Biel Chess Festival 2025 - ATO

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109 players participated in this 9-round tournament, held from 15 Jul 2025 to 24 Jul 2025 in Biel, Switzerland. 3 titled players from 8 federations. Top 10 Elo average was 1932, and top seed was Simon Kuenzli (🇨🇭 SUI, 1993).

Simon Kuenzli (🇨🇭 SUI, 1993) won with 7.5/9, ahead of Shirui Ding (7.5) and Roman Tkhoruk (7.0). Kuenzli shared the lead from round 7, winning on tie-break.

The biggest upset came in round 2: Nuh Nizar Hilmi (1521) beat Fabrice Aegerter (1922), a +401-point gap.

Location

🇨🇭Biel, Switzerland

Dates

15 Jul 2025 → 24 Jul 2025

Time control

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

System

Swiss · 9 rounds

Top seed

🇨🇭Simon Kuenzli1993

Avg top 10

1,932

Participants

109

Titled players · 3

CM×1

WCM×2

Federations · 8 represented

🇨🇭Switzerland×72

🇩🇪Germany×12

🇮🇳India×4

FIDE (no federation)×3

🇺🇸United States of America×2

🇳🇴Norway×2

🇬🇧England×2

🇵🇱Poland×2

Top 3

🥇
Simon Kuenzli
🇨🇭SUI·1993
7.5pts·2130perf+27.8
🥈
Shirui Ding
🇨🇳CHN·1770
7.5pts·2077perf+62.4
🥉
Roman Tkhoruk
🇨🇭SUI·1893
7.0pts·2185perf+101.6

How it unfolded

Top 6 · 9 rounds

Tight race until R8; 2 players tied at 7.5/9, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders

Kuenzli7.5Ding7.5Tkhoruk7Tereshchenko7Tereshchenko7Ye6.5

R8 · LEADER CHANGE23 Jul

Simon Kuenzli takes the sole lead (7.0/8).

R9 · TIEBREAK CLUSTER

2 players finish on 7.5/9. Kuenzli takes the title on Buchholz Cut1 (50.0).

WIN STREAKS · 3 top finishers

Simon Kuenzli 4 wins (R1–R4)Shirui Ding 5 wins (R3–R7)Roman Tkhoruk 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Simon Kuenzli	*	—	½	½
2Shirui Ding	—	*	½	—
3Roman Tkhoruk	½	½	*	1
4WCMEliza Tereshchenko	½	—	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Kuenzli, Simon	1993	SUI	+40B	+26N	+18B	+10N	=3B	=17N	+5B	+7B	=4N	7.5	50.0	55.0	45.25	2130	+27.8
2	Ding, Shirui	1770	CHN	+97N	−31B	+76N	+104B	+6N	+49B	+9N	=3B	+13N	7.5	41.0	42.5	34.00	2077	+62.4
3	Tkhoruk, Roman	1893	SUI	+66N	+82B	+23N	+17B	=1N	+4B	F	=2N	+9B	7.0	48.0	51.5	39.00	2185	+101.6
4	Tereshchenko, ElizaWCM	1874	FID	+24B	+42N	+19B	=30N	+35B	−3N	+32B	+10N	=1B	7.0	46.5	51.5	38.25	2090	+98.8
5	Tereshchenko, Eva	1809	FID	=29B	+36N	+25B	+32N	=9B	+31B	−1N	+30N	+14B	7.0	45.0	50.0	37.00	2052	+112.4
6	Aegerter, Fabrice	1922	SUI	=21B	−51N	+67B	+27N	−2B	+41N	+56B	+26N	+18B	6.5	43.5	47.5	32.75	1879	-6.8
7	Ruchat, Blaise	1874	SUI	+81N	−59B	+61N	=52B	+39B	+60N	+19B	−1N	+20B	6.5	40.0	43.5	29.75	1961	+18.6
8	Ye, Zhanting K.	1857	IRL	−83B	+89N	+42B	+78N	=60B	−11B	+59N	+25N	+19B	6.5	37.0	40.5	29.00	1959	+41.2
9	Haas, Anthony	1883	SUI	+90B	+48N	+20B	=31B	=5N	+29N	−2B	+11N	−3N	6.0	48.0	51.5	31.00	1935	+26.8
10	Meshach, Felix	1905	SUI	+78B	+41N	+51B	−1B	=59N	+36N	+17B	−4B	=12N	6.0	44.5	48.0	28.50	1911	+4.2
11	Hofmann, Hans	1932	SUI	+54N	=34B	+22B	−29N	+37B	+8N	=35N	−9B	+21B	6.0	43.5	48.0	32.00	1888	-16.0
12	Jampen, Florian	0	SUI	+56B	=14N	=74B	+43N	+18B	=19N	=20B	=35N	=10B	6.0	43.0	46.5	30.75	1922	0.0
13	Bangerter, EnaWCM	1852	SUI	+69N	=63B	=39N	+54B	+20B	−30N	+29B	+32N	−2B	6.0	41.5	45.5	28.50	1905	+26.8
14	Kleinhenz, Hans-Georg	1843	GER	+86N	=12B	+63N	=59B	−17N	+54B	+38N	+31B	−5N	6.0	41.0	44.5	27.00	1945	+22.0
15	Pinelli, Gian	1841	SUI	=36B	+21N	−29B	−60N	+45B	+68N	=42B	+99N	+30B	6.0	38.5	41.0	27.00	1874	+15.6
16	Rubeck, Jonathan	1832	ENG	+94N	=104B	−65N	+63B	−83N	+61B	+36N	+17B	=35B	6.0	34.0	35.5	24.75	1975	+24.2
17	Jud, Marc	1958	SUI	+28B	+37N	+64B	−3N	+14B	=1B	−10N	−16N	+29B	5.5	48.0	52.0	29.25	1895	-12.0
18	Leuenberger, Urs	1859	SUI	+77N	+47B	−1N	+41B	−12N	+40B	=34N	+52B	−6N	5.5	44.5	48.0	25.50	1936	+16.4
19	Kulikov, Mikhail L	1907	RUS	+76N	+52B	−4N	+64B	+33N	=12B	−7N	+53B	−8N	5.5	44.0	47.5	24.50	1907	-0.4
20	Jahn, Thomas	1964	GER	+61N	+62B	−9N	+91B	−13N	+64B	=12N	+33B	−7N	5.5	41.5	44.5	23.00	1907	-24.4
21	Rajendran, Ishaan	1725	USA	=6N	−15B	+84N	=34B	+91N	=33B	+74N	+49B	−11N	5.5	40.0	43.0	22.75	1901	+82.1
22	Hasini Kamabathula	1624	IND	+33N	+71B	−11N	+53B	−49N	=62B	=37B	+43N	=23B	5.5	39.5	43.5	25.75	1917	+136.0
23	Bracher, Juerg	1848	SUI	+89B	+57N	−3B	=83N	=24B	+95N	−31N	+34B	=22N	5.5	39.5	42.5	23.25	1820	-10.8
24	Steiner, Remo	1690	SUI	−4N	=101B	+80N	+47B	=23N	=53B	−33N	+62B	+55N	5.5	39.0	41.5	23.25	1867	+37.8
25	Hirzel, Robin	1795	SUI	=84N	+96B	−5N	+72B	+65N	=38B	=49N	−8B	+50N	5.5	39.0	41.5	21.50	1766	-3.8
26	Mogasale, Chetan	1811	IND	+92N	−1B	−54N	=77B	+81N	+63B	+50N	−6B	+52N	5.5	38.5	41.5	21.25	1823	+7.2
27	Glanc, Lea	1735	SUI	−65N	+92B	=50N	−6B	=77N	+80B	=66N	+70B	+49N	5.5	34.5	37.5	21.00	1837	+43.6
28	Christoffersen, Odd	1728	NOR	−17N	+105B	−33N	+96B	−34N	=75B	+93N	+74B	+53N	5.5	32.5	34.0	16.75	1832	+22.6
29	Anetov, Aisultan	1584	KAZ	=5N	+58B	+15N	+11B	=31N	−9B	−13N	+38B	−17N	5.0	46.5	51.0	27.50	1917	+142.0
30	Conrad, Vincent	1915	SUI	+70N	=55B	+34N	=4B	+74N	+13B	F	−5B	−15N	5.0	46.5	50.0	24.25	1906	-2.8
31	Lavorgna, GiovanniCM	1912	ITA	+46B	+2N	+83B	=9N	=29B	−5N	+23B	−14N	F	5.0	45.5	45.5	27.00	1860	-9.8
32	Schmid, Nicola	1910	SUI	+72N	=39B	+55N	−5B	+52N	+59B	−4N	−13B	=41B	5.0	43.0	47.0	22.00	1824	-21.2
33	Hakvoort, Remy	1834	NED	−22B	+86N	+28B	+51N	−19B	=21N	+24B	−20N	=42B	5.0	42.5	46.0	24.25	1767	-14.6
34	Ernst, Heinz	1790	SUI	+100B	=11N	−30B	=21N	+28B	+51N	=18B	−23N	=46B	5.0	42.5	45.0	23.50	1796	+2.4
35	Mueller, Andrin	1884	SUI	+45N	+79B	=59N	+65B	−4N	F	=11B	=12B	=16N	5.0	41.5	45.0	23.50	1861	-5.2
36	Runge, Bernd	1642	GER	=15N	−5B	+101N	+71B	+62N	−10B	−16B	=58N	+63B	5.0	41.5	44.0	19.75	1812	+70.0
37	Perego, Jonas Gion	1792	SUI	+50N	−17B	=72N	+45B	−11N	+76B	=22N	=40B	=44N	5.0	40.5	44.0	22.75	1785	-1.2
38	Kalbermatter, Philipp	1908	SUI	+68B	−64N	+48B	=39N	+55B	=25N	−14B	−29N	+51B	5.0	39.5	43.5	23.25	1763	-31.6
39	Eigenmann, Walter	1764	SUI	+80N	=32N	=13B	=38B	−7N	−50B	+94N	+66B	=40N	5.0	39.5	42.5	21.00	1781	+9.2
40	Michel, Jean-claude	1730	SUI	−1N	−50B	+87N	+92B	+43B	−18N	+102B	=37N	=39B	5.0	39.0	41.0	18.50	1747	+3.4
41	Zarriess, Benjamin	1741	GER	+75N	−10B	+98N	−18N	=57B	−6B	+76N	+65B	=32N	5.0	38.5	41.0	18.25	1753	+2.0
42	Navarini, Vincent	1731	SUI	+102N	−4B	−8N	+98B	+104N	=74B	=15N	=44B	=33N	5.0	37.5	39.0	15.75	1750	+4.0
43	Wegelin, Reinhard	1812	SUI	=98N	+84B	=104N	−12B	−40N	+69B	+54N	−22B	+61N	5.0	35.0	36.5	18.00	1765	-7.2
44	Steiner, Philippe	0	SUI	−59N	+81B	+82N	=62B	−53N	+79B	=55B	=42N	=37B	5.0	34.0	37.5	19.75	1782	0.0
45	Trachsel, Peter	1695	SUI	−35B	=67N	+85B	−37N	−15N	=87B	+96N	+91B	+64B	5.0	34.0	36.5	16.75	1730	+6.8
46	Panda, Gyorgy	1718	HUN	−31N	+97B	−53N	+75B	−64N	+96B	=62N	+59B	=34N	5.0	32.5	35.0	17.00	1728	+2.8
47	Gotti, Nicola	1738	SUI	+109B	−18N	=102B	−24N	−51B	+100N	=68B	+60N	+78B	5.0	31.5	32.5	14.00	1613	-20.6
48	Funk, Kurt	1734	SUI	+101N	−9B	−38N	=93B	−50N	+104B	=75N	+69B	+99N	5.0	31.0	32.5	13.75	1581	-20.6
49	Ploder, Udo	1886	GER	−57B	+85N	+95B	+56N	+22B	−2N	=25B	−21N	−27B	4.5	42.0	45.0	19.25	1686	-42.8
50	Cloete, Willem Francois	1567	RSA	−37B	+40N	=27B	−55N	+48B	+39N	−26B	+56N	−25B	4.5	41.0	45.5	22.25	1764	+46.0
51	Nuh Nizar Hilmi	1521	IND	+91N	+6B	−10N	−33B	+47N	−34B	+64N	=55B	−38N	4.5	41.0	44.0	20.75	1818	+130.4
52	Pantillon, Patrick Andre	1764	SUI	+107B	−19N	+88B	=7N	−32B	+57N	+60B	−18N	−26B	4.5	40.0	41.5	16.75	1720	-9.0
53	Heitmann, Erik	1821	GER	+87B	−83N	+46B	−22N	+44B	=24N	+67B	−19N	−28B	4.5	39.5	43.0	20.25	1603	-82.8
54	Linder, Ernst	1726	SUI	−11B	+73N	+26B	−13N	+103B	−14N	−43B	+102N	=58B	4.5	39.0	41.0	15.75	1753	+10.4
55	Ehrsam, Andreas	1774	SUI	+105N	=30N	−32B	+50B	−38N	+78B	=44N	=51N	−24B	4.5	38.0	39.5	16.75	1717	-10.4
56	Boyer, Jean-Francois	1743	FRA	−12N	+94B	+77N	−49B	=66N	+65B	−6N	−50B	+75N	4.5	36.5	39.5	16.00	1672	-12.4
57	Aleksenko, Kirill	1707	SUI	+49N	−23B	−62N	+82B	=41N	−52B	−61N	+106B	+79N	4.5	34.5	36.0	15.50	1750	+21.6
58	Grabe, Eckart	1774	GER	=88B	−29N	+75N	=102B	=61N	=66B	=70N	=36B	=54N	4.5	33.5	35.5	17.00	1614	-30.4
59	Lesniak, Julien	1741	SUI	+44B	+7N	=35B	=14N	=10B	−32N	−8B	−46N	=65B	4.0	45.0	49.0	22.00	1754	+1.6
60	Delvecchio, Davide	0	SUI	−63N	+69B	+79N	+15B	=8N	−7B	−52N	−47B	=70N	4.0	40.5	44.0	18.75	1726	0.0
61	Bellm, Juergen	1728	GER	−20B	+87N	−7B	+73N	=58B	−16N	+57B	=67N	−43B	4.0	40.0	43.5	16.25	1727	-2.8
62	Van Bogaert, Olivier	1793	SUI	+99B	−20N	+57B	=44N	−36B	=22N	=46B	−24N	=68B	4.0	40.0	42.5	16.75	1621	-66.4
63	Hottinger, Ieremia	1734	SUI	+60B	=13N	−14B	−16N	+100B	−26N	=78N	+77B	−36N	4.0	39.5	42.0	14.75	1654	-36.0
64	Avilova, Yulia	1762	SUI	+108N	+38B	−17N	−19N	+46B	−20N	−51B	+81B	−45N	4.0	39.5	40.5	14.50	1717	-9.6
65	Chalmers, Jean-Jack	0	ENG	+27B	=74N	+16B	−35N	−25B	−56N	+103B	−41N	=59N	4.0	39.0	41.0	17.25	1741	0.0
66	Loeffler, Helmut	1709	SUI	−3B	+106N	+103B	−74N	=56B	=58N	=27B	−39N	=82B	4.0	35.5	37.0	12.50	1705	+0.8
67	Srirasa, Srisaaru	1400	SUI	−79N	=45B	−6N	+84B	+72N	+91B	−53N	=61B	F	4.0	34.5	37.5	15.00	1747	0.0
68	Meise, Volker	1715	GER	−38N	=80B	=96N	+109B	=79N	−15B	=47N	=75B	=62N	4.0	33.0	34.0	12.00	1610	-19.6
69	Juchler, Celine	1654	SUI	−13B	−60N	+107B	−103N	+73B	−43N	+85B	−48N	+102B	4.0	31.5	33.0	11.00	1581	-11.4
70	Suwendo, Poedjo	1719	SUI	−30B	−99N	−73B	+107N	+92B	+98N	=58B	−27N	=60B	4.0	31.0	32.5	11.25	1672	-8.2
71	Schaefer, Gion	1812	SUI	+73B	−22N	−78B	−36N	F	−93B	+105N	+86B	+76N	4.0	29.5	29.5	12.50	1640	-71.2
72	Luedi, Paul	1716	SUI	−32B	+100N	=37B	−25N	−67B	+108N	=79N	+94B	F	4.0	29.5	29.5	10.75	1749	+7.0
73	Jakob, Dominic	1598	SUI	−71N	−54B	+70N	−61B	−69N	+109B	−77N	+104B	+91N	4.0	28.5	29.5	9.50	1568	-12.4
74	Nergard, Ole-Kristian	1837	NOR	+93N	=65B	=12N	+66B	−30B	=42N	−21B	−28N	F	3.5	39.0	42.0	14.50	1685	-25.2
75	Barros, Gustavo	0	SUI	−41B	+90N	−58B	−46N	+86B	=28N	=48B	=68N	−56B	3.5	37.0	40.5	14.25	1641	0.0
76	Zimmermann, Stefan SUI	1714	SUI	−19B	+107N	−2B	=99N	+85B	−37N	−41B	+97N	−71B	3.5	35.5	37.0	8.75	1564	-28.2
77	Klas, Friedrich Guenther	1686	GER	−18B	+109N	−56B	=26N	=27B	−102N	+73B	−63N	=85B	3.5	34.5	35.5	12.25	1622	-10.0
78	Trzcinska, Weronika	1712	POL	−10N	+108B	+71N	−8B	F	−55N	=63B	+80B	−47N	3.5	34.5	34.5	10.50	1682	-8.3
79	Kopp, Guenter	1747	SUI	+67B	−35N	−60B	+89N	=68B	−44N	=72B	=90N	−57B	3.5	34.0	37.5	13.25	1670	-13.6
80	Archit Saigal	1494	IND	−39B	=68N	−24B	=86N	+90B	−27N	+82B	−78N	=93N	3.5	34.0	37.0	12.25	1625	+28.4
81	Strebel, Beda	1695	SUI	−7B	−44N	=100B	+88N	−26B	=85N	+98B	−64N	=84B	3.5	34.0	36.5	10.75	1626	-30.0
82	Lachausse, Bruno	1761	SUI	+106B	−3N	−44B	−57N	+93N	−94B	−80N	+92B	=66N	3.5	33.0	34.5	9.50	1597	-34.8
83	Filimonov, Arsenii	1666	SUI	+8N	+53B	−31N	=23B	+16B	F	F	F	F	3.5	32.5	32.5	19.75	2003	+89.2
84	Brandes, Stefan	1583	SUI	=25B	−43N	−21B	−67N	=97B	−90N	+109N	+103B	=81N	3.5	31.5	32.5	8.75	1615	+4.4
85	Gireada, Lucas	0	SUI	=95N	−49B	−45N	+97B	−76N	=81B	−69N	+105B	=77N	3.5	29.5	31.0	9.00	1604	0.0
86	Harte, Bernd	1646	SUI	−14B	−33B	=97N	=80B	−75N	=88N	+108B	−71N	+106N	3.5	29.5	30.5	7.25	1587	-14.0
87	Wipf, Armin	1601	SUI	−53N	−61B	−40B	+106N	=108B	=45N	−91N	=88B	+96N	3.5	29.0	30.0	8.75	1555	-12.0
88	Stroo, Kees	1544	SUI	=58N	=95B	−52N	−81B	−94N	=86B	=92N	=87N	+98B	3.5	28.5	31.0	11.25	1589	+9.4
89	Krajinski, Lutz	1648	GER	−23N	−8B	+105N	−79B	−96N	=106B	+101N	+93B	F	3.5	26.5	26.5	7.75	1553	-18.8
90	Kern, Beat	1695	SUI	−9N	−75B	−92N	+105B	−80N	+84B	+104N	=79B	F	3.5	26.0	26.0	8.25	1585	-18.6
91	Bachmann, Daniel	1766	SUI	−51B	+93N	+99B	−20N	−21B	−67N	+87B	−45N	−73B	3.0	35.0	37.5	9.00	1517	-46.6
92	Moreno Enric	1592	SUI	−26B	−27N	+90B	−40N	−70N	=101B	=88B	−82N	+103N	3.0	33.0	35.0	8.50	1577	-7.2
93	Muehlemann, Walter	1624	SUI	−74B	−91B	+108N	=48N	−82B	+71N	−28B	−89N	=80B	3.0	31.5	32.5	9.25	1571	-16.6
94	Ademi, Rexhe	1605	SUI	−16B	−56N	+106B	−95N	+88B	+82N	−39B	−72N	F	3.0	31.0	31.0	8.50	1610	-0.6
95	Ulmann, Olivier	1733	SUI	=85B	=88N	−49N	+94B	+102N	−23B	F	F	F	3.0	24.5	24.5	8.50	1634	-10.8
96	Brand, Thomas	1464	GER	=103B	−25N	=68B	−28N	+89B	−46N	−45B	=98N	−87B	2.5	34.5	36.5	7.75	1529	+22.4
97	Morgan, Jesus Alberto	1542	SUI	−2B	−46N	=86B	−85N	=84N	=105B	+107N	−76B	−100N	2.5	30.5	32.0	5.75	1487	-23.6
98	Huber, Ruth	1600	SUI	=43B	=103N	−41B	−42N	+109N	−70B	−81N	=96B	−88N	2.5	30.5	31.5	5.75	1431	-32.8
99	Trzcinska, Wiktoria	1568	POL	−62N	+70B	−91N	=76B	F	+103N	F	−15B	−48B	2.5	30.5	30.5	7.75	1657	0.0
100	Lincke, Paul	1556	SUI	−34N	−72B	=81N	+101B	−63N	−47B	−106N	F	+97B	2.5	28.0	28.0	6.75	1442	-19.0
101	Germann, Elias Markus	0	FID	−48B	=24N	−36B	−100N	F	=92N	−89B	+108N	=104B	2.5	27.0	27.0	6.00	1464	0.0
102	Lachausse, Vincent	0	SUI	−42B	F	=47N	=58N	−95B	+77B	−40N	−54B	−69N	2.0	34.5	34.5	8.25	1528	0.0
103	Balsiger, Matthias	1748	SUI	=96N	=98B	−66N	+69B	−54N	−99B	−65N	−84N	−92B	2.0	28.0	30.5	6.50	1460	-53.8
104	Wensink, Thomas I	0	USA	F	=16N	=43B	−2N	−42B	−48N	−90B	−73N	=101N	1.5	38.5	38.5	6.75	1430	0.0
105	Egli, Arnold	1549	SUI	−55B	−28N	−89B	−90N	+107B	=97N	−71B	−85N	−109B	1.5	28.5	29.5	2.75	1439	-18.4
106	Kuenzli, Manuel	1480	SUI	−82N	−66B	−94N	−87B	F	=89N	+100B	−57N	−86B	1.5	28.0	28.0	4.25	1403	-28.8
107	Reithmayer, Angela	1489	SUI	−52N	−76B	−69N	−70B	−105N	F	−97B	+109N	=108B	1.5	22.0	22.0	1.50	1210	-69.6
108	Gueldenapfel, Thomas	1489	SUI	−64B	−78N	−93B	F	=87N	−72B	−86N	−101B	=107N	1.0	25.5	25.5	2.50	1342	-21.0
109	FIDE 1369270	0	—	−47N	−77B	F	−68N	−98B	−73N	−84B	−107B	+105N	1.0	25.5	25.5	1.50	1298	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Anetov, AisultanKAZ
+142.0
5.0 pts · #30
2Hasini KamabathulaIND
+136.0
5.5 pts · #14
3Nuh Nizar HilmiIND
+130.4
4.5 pts · #39

Top rating losers

1Heitmann, ErikGER
-82.8
4.5 pts · #89
2Schaefer, GionSUI
-71.2
4.0 pts · #45
3Reithmayer, AngelaSUI
-69.6
1.5 pts · #109

Biggest upsets

R2+401 Elo gap
Nuh Nizar Hilmi1521 beat Aegerter, Fabrice1922
R6+366 Elo gap
Srirasa, Srisaaru1400 beat Bachmann, Daniel1766
R4+348 Elo gap
Anetov, Aisultan1584 beat Hofmann, Hans1932