=4B	7.5	47.5	51.0	41.00	2199	+26.2
2	Calvi, Stefan	1959	GER	+49N	+47B	−17N	+53B	+28N	+3B	+6N	=1B	+9B	7.5	42.5	45.0	36.25	2093	+28.6
3	Zesewitz, Maik	1887	GER	+43B	−18N	+36B	+23N	+40B	−2N	+21B	+20B	+12N	7.0	40.5	44.0	31.50	2072	+43.0
4	Hammami, Ahmad	1980	AUT	+16N	+30B	−6N	=28B	+35N	+7B	=12N	+17B	=1N	6.5	44.5	48.5	33.75	2034	+15.0
5	Heigerer, Stefan	1976	AUT	+64B	+29N	+27B	−6B	+17N	+9B	−1N	=12B	+13N	6.5	44.5	45.0	28.75	2045	+17.8
6	Mdivani, Maka	1864	ISR	+53N	+22B	+4B	+5N	−12N	+20B	−2B	−9N	+18B	6.0	47.0	49.5	30.50	2076	+51.2
7	Rudolph, Alexander	1915	GER	+48N	+23B	=18B	+11N	−1B	−4N	+29B	=10N	+24N	6.0	45.5	48.5	29.00	1984	+32.2
8	Hepp, Daniel	1907	GER	+25B	=1N	=10B	−21N	+48B	+15N	=27B	=18N	+22N	6.0	43.5	46.5	30.00	1965	+32.4
9	Matthias, Liam	1893	AUT	+54N	−12B	+48N	+42B	+10B	−5N	+25B	+6B	−2N	6.0	43.0	45.5	26.00	1964	+36.8
10	Hinteregger, ArthurCM	1988	AUT	=41N	+63B	=8N	+30B	−9N	=19N	+35B	=7B	+17N	6.0	40.0	41.0	24.75	1949	-8.4
11	Zesewitz, Martin	1919	GER	+39N	+42B	=12N	−7B	+26N	−18B	+41N	=23N	+19B	6.0	39.0	42.5	26.25	1917	+1.0
12	Siraj, Anej	2064	SLO	+46B	+9N	=11B	+18N	+6B	−1N	=4B	=5N	−3B	5.5	50.5	54.0	30.00	2014	-10.4
13	Zaynard, Andreas	1935	AUT	=24N	+32B	−28N	+15N	−19B	+53B	+30N	+27N	−5B	5.5	40.0	42.5	24.00	1832	-20.0
14	Szobries, Harald	1945	GER	+33B	=28N	=19B	−27N	=36B	−21N	+54B	+41N	+29B	5.5	35.5	38.0	21.75	1807	-29.0
15	Bodo, Daniel	1592	HUN	−27B	+64N	+41N	−13B	+37N	−8B	=45N	+30B	+40B	5.5	35.0	35.5	17.75	1922	+74.2
16	Zesewitz, Marco	1749	GER	−4B	+57N	+62B	−40N	−34B	=55N	+42B	+35N	+27B	5.5	31.0	32.5	16.75	1820	+16.0
17	Teubner, Elias	1817	AUT	+57B	+40N	+2B	−1N	−5B	+34N	+19B	−4N	−10B	5.0	47.0	49.0	22.50	1946	+31.4
18	Wersching, Alfred	2038	AUT	+37N	+3B	=7N	−12B	+27B	+11N	−20N	=8B	−6N	5.0	46.0	50.0	27.50	1947	-21.4
19	Broneder, Kurt	1853	AUT	=32N	+24B	=14N	=22B	+13N	=10B	−17N	+26B	−11N	5.0	43.0	47.5	26.00	1873	+4.6
20	Boller, Wolfgang	1988	AUT	+60B	−27N	+33B	+34N	+21B	−6N	+18B	−3N	F	5.0	41.5	43.5	21.00	1920	-12.6
21	Chen, Yan Xi	1659	AUT	=35N	=41B	+47N	+8B	−20N	+14B	−3N	−22B	+37N	5.0	40.0	43.5	22.75	1921	+117.2
22	Halilovic, Husein	1999	BIH	+51B	−6N	+26B	=19N	=29B	−25N	+44B	+21N	−8B	5.0	40.0	43.0	21.25	1779	-43.2
23	Donets, Alina	1616	AUT	+52B	−7N	+37N	−3B	=41N	+49B	+40N	=11B	F	5.0	38.0	41.0	18.25	1944	+130.8
24	Weber, Andreas	1721	GER	=13B	−19N	−43B	=51N	+61B	+38N	+34B	+25N	−7B	5.0	36.5	38.0	19.25	1865	+33.6
25	Riso, Giuseppe	1696	ITA	−8N	+59B	−30N	+47B	+45N	+22B	−9N	−24B	+57N	5.0	35.5	37.5	16.00	1858	+37.4
26	Magos, Christos	0	AUT	+59N	=31B	−22N	+44B	−11B	=50N	+56B	−19N	+36B	5.0	33.5	35.5	15.75	1862	0.0
27	Wagner, Samuel	1819	AUT	+15N	+20B	−5N	+14B	−18N	+28B	=8N	−13B	−16N	4.5	44.5	49.0	23.50	1863	+21.2
28	Juranovic, Igor	1637	CRO	+45N	=14B	+13B	=4N	−2B	−27N	+50B	−40N	=33B	4.5	41.0	44.0	20.25	1887	+102.2
29	Ljubic, Zvonomir	1700	CRO	+38N	−5B	=35N	+31B	=22N	=40B	−7N	+45B	−14N	4.5	39.0	42.5	18.25	1927	+102.8
30	Bauer, Werner	1840	GER	+55B	−4N	+25B	−10N	=42B	+43N	−13B	−15N	+44B	4.5	39.0	41.5	16.25	1768	-16.4
31	Brandauer, Martin	1934	AUT	+36B	=26N	−1B	−29N	−43B	=58N	+48B	=44N	+46B	4.5	34.5	36.5	15.75	1774	-28.0
32	Lainer, Johannes	1659	AUT	=19B	−13N	=61B	−50N	+46B	=33N	=36B	+38N	=34B	4.5	34.0	35.5	17.25	1818	+73.2
33	Schinwald, Florian	1735	AUT	−14N	+38B	−20N	−45B	+59N	=32B	+53N	=37B	=28N	4.5	33.5	35.5	15.00	1807	+33.2
34	Gall, Konrad	1845	AUT	−42N	+58B	+54N	−20B	+16N	−17B	−24N	+55B	=32N	4.5	33.5	35.5	14.75	1691	-66.4
35	Boehme, Sebastian	1853	GER	=21B	=50N	=29B	+43N	−4B	+36N	−10N	−16B	=39N	4.0	39.0	42.0	15.75	1730	-57.6
36	Prokscha, Charlotte	1711	GER	−31N	+45B	−3N	+38B	=14N	−35B	=32N	+49B	−26N	4.0	38.0	41.0	15.50	1848	+56.0
37	Broneder, Kurt	1772	AUT	−18B	+55N	−23B	+57N	−15B	=54N	+43B	=33N	−21B	4.0	33.5	35.5	11.50	1636	-32.4
38	Pihler, Damjan	1917	SLO	−29B	−33N	+60B	−36N	+39N	−24B	+59N	−32B	+48N	4.0	31.5	33.5	11.00	1681	-54.8
39	Hauer, Benno	1701	GER	−11B	+61N	−40B	=52N	−38B	−56N	+58B	+43N	=35B	4.0	28.5	30.0	10.50	1750	+16.4
40	Hasanovic, Nurija	1960	BIH	F	−17B	+39N	+16B	−3N	=29N	−23B	+28B	−15N	3.5	41.0	43.5	16.25	1669	-57.0
41	Kuttnig, Roland	1756	AUT	=10B	=21N	−15B	+62N	=23B	+42N	−11B	−14B	F	3.5	38.0	38.0	13.00	1662	-19.0
42	Perfler, Daniel	1630	AUT	+34B	−11N	+50B	−9N	=30N	−41B	−16N	F	+45B	3.5	36.5	38.5	13.25	1788	+61.2
43	Geworgyan, Derenick	1674	AUT	−3N	=44B	+24N	−35B	+31N	−30B	−37N	−39B	+58N	3.5	36.5	38.5	13.25	1671	-2.8
44	Mollenkopf, Thomas	1786	GER	−1B	=43N	+58B	−26N	=54B	+57N	−22N	=31B	−30N	3.5	34.5	36.5	9.25	1711	-15.0
45	Bieniok, Alfred	1846	GER	−28B	−36N	+64B	+33N	−25B	+48N	=15B	−29N	−42N	3.5	34.5	35.0	10.75	1602	-58.6
46	Poellner, Florian	1774	GER	−12N	−48B	=49N	=54B	−32N	=47B	+62N	+53B	−31N	3.5	29.0	30.5	8.50	1639	-30.2
47	Ascic, Matos	1799	CRO	+62B	−2N	−21B	−25N	−57B	=46N	=61B	+60N	=55N	3.5	29.0	30.5	7.25	1578	-46.0
48	Hennicken, Arnold	1699	GER	−7B	+46N	−9B	+59B	−8N	−45B	−31N	+61N	−38B	3.0	35.5	37.0	7.00	1743	+9.4
49	Schoenberger, Martin	1743	AUT	−2B	−62N	=46B	+58N	+52B	−23N	=55B	−36N	−51N	3.0	30.5	32.0	8.00	1599	-27.6
50	Wieser, Rupert	1800	AUT	=58N	=35B	−42N	+32B	=53N	=26B	−28N	F	F	3.0	28.0	29.5	11.25	1617	-24.8
51	Viehhauser, Simon	1771	AUT	−22N	−54B	=56N	=24B	−55N	F	−52B	+58N	+49B	3.0	25.5	25.5	8.75	1606	-31.6
52	Vicze, Zsofia	1840	AUT	−23N	+56B	−53N	=39B	−49N	=60B	+51N	F	F	3.0	22.0	22.0	8.50	1663	-33.6
53	von Flottwell, Lionel	1664	GER	−6B	+60N	+52B	−2N	=50B	−13N	−33B	−46N	F	2.5	35.0	35.0	6.50	1692	+8.8
54	Jeitler, Selina	1675	AUT	−9B	+51N	−34B	=46N	=44N	=37B	−14N	F	F	2.5	32.5	32.5	8.50	1725	+7.6
55	Szakolczai, Adam	1629	SUI	−30N	−37B	−59N	F	+51B	=16B	=49N	−34N	=47B	2.5	30.0	30.0	9.00	1653	+9.2
56	Scharler, Walter	1742	AUT	F	−52N	=51B	=61N	=62B	+39B	−26N	F	F	2.5	24.0	24.0	7.00	1775	+3.4
57	Gruber, Sebastian	1498	AUT	−17N	−16B	F	−37B	+47N	−44B	+60N	F	−25B	2.0	31.5	31.5	5.50	1609	+30.8
58	Vinaykumar, Kupur Nagaraju	0	AUT	=50B	−34N	−44N	−49B	+64N	=31B	−39N	−51B	−43B	2.0	29.0	29.5	4.25	1557	0.0
59	Schoerghofer, Johann	1834	AUT	−26B	−25N	+55B	−48N	−33B	+61N	−38B	F	F	2.0	29.0	29.0	4.00	1619	-68.8
60	Dahmen, Juergen	1753	GER	−20N	−53B	−38N	=64B	F	=52N	−57B	−47B	+61N	2.0	22.0	22.0	3.25	1587	-34.0
61	Braeuer, Mario	1788	AUT	−63N	−39B	=32N	=56B	−24N	−59B	=47N	−48B	−60B	1.5	26.5	27.5	5.25	1488	-121.2
62	Dragovic, Nikola	0	AUT	−47N	+49B	−16N	−41B	=56N	F	−46B	F	F	1.5	24.5	24.5	4.25	1568	0.0
63	FIDE 530012562	0	—	+61B	−10N	F	F	F	F	F	F	F	1.0	7.5	7.5	1.50	1888	0.0
64	Huber, Berthold	1743	GER	−5N	−15B	−45N	=60N	−58B	F	F	F	F	0.5	19.5	19.5	1.00	1470	-25.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Donets, AlinaAUT
+130.8
5.0 pts · #16
2Chen, Yan XiAUT
+117.2
5.0 pts · #20
3Ljubic, ZvonomirCRO
+102.8
4.5 pts · #25

Top rating losers

1Braeuer, MarioAUT
-121.2
1.5 pts · #61
2Schoerghofer, JohannAUT
-68.8
2.0 pts · #53
3Gall, KonradAUT
-66.4
4.5 pts · #39

Biggest upsets

R9+368 Elo gap
Bodo, Daniel1592 beat Hasanovic, Nurija1960
R7+344 Elo gap
Donets, Alina1616 beat Hasanovic, Nurija1960
R6+303 Elo gap
Riso, Giuseppe1696 beat Halilovic, Husein1999