CChessStats

44. Wilhelm-Werner-Gedaechtnisturnier B-Open

Open SwissStandard

26 players participated in this 7-round tournament, held from 14 May 2026 to 17 May 2026 in Bad Salzdetfurth, Germany. Top 10 Elo average was 1737, and top seed was Vitaliy Sviridov (🇩🇪 GER, 1813).

Hannes Leon Grunwald (🇩🇪 GER, 1697) won with 5.5/7, ahead of Peter Koths (5.5) and Hans-Joachim Schilly (5.0). Grunwald shared the lead from round 1, winning on tie-break.

The biggest upset came in round 4: Leonidas Rueckinger (1503) beat Frank Knorr (1641), a +138-point gap.

Location
🇩🇪Bad Salzdetfurth, Germany
Dates
14 May 2026 → 17 May 2026
Time control
Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1
System
Swiss · 7 rounds
Top seed
🇩🇪Vitaliy Sviridov1813
Avg top 10
1,737
Participants
26
Federations · 1 represented
🇩🇪Germany×25
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 5.5/7, decided on Buchholz.

Co-leaders
8
2
1
1
1
2
2
23.55.57R1R2R3R4R5R6R7
Koths5.5Grunwald5.5Maertens5Zhang5Schilly5Sviridov4— ex-leaders:Grunwaldled R3–R5, #10
R7 · TIEBREAK CLUSTER

2 players finish on 5.5/7. Grunwald takes the title on Buchholz Cut1 (25.5).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Peter Koths drew with Hannes Leon Grunwald (White).

WIN STREAKS · 3 top finishers

Peter Koths 3 wins (R4–R6)Hannes Leon Grunwald 4 wins (R1–R4)Uwe Maertens 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Peter Koths*
½
——
2Hannes Leon Grunwald
½
*
½
—
3Uwe Maertens—
½
*—
4Jiahui Zhang———*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Grunwald, Hannes Leon1697GER+8N+14B+16B+7N=12N=4B=2N5.525.528.521.501920+23.2
2Koths, Peter1779GER+19B=6N=9B+8N+16N+12B=1B5.524.026.019.251864+11.8
3Schilly, Hans-Joachim1798GER=18N+4B−7N+13B=5N+16B+12N5.024.026.518.751751-5.8
4Maertens, Uwe0GER=21B−3N+26B+19N+6B=1N+7N5.022.523.014.2517370.0
5Zhang, Jiahui1691GER+23B−16N+20B=6N=3B+9N+10B5.022.023.015.501911+32.8
6Felis, Timo1689GER+17N=2B=12N=5B−4N+18B=11N4.026.028.514.501785+26.4
7Diehn, Johannes1680GER+22B=9N+3B−1B+21N=10N−4B4.025.527.513.001769+24.8
8Ramkumar, Dhuruvan0GER−1B+24N+21B−2B=11N=13B+16N4.023.524.59.7516240.0
9Sviridov, Vitaliy1813GER+13N=7B=2N−16B+20N−5B+19N4.023.025.012.251787-3.8
10Rueckinger, Leonidas1503GER=11N−12B+23N+14B+18N=7B−5N4.022.523.511.001695+70.4
11Warns, Harald1703GER=10B=20N+18N−12B=8B+15N=6B4.021.523.513.001640-8.4
12Grabowski, Petra1806GER=20B+10N=6B+11N=1B−2N−3B3.528.030.013.751684-22.0
13Glaschak, Joachim1630GER−9B+22N=15B−3N=19B=8N+18B3.521.023.09.251605-3.6
14Knorr, Frank1641GER+24B−1N=19B−10N−15B+23N+17B3.519.020.06.001457-20.2
15Omeirat, Ali0GER=26B=21N=13N−18B+14N−11B+20N3.517.518.08.5016410.0
16Henze, Christian0GER+25B+5B−1N+9N−2B−3N−8B3.029.030.010.0017480.0
17Uta, Peter0GER−6B−19N+22B−21N+24N+20B−14N3.015.516.55.0013980.0
18Lambrecht, Harald1586GER=3B+26N−11B+15N−10B−6N−13N2.524.024.56.501467-18.2
19Neumann, Bernd1571GER−2N+17B=14N−4B=13NF−9B2.024.526.56.501523-5.0
20Seeber, Helmut1618GER=12N=11B−5N+24B−9B−17N−15B2.023.024.04.751560-5.8
21Mustafa, Abdulrahman1672GER=4N=15B−8N+17B−7BFF2.021.521.57.25880-19.6
22Willing, Robyn0GER−7N−13B−17N+26N=23B=24BF2.013.013.01.5015000.0
23Willing, Zoe1405GER−5N−25N−10BF=22N−14B=24N1.016.516.51.50837-34.8
24FIDE 5330838350—−14N−8BF−20N−17B=22N=23B1.015.515.51.5012820.0
25Szymanski, Andreas1711GER−16N+23BFFFFF1.04.04.01.002205+2.8
26Drygala, Torsten1634GER=15N−18B−4N−22BFFF0.513.013.01.75786-11.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets