CChessStats

38. Potsdamer Weihnachtsopen A-Turnier

Open SwissStandard

24 players participated in this 7-round tournament, held from 27 Dec 2025 to 30 Dec 2025 in Potsdam-Babelsberg, Germany. 3 federations represented. Top 10 Elo average was 1966, and top seed was Georgy Bezhenar ( FID, 2105).

Felix Zimmermann (🇩🇪 GER, 1937) won with 5.5/7, ahead of Georgy Bezhenar (5.0) and Tobias Langner (5.0). Zimmermann clinched sole first place in the final round.

The biggest upset came in round 7: Felix Zimmermann (1937) beat Georgy Bezhenar (2105), a +168-point gap.

Location
🇩🇪Potsdam-Babelsberg, Germany
Dates
27 Dec 2025 → 30 Dec 2025
Time control
Standard: 40 Moves in 60 Min. Incr. 30 Sec. / / 15 Min. Incr. 30 Sec.
System
Swiss · 7 rounds
Top seed
Georgy Bezhenar2105
Avg top 10
1,966
Participants
24
Federations · 3 represented
🇩🇪Germany×21
FIDE (no federation)×2
🇬🇧England×1
Top 3

How it unfolded

Top 6 · 7 rounds

Felix Zimmermann led from R7; +0.5-point edge over the runner-up.

Co-leaders
12
3
1
1
1
1
1
23.55.57R1R2R3R4R5R6R7Bezhenar takes leadZimmermann takes lead
Zimmermann5.5Bezhenar5Geldner5Langner5Sasse4.5Kriminski4— ex-leaders:Yildizled R3, #10
R4 · LEADER CHANGE28 Dec

Georgy Bezhenar takes the sole lead (3.5/4).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

Felix Zimmermann beat Georgy Bezhenar (White).

R1–R7 · UNBEATEN

Felix Zimmermann went unbeaten across 7 games (R1–R7).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Felix Zimmermann*
1
——
2Georgy Bezhenar
0
*—
1
3Gerrit Geldner——*—
4Tobias Langner—
0
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Zimmermann, Felix1937GER+14B=12N=16B+15N=6B+7N+2B5.522.525.520.252199+38.2
2Bezhenar, Georgy2105FID+9N+5B=6N+3B+7N=8B−1N5.027.031.021.502090-0.8
3Langner, Tobias1962GER+19B=16N=15B−2N+12B+14N+8B5.021.524.016.001993+5.4
4Geldner, Gerrit2090GER+20B=15N−7B+19N=14B+16N+6N5.019.522.015.002015-8.8
5Sasse, Leon1917GER+22N−2N+12B+9B=8N−6B+15N4.523.525.014.001967+8.6
6Nguyen, Phuc Nhat2052GER+13N+8B=2BF=1N+5N−4B4.028.031.517.252077+4.6
7Yildiz, Yunus1941GER+21N+10B+4NF−2B−1B+17N4.026.529.014.502013+19.2
8Kriminski, Christoph1897GER+24B−6N+20B+16N=5B=2N−3N4.024.025.011.251952+22.8
9Gruebnau, Joshua1818GER−2B+22N+18B−5N=11B=12N+14B4.022.524.010.751860+10.0
10Schmidt, Thilo1835GER+18B−7N=14B=12N=15B=11N+16B4.020.523.012.251853+2.6
11Scheide, Helmut1866GER−12B−14N+17N+21B=9N=10B+18N4.020.022.512.001776-9.8
12Tillmann, Uwe0GER+11N=1B−5N=10B−3N=9B+23N3.527.028.512.2518500.0
13Neumann, Ingo1765GER−6B+24N−19B−18N+23B=21N+20B3.515.516.56.251822+9.0
14Artukovic, Benjamin1711GER−1N+11B=10N+20B=4N−3B−9N3.027.530.011.001850+46.0
15Costello, Colin A1889ENG+23N=4B=3N−1B=10N=17B−5B3.027.028.510.001837-8.8
16Bochow, Sven1852GER+17N=3B=1N−8B+18N−4B−10N3.026.529.010.751704-36.0
17Lanver, Henrik0GER−16B=19N−11B+22N+24B=15N−7B3.018.019.05.2517550.0
18Grushovskii, Iurii0FID−10N+21B−9N+13B−16B=20N−11B2.521.023.57.2517080.0
19Kruspe, Hagen1753GER−3N=17B+13N−4B−21N−23N+24B2.520.521.56.001676-14.0
20Kreuchauf, Olaf1797GER−4N+23B−8N−14N+22B=18B−13N2.519.521.04.251672-20.6
21Lehnert, Steffen1740GER−7B−18NF−11N+19B=13B+22N2.518.019.05.751806+8.6
22Rennspiess, Jens1701GER−5B−9B=23N−17B−20N+24N−21B1.518.019.01.751560-21.8
23Gericke, Manfred1620GER−15B−20N=22B−24N−13N+19B−12B1.516.517.53.251562-18.0
24Demirdizen, Cem1628GER−8N−13BF+23B−17N−22B−19N1.017.018.51.501507-28.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets