CChessStats

Oren OBL Champ 2025

Open SwissStandard

24 players participated in this 8-round tournament, held from 28 Nov 2025 to 02 Dec 2025 in Orenburg, Russia. 1 titled players from 2 federations. Top 10 Elo average was 1925, and top seed was Alexey Karlov (🇷🇺 RUS, 2121).

Nikolay Gladchenko ( FID, 1885) won with 6.5/8, ahead of Ekaterina Fefelova (6.0) and Alexander Petrov (5.5). Gladchenko won solo starting round 5.

The biggest upset came in round 4: Anna Olkhovik (1633) beat Alexey Karlov (2121), a +488-point gap.

Location
🇷🇺Orenburg, Russia
Dates
28 Nov 2025 → 02 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 8 rounds
Top seed
🇷🇺Alexey Karlov2121
Avg top 10
1,925
Participants
24
Titled players · 1
WFM×1
Federations · 2 represented
🇷🇺Russia×23
FIDE (no federation)×1
Top 3

How it unfolded

Top 6 · 8 rounds

Nikolay Gladchenko led from R5; +0.5-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R5.

Co-leaders
8
5
2
3
1
1
1
1
2468R1R2R3R4R5R6R7R8
Gladchenko6.5Fefelova6Petrov5.5Danilov5Baranov5Zhukov5
R5–R8 · LEAD HELD

Nikolay Gladchenko held the sole lead from R5 through R8 without losing it.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Nikolay Gladchenko drew with WFM Ekaterina Fefelova (Black).

WIN STREAKS · 3 top finishers

Nikolay Gladchenko 3 wins (R1–R3)WFM Ekaterina Fefelova 3 wins (R1–R3)Alexander Petrov 3 wins (R2–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Nikolay Gladchenko*
½
1
—
2WFMEkaterina Fefelova
½
*
½
1
3Alexander Petrov
0
½
*
1
4Evgeniy Danilov—
0
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8PtsBu C1BuSBPerfΔ
1Gladchenko, Nikolay1885FID+9N+18B+11B=2N+12N+3B=4N=6B6.534.037.029.002058+60.4
2Fefelova, EkaterinaWFM1928RUS+15N+22B+5N=1B=3N=4B=6N+13B6.034.036.025.001952+18.4
3Petrov, Alexander2046RUS=6B+20N+16B+11N=2B−1N+5B=4N5.534.537.022.501871-42.0
4Zaprometov, Prohor1705RUS−5N+9B+18N=8B+17N=2N=1B=3B5.035.538.522.001993+86.0
5Danilov, Evgeniy0RUS+4B+14N−2B+7N=6B=11B−3N+12N5.034.538.522.5018550.0
6Kudashov, Kirill1639RUS=3N=13B+23N+20B=5N=7B=2B=1N5.034.536.020.001968+93.6
7Baranov, Alexey A.1655RUS−11B+21N+13N−5B+16B=6N=10B+14N5.029.532.018.251892+80.4
8Zhukov, Boris2001RUSF+19B+15N=4N−14B+20N=12B+11B5.025.025.016.501889-25.6
9Ohremenko, Yuliya1623RUS−1B−4N+24B=23B+10N−13B+19N+17B4.527.028.011.751830+83.6
10Bogdalov, Artur1631RUS−23N+17B−12N+19B−9B+18N=7N+15B4.525.026.514.001719+31.2
11Kuznetsov, Mikhail2072RUS+7N+12B−1N−3B+15B=5N=14B−8N4.035.038.016.501821-39.6
12Filippov, Vladimir Al.1780RUS+21B−11N+10B+16N−1B=14N=8N−5B4.032.034.514.501814+13.6
13Karlov, Alexey2121RUS=14B=6N−7B−15N+24B+9N+16B−2N4.030.531.513.001747-63.8
14Agibalov, Yakov1691RUS=13N−5B=19N+22B+8N=12B=11N−7B4.029.531.514.251879+61.2
15Olkhovik, Anna1633RUS−2B+24N−8B+13B−11N−16N+21B−10N3.029.030.07.501713+17.2
16Yanbekov, Amir1498RUS+17N+23B−3N−12B−7N+15B−13N−18B3.027.529.07.501738+69.6
17Gavrilyuk, Yuriy1726RUS−16B−10N+21B+18N−4B−19N+20B−9N3.025.027.58.001348-113.6
18Laganin, Gennadiy0RUSF−1N−4B−17B+22N−10B+24N+16N3.025.025.06.0016170.0
19Sadykov , Azat1699RUS=20B−8N=14B−10N=21N+17B−9B−22N2.526.028.07.501518-70.4
20Kavrev, Grigoriy0RUS=19N−3B+22N−6N+23B−8B−17N−21B2.525.527.04.7516200.0
21Fefelova, Kseniya1572RUS−12N−7B−17N−24N=19B+22B−15N+20N2.522.023.05.751442-38.4
22Gareev, Boris1503RUS+24B−2N−20B−14N−18B−21NF+19B2.021.521.53.501640+30.4
23Tretyakov, Alexander1915RUS+10B−16N−6B=9N−20NFFF1.519.519.56.751515-38.8
24Lyapina, Mariya1777RUS−22N−15B−9N+21B−13NF−18BF1.019.019.02.501445-71.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets