CChessStats

Marina Cup A tournament

Open SwissStandard

27 players participated in this 7-round tournament, held from 02 Aug 2025 to 03 Aug 2025 in Gabrovo, Bulgaria. 4 federations represented. Top 10 Elo average was 1612, and top seed was Liam L Kojuharov (🇺🇸 USA, 1764).

Liam L Kojuharov (🇺🇸 USA, 1764) won with 6.0/7, ahead of Borislav Stoev (6.0) and Aleksandar Georgiev (5.5). Kojuharov shared the lead from round 4, winning on tie-break.

The biggest upset came in round 7: Preslav Zhelyazkov (1566) beat Yoan Velchev (1724), a +158-point gap.

Location
🇧🇬Gabrovo, Bulgaria
Dates
02 Aug 2025 → 03 Aug 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇺🇸Liam L Kojuharov1764
Avg top 10
1,612
Participants
27
Federations · 4 represented
🇧🇬Bulgaria×17
🇬🇷Greece×2
🇺🇸United States of America×2
🇪🇸Spain×1
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R5; 2 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders
12
6
1
3
1
2
2
23.55.57R1R2R3R4R5R6R7Kojuharov takes lead
Kojuharov6Stoev6Georgiev5.5Zhelyazkov5Ivanov4.5Genov4.5
R5 · LEADER CHANGE03 Aug

Liam L Kojuharov takes the sole lead (4.5/5).

R7 · TIEBREAK CLUSTER

2 players finish on 6.0/7. Kojuharov takes the title on Buchholz Cut1 (29.5).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Liam L Kojuharov drew with Borislav Stoev (White).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Liam L Kojuharov*
½
½
1
2Borislav Stoev
½
*
½
1
3Aleksandar Georgiev
½
½
*—
4Preslav Zhelyazkov
0
0
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Kojuharov, Liam L1764USA+16B+4N=2B+7N+9B=3N+5B6.029.532.526.751909+42.4
2Stoev, Borislav1617BUL+19N+24B=1N+5B=3N+4B+6N6.028.530.024.251871+74.0
3Georgiev, Aleksandar1684BUL+26B+13N+11B=9N=2B=1B+10N5.527.527.519.501804+37.2
4Zhelyazkov, Preslav1566BUL+17N−1B+6N+15B+14N−2N+9B5.026.529.517.501644+16.0
5Ivanov, Denislav1609BUL+27B+18N=9B−2N+8B+7N−1N4.528.028.014.001630+6.0
6Genov, Samuil1471BUL+22B=7N−4B+18N+13B+11N−2B4.526.028.014.751549+21.6
7Kyosev, Martin1584BUL+15N=6B+10N−1B+20N−5B+13N4.525.528.015.2515870.0
8Vasilev, Kristiyan1464BUL=23N−11B+21N+25B−5N+17B+16N4.519.020.511.001371-14.8
9Velchev, Yoan1724BUL+21N+10B=5N=3B−1N+14B−4N4.028.030.514.501569-42.8
10Stoyadinov, Viktor1583BUL+20B−9N−7B+12N+22B+18N−3B4.023.525.511.50864-46.8
11Kolliopoulos, Georgios1462GRE+25B+8N−3N−14B+19N−6B+15N4.023.525.012.001414-8.4
12Nanev, Rosen0BUL−24N+19B−15N−10B+21N+25B+14N4.017.018.510.007410.0
13Kolliopoulos, Vasilis1490GRE+14N−3B=17N+23B−6N+20B−7B3.523.025.09.00779-49.2
14Parvanov, Petar0BUL−13B+27N+16B+11N−4B−9N−12B3.023.523.57.0014640.0
15Kojuharova, Dahlia0USA−7B+22N+12B−4N−18B+24N−11B3.022.524.07.5013360.0
16Totev, Stefan1414BUL−1N+23B−14N=19B+25N=22B−8B3.020.522.06.00813-21.6
17Markov, Angel0BUL−4B+26N=13B−20N+23B−8N=19N3.020.520.55.2512400.0
18Vasilev Georgiev, Ramon Emanuel0ESPF−5B+24N−6B+15N−10B+20N3.020.020.07.0013470.0
19FIDE 29569340—−2B−12N+27B=16N−11B+26N=17B3.020.020.03.0012260.0
20FIDE 5250351930—−10N+21B=25N+17B−7B−13N−18B2.520.522.06.257600.0
21Daneva, Kristiana0BUL−9B−20N−8B+26N−12B+23N=22N2.519.019.03.007940.0
22Ruseva, Spasimira0BUL−6N−15BF+24B−10N=16N=21B2.018.518.54.2514050.0
23FIDE 29570430—=8B−16N+26B−13N−17N−21B=24B2.018.018.03.0012790.0
24Ekimova, Diana1501BUL+12B−2N−18B−22NF−15B=23N1.520.020.05.00817-13.6
25Tsenova, Silviya0BUL−11NF=20B−8N−16B−12N+26B1.518.018.01.256480.0
26FIDE 29748510—−3N−17B−23N−21BF−19B−25N0.017.517.50.008840.0
27FIDE 29748780—−5N−14B−19NFFFF0.012.012.00.008090.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets