Amateur Chess Open 10th ed.

Open SwissStandard

86 players participated in this 6-round tournament, held from 03 Mar 2026 to 04 Mar 2026 in Bucuresti, Romania. 3 federations represented. Top 10 Elo average was 1750, and top seed was Constantin-Gabriel Ungureanu (🇷🇴 ROU, 1792).

Constantin-Gabriel Ungureanu (🇷🇴 ROU, 1792) won with 5.5/6, ahead of Ieremia Nicolaescu (5.0) and Aaron-Mathias Dragoi (5.0). Ungureanu shared the lead from round 5 and broke clear in the final round.

The biggest upset came in round 1: Radu-Catalin Bobes (1417) beat Teodor-Spiridon David (1711), a +294-point gap.

Location

🇷🇴Bucuresti, Romania

Dates

03 Mar 2026 → 04 Mar 2026

Time control

Standard: 30 minutes for game with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇷🇴Constantin-Gabriel Ungureanu1792

Avg top 10

1,750

Participants

Federations · 3 represented

🇷🇴Romania×67

🇨🇦Canada×1

🇵🇹Portugal×1

Top 3

🥇
Constantin-Gabriel Ungureanu
🇷🇴ROU·1792
5.5pts·2060perf+29.6
🥈
Ieremia Nicolaescu
🇷🇴ROU
5.0pts·1955perf+39.2
🥉
Aaron-Mathias Dragoi
🇷🇴ROU·1671
5.0pts·2348perf+53.6

How it unfolded

Top 6 · 6 rounds

Constantin-Gabriel Ungureanu led from R6; +0.5-point edge over the runner-up.

Co-leaders

Ungureanu5.5Nicolaescu5Anghenie5Vintila5Dragoi5Marinache4.5— ex-leaders:Neaguled R4, #11

R6 · LEADER CHANGE04 Mar

Constantin-Gabriel Ungureanu takes the sole lead (5.5/6).

WIN STREAKS · 2 top finishers

Constantin-Gabriel Ungureanu 3 wins (R4–R6)Ieremia Nicolaescu 3 wins (R1–R3)

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Ungureanu, Constantin-Gabriel	1792	ROU	+56B	+26N	=31B	+23N	+6N	+7B	5.5	19.0	21.5	20.00	2060	+29.6
2	Nicolaescu, Ieremia	0	ROU	+3N	+17B	+53N	−6B	+23N	+16B	5.0	21.0	23.5	19.00	1955	+39.2
3	Dragoi, Aaron-Mathias	1671	ROU	−2B	+58N	+35B	+44N	+32B	+18N	5.0	18.0	20.0	15.00	2348	+53.6
4	Anghenie, Toma-Horia	1753	ROU	+35B	+54N	=23B	+48N	+24B	=6N	5.0	17.5	20.0	16.00	1899	+39.6
5	Vintila, Ionut-Vicentiu	1601	ROU	+63B	−12N	+36B	+34N	+25B	+11N	5.0	17.5	19.5	15.50	1856	+32.2
6	Neagu, Andrei	1689	ROU	+41B	+28N	+12B	+2N	−1B	=4B	4.5	23.0	26.0	18.00	1805	+33.2
7	Marinache, Luca-Marian	1771	ROU	+51B	=15N	+42B	+13N	+8B	−1N	4.5	21.0	23.5	16.00	1837	+20.8
8	Enache, George-Alexandru	1734	ROU	+36B	+32N	=13B	+15N	−7N	+24B	4.5	19.0	22.0	15.50	1811	+12.0
9	Moraru, Stefan-Robert	1634	ROU	+82N	+62B	−14N	+40B	+12B	=10N	4.5	17.5	18.5	12.25	1705	+10.4
10	Ghita, Mihai I.	1507	ROU	+75B	−13N	+79B	+39N	+31B	=9B	4.5	15.5	16.5	10.25	1779	+57.2
11	Dumitrascu, Daniel	1782	ROU	+19N	−16B	+64N	+20B	+14N	−5B	4.0	21.0	23.0	14.00	1706	-10.0
12	Mesca, Liviu-Stefanita	1757	ROU	+43N	+5B	−6N	+37B	−9N	+29B	4.0	20.5	23.5	14.50	1725	-5.0
13	Serbanoiu, Constantin	1680	ROU	+60N	+10B	=8N	−7B	=28B	+35N	4.0	20.0	22.0	13.50	1684	+1.4
14	Nastase, Stefan	1719	ROU	+45B	+29N	+9B	=24N	−11B	=15N	4.0	19.5	22.5	14.75	1743	+3.8
15	Moroianu, George	1605	ROU	+76N	=7B	+16N	−8B	+53N	=14B	4.0	19.5	20.5	11.75	1790	+24.4
16	Paraipan, Mihai-Gabriel	1607	ROU	+72B	+11N	−15B	+55N	+33B	−2N	4.0	18.5	19.5	10.50	1846	+41.6
17	Constantin, Radu	1683	ROU	+38B	−2N	+51B	−18N	+42B	+44N	4.0	18.0	20.5	11.50	1731	+8.8
18	Ratea, Otilia-Elena	1553	ROU	F	+72N	+27B	+17B	+22N	−3B	4.0	18.0	19.0	12.50	1790	+36.4
19	Petroff, Mihai-Marcilian	1490	ROU	−11B	+63N	+26B	−25N	+58B	+31N	4.0	16.0	18.0	10.50	1700	+42.0
20	Dumitrescu, Matei	1589	ROU	+83B	−33N	+41B	−11N	+45B	+39N	4.0	16.0	16.0	9.00	1684	+28.4
21	Dragusin, Calin-Ioan	1748	ROU	=55N	+59B	−22N	=46B	+40N	+32B	4.0	15.5	17.5	10.75	1612	-32.4
22	Szatmary, Alex	1638	CAN	=71B	+74N	+21B	=31N	−18B	+38N	4.0	15.5	16.5	10.25	1711	+7.6
23	Voicu, Stefan	1684	ROU	+65N	+46B	=4N	−1B	−2B	+51N	3.5	21.0	23.0	10.00	1739	+14.4
24	Athyridis, Aristotelis	1625	ROU	+58B	+69N	+39B	=14B	−4N	−8N	3.5	18.5	20.0	8.50	1644	+0.8
25	David, Teodor-Spiridon	1711	ROU	−34N	+68B	+56N	+19B	−5N	=30N	3.5	18.0	20.0	10.25	1513	-50.4
26	Marinescu, Rares	1608	ROU	+77N	−1B	−19N	+52N	+55B	=27B	3.5	18.0	19.0	7.75	1463	-24.4
27	Marinescu, Antonie	0	ROU	−37N	+73B	−18N	+36N	+43B	=26N	3.5	16.5	17.5	8.75	1530	0.0
28	Voicu, Matei	1554	ROU	+70B	−6B	F	+57N	=13N	+33B	3.5	15.5	15.5	9.00	1701	+22.4
29	Mihalache, Iulian	1594	ROU	+85N	−14B	+81N	=53B	+48B	−12N	3.5	14.5	14.5	5.25	1656	+16.4
30	Tudor, George S.	1550	ROU	+52B	−31N	+69B	−33N	+61N	=25B	3.5	14.0	15.5	7.75	1582	+2.4
31	Oprea, Sorin-Andrei	1688	ROU	+47N	+30B	=1N	=22B	−10N	−19B	3.0	21.5	24.5	11.25	1566	-38.4
32	Marinescu, Octavian	1598	ROU	+57B	−8B	+45N	+59B	−3N	−21N	3.0	19.0	21.0	7.50	1452	-14.8
33	Milea, Florian	1733	ROU	+40N	+20B	−50N	+30B	−16N	−28N	3.0	18.0	21.0	10.50	1579	-24.2
34	Bobes, Radu-Catalin	1417	ROU	+25B	−48N	+66B	−5B	=37N	=42N	3.0	17.5	19.5	8.50	1614	+60.0
35	Bojica, Victor	1481	ROU	−4N	+76B	−3N	+71B	+59N	−13B	3.0	17.5	18.5	4.50	902	-27.2
36	Dragomir, Andrei D.	1453	ROU	−8N	+67B	−5N	−27B	+78N	+59B	3.0	17.0	18.0	5.00	871	-15.2
37	Stefanescu, Andrada-Maria	1565	ROU	+27B	−39N	+61B	−12N	=34B	=41N	3.0	16.5	18.5	8.50	1495	-20.4
38	FIDE 42233500	0	—	−17N	−75B	+67N	+49N	+46B	−22B	3.0	16.0	17.0	8.00	1595	0.0
39	Neagu, Mihai-Adrian	1713	ROU	+73N	+37B	−24N	−10B	+74N	−20B	3.0	16.0	17.0	5.00	1527	-52.4
40	Dumitru, Mircea-Mihai	1450	ROU	−33B	+83N	+54B	−9N	−21B	+66N	3.0	16.0	16.0	4.50	1593	+33.2
41	Popescu, Luca-Alexandru	1412	ROU	−6N	+70B	−20N	=69B	+52N	=37B	3.0	15.5	17.0	6.25	1339	-9.6
42	Vilcu, Cristian-Marian	1565	ROU	=68N	+84B	−7N	+62B	−17N	=34B	3.0	15.5	15.5	4.50	1351	-32.0
43	Vrabie, Iona-Mihail	1482	ROU	−12B	=57N	=47B	+72N	−27N	+60B	3.0	15.0	16.0	5.75	1393	-10.8
44	Constandache, Darius-Andrei	1545	ROU	+80N	−50B	+75N	−3B	+65N	−17B	3.0	15.0	16.0	4.00	1420	-25.6
45	Oprea, Luca-Stefan	1431	ROU	−14N	+85B	−32B	+70N	−20N	+64B	3.0	14.5	14.5	3.50	1393	0.0
46	Grigore, Melania-Cristina	1529	ROU	+79B	−23N	=52B	=21N	−38N	+74B	3.0	14.0	15.0	5.25	1632	+15.6
47	Mirzac, Patric-Florentin	1410	ROU	−31B	−52N	=43N	+84B	+62N	=54B	3.0	13.0	13.0	4.75	1468	+7.6
48	Rautu, Andrei	1651	POR	+86N	+34B	F	−4B	−29N	+69B	3.0	13.0	13.0	4.50	1464	-14.6
49	Satmari, Radu-Valentin	1518	ROU	−62N	+60B	−59N	−38B	+83N	+65B	3.0	11.0	11.0	4.00	2205	+13.6
50	Robescu, Andrei-Georgian	1687	ROU	+61B	+44N	+33B	F	F	F	3.0	8.0	8.0	8.00	2406	+23.6
51	Grigore, Miruna-Ioana	1487	ROU	−7N	+77B	−17N	=60B	+57N	−23B	2.5	16.5	17.5	4.50	915	-23.2
52	Pasoveanu, Silvian-Florin	0	ROU	−30N	+47B	=46N	−26B	−41B	+73N	2.5	16.0	17.0	5.50	1432	0.0
53	Vladescu, Ovidiu-Viorel	1712	ROU	+81B	+66N	−2B	=29N	−15B	F	2.5	15.5	15.5	4.75	1649	-6.6
54	Matei, Gabriel-Sorin	1599	ROU	+67N	−4B	−40N	−61B	+72N	=47N	2.5	15.0	16.0	4.50	1216	-73.6
55	Tuduruta, Ovidiu	1461	ROU	=21B	+71N	F	−16B	−26N	+58N	2.5	15.0	15.0	5.50	1397	-10.8
56	Haiducu, Razvan-Cristian	1496	ROU	−1N	+82B	−25B	F	=60N	+61N	2.5	14.0	14.0	4.00	1554	+6.4
57	Danut, Lara-Cristina	0	ROU	−32N	=43B	+84N	−28B	−51B	+70N	2.5	13.5	13.5	3.00	1206	0.0
58	Valeanu, Eduard-Antonio	0	ROU	−24N	−3B	+78N	+64B	−19N	−55B	2.0	17.0	18.0	3.00	1305	0.0
59	FIDE 42255007	0	—	+64B	−21N	+49B	−32N	−35B	−36N	2.0	16.0	18.0	5.00	1410	0.0
60	Perieteanu, Eugen	0	ROU	−13B	−49N	+63B	=51N	=56B	−43N	2.0	15.0	17.0	4.50	1292	0.0
61	Valahu, Dan	1402	ROU	−50N	+80B	−37N	+54N	−30B	−56B	2.0	14.5	15.5	3.50	1342	-48.0
62	FIDE 42247381	0	—	+49B	−9N	F	−42N	−47B	+72B	2.0	14.5	14.5	4.00	1349	0.0
63	FIDE 42254515	0	—	−5N	−19B	−60N	+80B	−64N	+78B	2.0	14.0	15.0	2.00	713	0.0
64	Calugareanu, Kevin Gabriel	1502	ROU	−59N	+86B	−11B	−58N	+63B	−45N	2.0	13.0	13.0	2.00	802	-26.0
65	Grigore, Stefan-Petru	1401	ROU	−23B	−79N	+76B	+66N	−44B	−49N	2.0	12.5	13.5	3.00	1391	-3.6
66	Mitran, Radu-Mihai	1573	ROU	+78N	−53B	−34N	−65B	+67N	−40B	2.0	12.5	13.5	3.00	697	-96.4
67	Danut, Darius-Daniel	0	ROU	−54B	−36N	−38B	+77N	−66B	+83N	2.0	11.5	11.5	1.00	729	0.0
68	FIDE 42264740	0	—	=42B	−25N	−74B	−73N	+84N	=71B	2.0	10.0	10.0	2.25	1217	0.0
69	Ousta-Yaakov, Omer	0	ROU	F	−24B	−30N	=41N	+73B	−48N	1.5	17.0	18.0	2.50	1385	0.0
70	FIDE 42265070	0	—	−28N	−41N	+77B	−45B	=71N	−57B	1.5	13.5	14.5	1.75	664	0.0
71	Chiriazi, Teodor-Mihai-Daniel	0	ROU	=22N	−55B	F	−35N	=70B	=68N	1.5	13.0	13.0	3.75	1262	0.0
72	FIDE 42261716	0	—	−16N	−18B	+80N	−43B	−54B	−62N	1.0	15.5	16.5	1.00	775	0.0
73	Panaite, Radu-Stefan	1428	ROU	−39B	−27N	F	+68B	−69N	−52B	1.0	12.5	12.5	2.00	908	-6.0
74	Ioan, Nicolae	1443	ROU	F	−22B	+68N	F	−39B	−46N	1.0	12.0	12.0	2.00	826	-34.0
75	Visan, George-Cristian	0	ROU	−10N	+38N	−44B	F	F	F	1.0	11.5	11.5	3.00	726	0.0
76	FIDE 42264880	0	—	−15B	−35N	−65N	−78B	F	+80B	1.0	11.0	11.0	1.00	701	0.0
77	FIDE 42265045	0	—	−26B	−51N	−70N	−67B	−80N	+84B	1.0	10.5	10.5	0.00	741	0.0
78	FIDE 42264944	0	—	−66B	−81N	−58B	+76N	−36B	−63N	1.0	10.0	11.0	1.00	672	0.0
79	FIDE 42265096	0	—	−46N	+65B	−10N	F	F	F	1.0	9.5	9.5	2.00	1356	0.0
80	FIDE 42261929	0	—	−44B	−61N	−72B	−63N	+77B	−76N	1.0	9.0	10.0	1.00	741	0.0
81	Rinescu, Maria	1423	ROU	−53N	+78B	−29B	F	F	F	1.0	8.0	8.0	1.00	855	-17.6
82	FIDE 42246130	0	—	−9B	−56N	+83B	F	F	F	1.0	7.0	7.0	0.00	781	0.0
83	FIDE 42265061	0	—	−20N	−40B	−82N	F	−49B	−67B	0.0	13.0	13.0	0.00	718	0.0
84	FIDE 42265088	0	—	F	−42N	−57B	−47N	−68B	−77N	0.0	11.5	11.5	0.00	692	0.0
85	FIDE 42265053	0	—	−29B	−45N	F	F	F	F	0.0	6.5	6.5	0.00	707	0.0
86	FIDE 42249171	0	—	−48B	−64N	F	F	F	F	0.0	5.0	5.0	0.00	748	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Bobes, Radu-CatalinROU
+60.0
3.0 pts · #22
2Ghita, Mihai I.ROU
+57.2
4.5 pts · #26
3Dragoi, Aaron-MathiasROU
+53.6
5.0 pts · #9

Top rating losers

1Mitran, Radu-MihaiROU
-96.4
2.0 pts · #85
2Matei, Gabriel-SorinROU
-73.6
2.5 pts · #58
3Neagu, Mihai-AdrianROU
-52.4
3.0 pts · #15

Biggest upsets

R1+294 Elo gap
Bobes, Radu-Catalin1417 beat David, Teodor-Spiridon1711
R4+206 Elo gap
Ghita, Mihai I.1507 beat Neagu, Mihai-Adrian1713
R6+198 Elo gap
Petroff, Mihai-Marcilian1490 beat Oprea, Sorin-Andrei1688