CChessStats

Oranienburger Chess Open 2025 Gruppe A

Open SwissStandard

26 players participated in this 5-round tournament, held from 13 Sept 2025 to 14 Sept 2025 in Oranienburg, Germany. 2 titled players from 4 federations. Top 10 Elo average was 2122, and top seed was Johannes Tschernatsch (🇩🇪 GER, FM, 2315).

Michael Strache (🇩🇪 GER, 2254) won with 4.5/5, ahead of Johannes Tschernatsch (4.5) and Henrik Petersen (3.5). Strache shared the lead from round 1, winning on tie-break.

The biggest upset came in round 2: Hannes Artur Schroeder (1826) beat Benno Zahn (2135), a +309-point gap.

Location
🇩🇪Oranienburg, Germany
Dates
13 Sept 2025 → 14 Sept 2025
Time control
Standard: 30 Moves in 60 Min. / / 30 Min.
System
Swiss · 5 rounds
Top seed
🇩🇪FMJohannes Tschernatsch2315
Avg top 10
2,122
Participants
26
Titled players · 2
FM×2
Federations · 4 represented
🇩🇪Germany×23
FIDE (no federation)×1
🇫🇷France×1
🇪🇬Egypt×1
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders
9
3
1
3
2
1.52.545R1R2R3R4R5
Tschernatsch4.5Strache4.5Richter3.5Sitte3.5Petersen3.5Bezhenar3
R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Strache takes the title on Buchholz Cut1 (12.5).

R1–R3 · WIN STREAK

Michael Strache won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMJohannes Tschernatsch*———
2Michael Strache—*
1
—
3Felix Richter—
0
*
½
4Adrian Sitte——
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Strache, Michael2254GER+22N+10B+6N=3B+4N4.512.513.511.752397+11.6
2Tschernatsch, JohannesFM2315GER+11N+24B=3N+21B+16B4.510.011.09.252433+10.8
3Petersen, HenrikFM2279GER+8B+9N=2B=1N=7B3.515.017.511.502276+1.6
4Richter, Felix1932GER+16N=5B+17N+7N−1B3.513.015.08.752190+67.2
5Sitte, Adrian1999GER=14B=4N+25B=9N+12B3.511.012.07.752105+13.8
6Bezhenar, Georgy2060FID+23B=12N−1B=13N+19B3.011.512.55.502088+4.0
7Teichert, Felix2088GER=20N+18B+24N−4B=3N3.011.012.05.752094+1.2
8Mueller, Reinhard1976GER−3N=13B+18N=10B+17N3.010.512.56.502066+8.4
9Beduschi, Ben2001GER+13N−3B=11N=5B=10N2.512.014.56.752040+6.4
10Hrin, Mykola0GER+25B−1N=19B=8N=9B2.512.013.04.7520420.0
11Burguete, Leandro1983FRA−2B+23N=9B−12N+20B2.511.512.54.252044+6.8
12Moeller, Jared William1970GER+15N=6BF+11B−5N2.511.511.56.502139+18.0
13Sasse, Leon1899GER−9B=8N+22B=6B=15N2.511.012.05.252030+17.4
14Scharf, Christian1891GER=5N=21B−16N=18B+26N2.59.59.53.751970+10.8
15Zahn, Benno2135GER−12B−17N+23B+25N=13B2.58.09.03.251929-26.2
16Torosyan, Bagrat2035GER−4B+22N+14BF−2N2.011.512.53.502028-2.8
17Schroeder, Hannes Artur1826GER=21N+15B−4B=19N−8B2.011.013.04.501933+25.6
18Miowitz, Torsten1881GER=19B−7N−8B=14N+23B2.010.511.53.251910+3.4
19Zitzelsberger, Philipp1994GER=18N=20B=10N=17B−6N2.09.511.54.251847-16.2
20Nguyen, Viet Anh1970GER=7B=19N−21N+26B−11N2.09.59.52.501928-11.6
21Kutschke, Jens1989GER=17B=14N+20B−2N—2.09.011.04.252001-0.2
22Omar, Samy1976EGY−1B−16B−13N−23N+25B1.010.011.01.001788-24.2
23Matthes, Benjamin1964GER−6N−11B−15N+22B−18N1.010.011.01.001767-24.0
24Brau, Luca2049GER+26N−2N−7BF—1.09.59.50.001991-10.8
25Eichler, Jan-Christoph1986GER−10N+26B−5N−15B−22N1.09.59.50.001821-17.0
26Hoffmann, Rainer1946GER−24B−25NF−20N−14B0.06.56.50.001174-37.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets