Marburger Schachtage 2025 B-Open

Open SwissStandard

89 players participated in this 7-round tournament, held from 16 Oct 2025 to 19 Oct 2025 in Marburg, Germany. 4 federations represented. Top 10 Elo average was 1841, and top seed was Lutz Kemp (🇩🇪 GER, 1874).

Maximilian Maerz (🇩🇪 GER, 1862) won with 6.5/7, ahead of Malte Petersen (6.0) and Mert Alkin (6.0). Maerz won solo starting round 5.

The biggest upset came in round 2: Albert Ferderer (1620) beat Lutz Kemp (1874), a +254-point gap.

Location

🇩🇪Marburg, Germany

Dates

16 Oct 2025 → 19 Oct 2025

Time control

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

System

Swiss · 7 rounds

Top seed

🇩🇪Lutz Kemp1874

Avg top 10

1,841

Participants

Federations · 4 represented

🇩🇪Germany×82

🇱🇺Luxembourg×2

🇵🇱Poland×1

🇰🇬Kyrgyzstan×1

Top 3

🥇
Maximilian Maerz
🇩🇪GER·1862
6.5pts·2083perf+21.2
🥈
Malte Petersen
🇩🇪GER·1814
6.0pts·2113perf+31.8
🥉
Mert Alkin
🇩🇪GER·1774
6.0pts·1930perf+18.8

How it unfolded

Top 6 · 7 rounds

Maximilian Maerz led from R5; +0.5-point edge over the runner-up. Title race converged from 4 co-leaders at R4 to 1 by R5.

Co-leaders

Maerz6.5Petersen6Alkin6Bender5.5Germann5Zahn5

R5–R7 · LEAD HELD

Maximilian Maerz held the sole lead from R5 through R7 without losing it.

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Maximilian Maerz drew with Malte Petersen (Black).

WIN STREAKS · 3 top finishers

Maximilian Maerz 6 wins (R1–R6)Malte Petersen 3 wins (R4–R6)Mert Alkin 6 wins (R2–R7)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Maximilian Maerz	*	½	—	1
2Malte Petersen	½	*	—	—
3Mert Alkin	—	—	*	—
4Nils Bender	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Maerz, Maximilian	1862	GER	+81N	+43B	+27N	+7B	+6N	+4B	=2N	6.5	29.0	30.5	27.50	2083	+21.2
2	Petersen, Malte	1814	GER	+76N	+40B	=14N	+16B	+13N	+5B	=1B	6.0	28.5	30.5	25.00	2113	+31.8
3	Alkin, Mert	1774	GER	−37N	+73B	+78N	+39B	+23N	+7B	+6B	6.0	23.0	24.5	21.00	1930	+18.8
4	Bender, Nils	0	GER	+63N	+67B	+49N	+13B	=5B	−1N	+21N	5.5	26.0	28.5	19.50	1800	0.0
5	Zahn, Emely	0	GER	+50B	+15N	+29B	+8B	=4N	−2N	=16B	5.0	29.5	32.5	21.50	1861	0.0
6	Laterveer, Laurens	1740	GER	+62B	+58N	+25B	+10N	−1B	+8B	−3N	5.0	29.5	32.0	19.50	1879	+45.6
7	Koleber, Michael Gerd	0	GER	+74B	+61N	+11B	−1N	+24B	−3N	+42B	5.0	27.5	29.5	17.00	1689	0.0
8	Gao, Chen Fan	1818	GER	+71B	+26N	+23B	−5N	+14B	−6N	+28B	5.0	26.5	28.5	18.50	1820	+1.2
9	Kemp, Lutz	1874	GER	+51B	−23N	+45B	=15N	+22B	+18N	=12B	5.0	26.0	29.0	20.25	1728	-15.4
10	Hallen, Maxime	1813	GER	+52N	=30B	+44N	−6B	+40N	+37B	=11N	5.0	24.5	27.5	18.00	1833	+6.4
11	Germann, Phil	0	GER	+88N	+41B	−7N	+49B	+25B	=29N	=10B	5.0	24.5	24.5	15.00	1806	0.0
12	Deniz, Ata Goekay	1750	GER	F	+59N	+71B	=51N	+83B	+38B	=9N	5.0	17.0	17.0	13.00	1864	+24.0
13	Besou, Jad	1865	GER	+53B	+39N	+18B	−4N	−2B	+50N	=14N	4.5	27.0	30.0	16.25	1826	-4.8
14	Boschert, Lukas	0	GER	+24B	+66N	=2B	+38B	−8N	=31N	=13B	4.5	27.0	29.5	17.25	1742	0.0
15	Brucker, Frank	1842	GER	+17N	−5B	+46N	=9B	=56N	=19B	+37N	4.5	26.0	29.0	17.75	1826	-1.2
16	Schweisgut, Jens, Dr.	1804	GER	+54B	=28N	+20B	−2N	=53B	+52N	=5N	4.5	25.5	28.5	16.50	1845	+6.0
17	Arslan, Abdussamed	0	GER	−15B	=32N	+47B	=50N	+26N	=23B	+38N	4.5	23.5	26.5	16.50	1726	0.0
18	Euler, Klaus	0	GER	+75N	+55B	−13N	+26B	=37N	−9B	+43N	4.5	23.5	25.5	14.25	1718	0.0
19	Bischoff, Laura	0	GER	−26B	−71N	+59B	+64B	+30N	=15N	+39B	4.5	21.5	23.5	15.25	1670	0.0
20	Scherer, Mark	1690	GER	=38N	+56B	−16N	−43B	+78N	+44B	+41N	4.5	21.5	23.0	13.25	1800	+37.2
21	Huettinger, Siegfried	1641	GER	+83B	−49B	=80N	+62N	+42B	+25N	−4B	4.5	20.0	20.5	11.25	1731	+9.4
22	Bajramovic, Enedin	1550	GER	+79N	=78B	−37N	+72B	−9N	+40B	+56N	4.5	18.5	20.0	10.75	1782	+72.4
23	Ferderer, Albert	1620	GER	+65N	+9B	−8N	+41B	−3B	=17N	=32B	4.0	28.0	30.5	15.25	1804	+29.2
24	Royen, Jan	1575	GER	−14N	+69B	+57N	+27B	−7N	+34B	−33N	4.0	24.5	27.0	13.50	1881	+77.6
25	Eckert, Michael	1719	GER	+64N	+57B	−6N	+30B	−11N	−21B	+55N	4.0	24.5	27.0	12.50	1666	-6.2
26	Freund, Dominik	0	GER	+19N	−8B	+55N	−18N	−17B	+72B	+49N	4.0	24.5	26.5	12.50	1731	0.0
27	Wolf, Helena	1652	GER	+59B	+80N	−1B	−24N	+45B	−28N	+51B	4.0	24.0	25.5	11.00	1537	-32.4
28	Kim, David	1587	KGZ	+70N	=16B	−38N	+78B	=33N	+27B	−8N	4.0	23.5	25.0	12.25	1671	+20.8
29	Kravchenko, Kostiantyn	1836	GER	+48N	=44B	−5N	+76B	+43N	=11B	F	4.0	22.5	22.5	13.25	2040	+16.0
30	von Oesen, Ruben	1596	GER	+87B	=10N	=42B	−25N	−19B	+74N	+52B	4.0	22.0	22.0	9.25	1762	+34.8
31	Guzdziol, Grzegorz	1657	LUX	=46N	=72B	+52N	=37B	+44N	=14B	F	4.0	20.0	20.0	13.25	1849	+39.6
32	Kaeding, Wolfgang	1695	GER	−78N	=17B	=75N	+63B	+65N	=41B	=23N	4.0	19.0	20.5	12.00	1766	+9.6
33	Avhopulo, Kirill	1703	GER	=72N	=46B	=76N	F	=28B	+53N	+24B	4.0	18.5	20.0	12.75	1717	+2.4
34	Seidler, Ottmar	1739	GER	−58B	−62N	+77B	+73N	+71B	−24N	+53B	4.0	16.5	18.5	9.00	1667	-7.8
35	Fettig, Konrad	1662	GER	−61B	−54N	=74B	+84N	+62B	=51N	+57B	4.0	16.0	16.5	8.50	1591	-23.2
36	Goel, Archit	0	GER	−39B	−45N	=85B	=86N	+73B	+68N	+50B	4.0	15.0	15.5	8.00	1702	0.0
37	Witt, Alexander	1621	GER	+3B	=42N	+22B	=31N	=18B	−10N	−15B	3.5	28.5	32.0	16.50	1727	+13.6
38	Duchstein, Anna	1736	GER	=20B	+86N	+28B	−14N	+51B	−12N	−17B	3.5	25.5	26.0	9.75	1773	+5.4
39	Schimming, Wilhelm	1601	GER	+36N	−13B	+64N	−3N	+54B	=56B	−19N	3.5	25.0	27.5	11.00	1680	+14.0
40	Will, Elina	1593	GER	+85B	−2N	+54B	=42N	−10B	−22N	+66B	3.5	24.5	25.0	7.75	1617	+3.6
41	Kolker, Vladislav	1803	GER	+45B	−11N	+60B	−23N	+57B	=32N	−20B	3.5	24.0	27.0	11.50	1629	-22.6
42	Baumgartner, Colin	0	GER	+73N	=37B	=30N	=40B	−21N	+61B	−7N	3.5	23.0	25.0	10.00	1668	0.0
43	Waluga, Kilian	1789	GER	+82B	−1N	=61B	+20N	−29B	+83N	−18B	3.5	23.0	23.5	7.25	1652	-30.0
44	Kaiser, Danny	1714	GER	+77B	=29N	−10B	+61N	−31B	−20N	+63B	3.5	22.5	24.5	9.00	1650	-22.8
45	Sydykova, Zarema	0	GER	−41N	+36B	−9N	+55B	−27N	=65B	+61N	3.5	22.0	24.5	10.75	1587	0.0
46	Burbaum, Clemens	0	GER	=31B	=33N	−15B	+58N	−50B	=66N	+83B	3.5	21.0	21.5	8.75	1519	0.0
47	Adam, Maximilian	1651	GER	−67N	=75B	−17N	+79B	=72N	=63B	+64N	3.5	16.0	17.5	7.25	1691	+8.4
48	Piacentino, Mirco	1699	GER	−29B	+77N	=66B	F	F	+70N	+62B	3.5	13.5	13.5	8.25	1660	-3.4
49	Stiehler, Klaus	1785	GER	+60B	+21N	−4B	−11N	−52B	+54N	−26B	3.0	25.0	28.0	10.50	1849	+6.8
50	Keglevic, Christian	1684	GER	−5N	+63B	=72N	=17B	+46N	−13B	−36N	3.0	24.0	26.0	9.25	1708	+2.8
51	Zargaran, Paya	1519	GER	−9N	+79B	+67N	=12B	−38N	=35B	−27N	3.0	24.0	25.5	8.50	1575	+14.0
52	Jacoby, Jermaine	1571	GER	−10B	+87N	−31B	+75N	+49N	−16B	−30N	3.0	22.5	22.5	5.00	1583	+1.6
53	Goebel, Johannes	0	GER	−13N	+65B	=83N	+68B	=16N	−33B	−34N	3.0	22.0	22.5	7.50	1646	0.0
54	Brucker, Oscar	1818	GER	−16N	+35B	−40N	+69B	−39N	−49B	+65N	3.0	21.0	23.5	9.00	1597	-80.0
55	Trunz, Daniel	1447	GER	+89B	−18N	−26B	−45N	+60B	+71N	−25B	3.0	21.0	21.0	5.00	1820	+76.4
56	Derr, Georg	1607	GER	F	−20N	+86B	+66N	=15B	=39N	−22B	3.0	20.0	20.0	7.00	1618	+1.2
57	Wadowski, Adam	1542	POL	+84B	−25N	−24B	+74N	−41N	+75B	−35N	3.0	19.5	20.0	4.50	1528	-3.0
58	Gupta, Divyaansh	0	GER	+34N	−6B	−68N	−46B	−64N	+87B	+73N	3.0	19.5	19.5	6.00	1732	0.0
59	Mueller, Claus	0	GER	−27N	−12B	−19N	+85N	−69B	+88B	+72N	3.0	18.5	18.5	2.50	1545	0.0
60	Pishnograev, Ilya	1591	GER	−49N	+88B	−41N	−65B	−55N	+82B	+74N	3.0	15.0	15.0	3.00	1462	-42.4
61	Seibert, Dominic	1569	GER	+35N	−7B	=43N	−44B	+68N	−42N	−45B	2.5	23.0	25.5	8.25	1783	+45.2
62	Bahlo, Alondra	1535	GER	−6N	+34B	=81N	−21B	−35N	+78B	−48N	2.5	22.5	24.0	6.25	1486	-7.4
63	Hentschel, Christoph	1545	GER	−4B	−50N	+87B	−32N	+67B	=47N	−44N	2.5	22.0	22.0	4.25	1366	-30.0
64	Kuly, Eckhard	0	GER	−25B	+85N	−39B	−19N	+58B	=69N	−47B	2.5	21.0	21.5	4.75	1311	0.0
65	Miller, Edward	1522	GER	−23B	−53N	+70B	+60N	−32B	=45N	−54B	2.5	20.5	23.0	7.25	1489	-7.2
66	Wolf, Aurelia	1449	GER	+69N	−14B	=48N	−56B	=76N	=46B	−40N	2.5	20.5	22.5	7.00	1544	+23.2
67	Papantchev, Vian	0	GER	+47B	−4N	−51B	−71N	−63N	=79B	+88N	2.5	18.0	18.0	4.25	1477	0.0
68	Zimmer, Patrick	1584	GER	−80B	=74N	+58B	−53N	−61B	−36B	+84N	2.5	16.0	16.5	4.50	1272	-46.4
69	Guzdziol, Olaf	1547	LUX	−66B	−24N	+82B	−54N	+59N	=64B	F	2.5	16.0	16.0	5.25	814	-53.2
70	Jobe, Justin	0	GER	−28B	F	−65N	=77N	+84B	−48B	+79N	2.5	14.0	14.0	3.00	1406	0.0
71	Meuer, Stephan	1561	GER	−8N	+19B	−12N	+67B	−34N	−55B	F	2.0	24.0	24.0	7.00	889	-27.0
72	Heinz, Friedrich	1714	GER	=33B	=31N	=50B	−22N	=47B	−26N	−59B	2.0	23.0	26.0	7.25	1578	-18.8
73	Schoen, Wolfgang	1865	GER	−42B	−3N	+88B	−34B	−36N	+77N	−58B	2.0	22.5	22.5	2.00	1611	-45.2
74	Hildebrand, Georg	1563	GER	−7N	=68B	=35N	−57B	+82N	−30B	−60B	2.0	21.5	22.5	4.25	1356	-25.4
75	Werner, Andreas	1595	GER	−18B	=47N	=32B	−52B	+87N	−57N	F	2.0	18.0	18.0	3.75	1422	-17.6
76	Eckhoff, Mathias	1610	GER	−2B	+84N	=33B	−29N	=66B	F	F	2.0	17.0	17.0	3.75	1508	-10.6
77	Hafner, Hans-Peter	1438	GER	−44N	−48B	−34N	=70B	=79N	−73B	+87N	2.0	17.0	17.0	2.00	1338	-9.0
78	Wellmann, Max	0	GER	+32B	=22N	−3B	−28N	−20B	−62N	F	1.5	25.5	25.5	6.25	1446	0.0
79	Knoth, Michael	1530	GER	−22B	−51N	=84B	−47N	=77B	=67N	−70B	1.5	18.0	18.5	2.50	1217	-58.4
80	Maneljuk, Matthias	1503	GER	+68N	−27B	=21B	F	F	F	F	1.5	15.0	15.0	4.75	1626	+20.0
81	Hallen, Daniel	1591	GER	−1B	+82N	=62B	F	F	F	F	1.5	10.5	10.5	2.25	1506	-10.0
82	Schulmeier, Gerd-Bernd	0	GER	−43N	−81B	−69N	+88N	−74B	−60N	F	1.0	12.5	12.5	0.00	1311	0.0
83	FIDE 533015996	0	—	−21N	F	=53B	F	−12N	−43B	−46N	0.5	21.0	21.0	1.50	927	0.0
84	Fettig, Stephan	0	GER	−57N	−76B	=79N	−35B	−70N	F	−68B	0.5	15.5	15.5	0.75	1220	0.0
85	FIDE 533054568	0	—	−40N	−64B	=36N	−59B	F	F	F	0.5	13.0	13.0	2.00	793	0.0
86	Schimming, Juergen	1574	GER	F	−38B	−56N	=36B	F	F	F	0.5	10.5	10.5	2.00	874	-29.6
87	FIDE 533050228	0	—	−30N	−52B	−63N	F	−75B	−58N	−77B	0.0	16.5	16.5	0.00	749	0.0
88	Mohammadi, Sholeh	1400	GER	−11B	−60N	−73N	−82B	F	−59N	−67B	0.0	16.5	16.5	0.00	897	-6.6
89	Fischermann, Charlotte	1634	GER	−55N	F	F	F	F	F	F	0.0	3.0	3.0	0.00	648	-29.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Royen, JanGER
+77.6
4.0 pts · #10
2Trunz, DanielGER
+76.4
3.0 pts · #26
3Bajramovic, EnedinGER
+72.4
4.5 pts · #7

Top rating losers

1Brucker, OscarGER
-80.0
3.0 pts · #24
2Knoth, MichaelGER
-58.4
1.5 pts · #78
3Guzdziol, OlafLUX
-53.2
2.5 pts · #88

Biggest upsets

R2+254 Elo gap
Ferderer, Albert1620 beat Kemp, Lutz1874
R3+225 Elo gap
Will, Elina1593 beat Brucker, Oscar1818
R5+217 Elo gap
Schimming, Wilhelm1601 beat Brucker, Oscar1818