CChessStats

Cluj Chess Marathon Open - 11th ed.

Open SwissStandard

15 players participated in this 7-round tournament, held from 30 Jan 2026 to 01 Feb 2026 in Cluj-Napoca, Romania. 1 titled players. Top 10 Elo average was 1777, and top seed was Petru-Sebastian Ursan (🇷🇴 ROU, CM, 2195).

Petru-Sebastian Ursan (🇷🇴 ROU, CM, 2195) won with 7.0/7, ahead of Horatiu Bran (4.5) and Alin-Sebastian Tat (4.0). Ursan won solo starting round 3.

The biggest upset came in round 5: Luca Donici-Maier (1654) beat Janos Helmer (2019), a +365-point gap.

Location
🇷🇴Cluj-Napoca, Romania
Dates
30 Jan 2026 → 01 Feb 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇷🇴CMPetru-Sebastian Ursan2195
Avg top 10
1,777
Participants
15
Titled players · 1
CM×1
Federations · 1 represented
🇷🇴Romania×14
Top 3

How it unfolded

Top 6 · 7 rounds

CM Petru-Sebastian Ursan led from R3; +2.5-point edge over the runner-up.

Co-leaders
5
2
1
1
1
1
1
23.55.57R1R2R3R4R5R6R7
R3–R7 · LEAD HELD

CM Petru-Sebastian Ursan never relinquished the lead after R3; final gap +2.5 over the runner-up.

R1 · HEAD-TO-HEAD · WINNER VS 2ND

CM Petru-Sebastian Ursan beat Horatiu Bran (White).

R1–R7 · WIN STREAK

CM Petru-Sebastian Ursan won 7 in a row (R1–R7).

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Ursan, Petru-SebastianCM2195ROU+2B+12N+4B+6N+5N+3B+7N7.023.525.525.502641+16.4
2Bran, Horatiu1657ROU1N+8B+12N=3B+9N+7B5N4.524.026.013.001835+30.8
3Tat, Alin-Sebastian1683ROU12B+15N+10B=2N+6B1N=4B4.024.024.010.751777+11.2
4Helmer, Janos2019ROU+9N+11B1N=5B7N+10B=3N4.023.526.012.001811-29.2
5Voinescu, Marian-David1893ROUF+7B+14N=4N1B=6N+2B4.023.023.012.001904+8.4
6Guo, Aris-Dian1683ROU+8N=14B+11N1B3N=5B+13B4.022.523.09.751767+27.6
7Donici-Maier, Luca1654ROUF5N+15B+14N+4B2N1B3.020.020.04.501736+19.6
8Tamas, Alexandru-Marius1578ROU6B2N9NF+12B+11B+10N3.018.518.57.001646+12.8
9Fantana, Daniel-Vasile1655ROU4B10N+8B+15N2BF+14N3.014.514.53.501580-12.0
10Bindea, Robert-Alexandru1567ROU11N+9B3N+12B=13B4N8B2.518.520.56.001592+1.8
11Hale, Eduard1660ROU+10B4N6B=13N+14B8N12N2.517.518.04.001557-44.0
12Ros, Octav-Paul1648ROU+3N1B2B10N8NF+11B2.023.523.56.501573-14.2
13Paraschiv, Andrei-Cristian1674ROUFFF=11B=10N+14B6N2.09.59.53.001590-9.0
14Sandea, Dorin-Gheorghe1459ROUF=6N5B7B11N13N9B0.518.518.52.001290-14.4
15FIDE 422479690F3B7N9BFFF0.010.010.00.008540.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets