XXI Open de Primavera GROS XAKE Udaberriko Irekia Rondas 1-2

Open SwissStandard

75 players participated in this 2-round tournament, held from 18 Apr 2026 to 25 Apr 2026 in Donostia, Spain. 2 titled players from 5 federations. Top 10 Elo average was 2173, and top seed was Inigo Argandona Riveiro (🇪🇸 ESP, IM, 2330).

Unai Dorronsoro Arenas (🇪🇸 ESP, 1970) won with 2.0/2, ahead of Paulo Soto Avalos (2.0) and Jon Lertxundi Azpiazu (2.0).

The biggest upset came in round 2: Asier Ezkai Vicario (1530) beat Ion Arrieta Valero (1803), a +273-point gap.

Location

🇪🇸Donostia, Spain

Dates

18 Apr 2026 → 25 Apr 2026

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 2 rounds

Top seed

🇪🇸IMInigo Argandona Riveiro2330

Avg top 10

2,173

Participants

Titled players · 2

IM×1

FM×1

Federations · 5 represented

🇪🇸Spain×64

🇫🇷France×2

🇨🇴Colombia×1

🇨🇺Cuba×1

🇻🇪Venezuela×1

Top 3

🥇
Unai Dorronsoro Arenas
🇪🇸ESP·1970
2.0pts·2493perf+6.8
🥈
Paulo Soto Avalos
🇪🇸ESP·1989
2.0pts·2508perf+14.0
🥉
Jon Lertxundi Azpiazu
🇪🇸ESP·1900
2.0pts·2475perf+8.8

Grille américaine

#	Player	Elo	Fed	R1	R2	Pts	Bu C1	Bu	SB	Perf	Δ
1	Dorronsoro Arenas, Unai	1970	ESP	+24N	+22B	2.0	1.0	2.0	2.00	2493	+6.8
2	Soto Avalos, Paulo	1989	ESP	+29B	+18N	2.0	1.0	2.0	2.00	2508	+14.0
3	Lertxundi Azpiazu, Jon	1900	ESP	+26N	+19B	2.0	1.0	2.0	2.00	2475	+8.8
4	Reguillaga Elias, Manex	2062	ESP	+23N	+25B	2.0	1.0	2.0	2.00	2520	+4.8
5	Becerra, Juan DavidFM	2231	COL	+47N	+20B	2.0	1.0	1.5	1.50	2631	+3.2
6	Martinez Gil, Kilian	1909	ESP	+48B	+28N	2.0	1.0	1.5	1.50	2486	+8.8
7	Gimenez Lopez, Zuhaitz	2111	ESP	+58N	+27B	2.0	1.0	1.0	1.00	2564	+4.6
8	Rodriguez Hernandez, Jose Angel	2135	CUB	+54B	+21N	2.0	1.0	1.0	1.00	2586	+4.6
9	Rodriguez Vallejo, Julio	1846	ESP	+59N	+16B	2.0	1.0	1.0	1.00	2261	+1.8
10	Gerrikabeitia Uriarte, Antxoka	1741	ESP	+53N	+17B	2.0	1.0	1.0	1.00	2647	+12.8
11	Moreno Lazarev, Haritz	1896	ESP	+52N	+56B	2.0	0.0	0.0	0.00	2454	+16.4
12	Izagirre Alsua, Aritz	1866	ESP	+55N	+57B	2.0	0.0	0.0	0.00	2383	+6.4
13	Olaizola Ortega, Luis	2100	ESP	+31B	=14N	1.5	1.5	2.5	1.75	1952	-5.2
14	Rodriguez Alvarez, Hugo	1817	ESP	+30N	=13B	1.5	1.5	2.5	1.75	2100	+13.6
15	Reguillaga Otano, Juan	1731	ESP	+49N	=50B	1.5	0.5	1.0	0.75	1843	+3.0
16	Garcia De Salazar Bilbao, Jon	0	ESP	+35B	−9N	1.0	2.0	3.0	1.00	1809	0.0
17	Gattegno, Laurent	1847	FRA	+39B	−10N	1.0	2.0	3.0	1.00	1636	-10.2
18	Aguado Zabaleta, Felix	1783	ESP	+36N	−2B	1.0	2.0	3.0	1.00	1189	-4.8
19	Espin Laborde, Jesus Maria	1732	ESP	+37B	−3N	1.0	2.0	3.0	1.00	1100	-5.6
20	Parellada Elizalde, Jon	1823	ESP	+66B	−5N	1.0	2.0	2.0	0.00	1833	+0.2
21	Algans Sagues, Pau	1835	ESP	+60N	−8B	1.0	2.0	2.0	0.00	1789	-2.8
22	Ezkai Ormazabal, Inaki	1754	ESP	+65B	−1N	1.0	2.0	2.0	0.00	1170	-8.8
23	Villar Marcelino, Gorka	1634	ESP	−4B	+61N	1.0	2.0	2.0	0.00	1234	-1.6
24	Vallejo Perez, Urko	1631	ESP	−1B	+65N	1.0	2.0	2.0	0.00	1170	-2.4
25	Lin, Zhian	1778	ESP	+61B	−4N	1.0	2.0	2.0	0.00	1262	-6.4
26	Used Garzon, Ignacio Jesus	1618	ESP	−3B	+70N	1.0	2.0	2.0	0.00	1100	-6.4
27	Used Zabalegui, Iosu	1815	ESP	+73B	−7N	1.0	2.0	2.0	0.00	1311	-6.0
28	Alberdi Jauregi, Eneko	1753	ESP	+63N	−6B	1.0	2.0	2.0	0.00	1109	-5.8
29	Gabilondo Gil-Negrete, Oier	1632	ESP	−2N	+53B	1.0	2.0	2.0	0.00	1189	-4.4
30	FIDE 553008545	0	—	−14B	+64N	1.0	1.5	1.5	0.00	1759	0.0
31	Delbos, Jean-Louis	1650	FRA	−13N	+63B	1.0	1.5	1.5	0.00	1250	-1.6
32	Garcia Yuste, Ramon	1569	ESP	=33N	=47B	1.0	1.0	1.5	0.75	1783	+20.8
33	Sanchez Merino, Christian	1888	ESP	=32B	=51N	1.0	1.0	1.5	0.75	1562	-15.0
34	Argandona Riveiro, InigoIM	2330	ESP	F	+38N	1.0	1.0	1.0	1.00	2730	+0.8
35	Arroyo Rodriguez, David	1771	ESP	−16N	+60B	1.0	1.0	1.0	0.00	2243	+2.6
36	Barrere de la Fuente, Xuhar	0	ESP	−18B	+54N	1.0	1.0	1.0	0.00	1727	0.0
37	Marco Romero, Rufino	0	ESP	−19N	+52B	1.0	1.0	1.0	0.00	1659	0.0
38	Lazkano Gaite, Tomas	1706	ESP	+62N	−34B	1.0	1.0	1.0	0.00	1306	-1.6
39	Yurramendi Sarasola, Xabier	1531	ESP	−17N	+62B	1.0	1.0	1.0	0.00	1047	-2.6
40	Odriozola Coscolin, Dani	2177	ESP	F	+74B	1.0	0.0	0.0	0.00	2577	+3.2
41	Etxeberria Garcia, Tomas	1791	ESP	F	+67B	1.0	0.0	0.0	0.00	2320	+3.4
42	Bayona Jaime, Antonio	1740	ESP	F	+71B	1.0	0.0	0.0	0.00	2252	+3.2
43	Odriozola Coscolin, Alex	2224	ESP	F	+69N	1.0	0.0	0.0	0.00	2624	+1.6
44	Ezkai Vicario, Asier	1530	ESP	F	+68B	1.0	0.0	0.0	0.00	2603	+33.2
45	Munoz Avila, Jose Luis	2264	ESP	+64B	F	1.0	0.0	0.0	0.00	2664	+1.6
46	Ontiveros Acuna, Miguel Angel	2093	VEN	F	+72B	1.0	0.0	0.0	0.00	2493	+1.6
47	Iglesias Liroz, Joseba	1678	ESP	−5B	=32N	0.5	2.0	3.0	0.50	1631	-9.2
48	Elustondo Otaegui, Aitor	1619	ESP	−6N	=49B	0.5	2.0	2.5	0.25	1109	-3.0
49	FIDE 553063694	0	—	−15B	=48N	0.5	1.5	2.0	0.25	1481	0.0
50	Esnaola Gaston, Fernando	1843	ESP	F	=15N	0.5	1.5	1.5	0.75	1730	-3.0
51	Gorostarzu Sanchez, Ekhi	1554	ESP	F	=33B	0.5	1.0	1.0	0.50	1888	+15.2
52	Koroteev, Mikhail	1586	ESP	−11B	−37N	0.0	2.0	3.0	0.00	1097	-5.6
53	FIDE 22290958	0	—	−10B	−29N	0.0	2.0	3.0	0.00	887	0.0
54	Urcelay Crucelaegui, Zigor	1671	ESP	−8N	−36B	0.0	2.0	3.0	0.00	1271	-1.6
55	Rodriguez Alvarez, Aian	1557	ESP	−12B	F	0.0	2.0	2.0	0.00	1066	-5.6
56	Zubia Aramburu, Mikel	1722	ESP	F	−11N	0.0	2.0	2.0	0.00	1097	-5.4
57	Zubiria Mohedano, Aner	1608	ESP	F	−12N	0.0	2.0	2.0	0.00	1066	-7.2
58	Onate del Moral, Daniel	1663	ESP	−7B	F	0.0	2.0	2.0	0.00	1263	-1.6
59	Infante Arranz, Sergio	1461	ESP	−9B	F	0.0	2.0	2.0	0.00	1046	-3.6
60	Alvarez Algorta, Aritz	1446	ESP	−21B	−35N	0.0	1.0	2.0	0.00	1004	-8.4
61	Benegas Urabayen, Pablo	0	ESP	−25N	−23B	0.0	1.0	2.0	0.00	906	0.0
62	FIDE 553054881	0	—	−38B	−39N	0.0	1.0	2.0	0.00	818	0.0
63	Gutierrez Irisarri, Diego	0	ESP	−28B	−31N	0.0	1.0	2.0	0.00	902	-14.0
64	Lanas Urquiola, Mikel	1700	ESP	−45N	−30B	0.0	1.0	2.0	0.00	1300	-1.6
65	FIDE 553056540	0	—	−22N	−24B	0.0	1.0	2.0	0.00	893	0.0
66	Aldanondo Yang, Iker	1443	ESP	−20N	F	0.0	1.0	1.0	0.00	1023	-3.6
67	Vazquez Altuna, Alfonso	1519	ESP	F	−41N	0.0	1.0	1.0	0.00	991	-6.8
68	Arrieta Valero, Ion	1803	ESP	F	−44N	0.0	1.0	1.0	0.00	733	-16.6
69	Saenz Zabala, Juan Ignacio	1695	ESP	F	−43B	0.0	1.0	1.0	0.00	1295	-1.6
70	FIDE 553060407	0	—	−?N	−26B	0.0	1.0	1.0	0.00	880	0.0
71	Garate Romero, Naia	1452	ESP	F	−42N	0.0	1.0	1.0	0.00	940	-6.4
72	Campos Jimenez, Enrique	1571	ESP	F	−46N	0.0	1.0	1.0	0.00	1171	-1.6
73	Artetxe Pinto, Kasi	0	ESP	−27N	F	0.0	1.0	1.0	0.00	1016	0.0
74	Legorburu Echeveste, Ekai	1619	ESP	F	−40N	0.0	1.0	1.0	0.00	1219	-3.2
75	Almandoz Zapiain, Santiago	0	ESP	F	−?N	0.0	0.0	0.0	0.00	910	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Ezkai Vicario, AsierESP
+33.2
1.0 pts · #23
2Garcia Yuste, RamonESP
+20.8
1.0 pts · #26
3Moreno Lazarev, HaritzESP
+16.4
2.0 pts · #2

Top rating losers

1Arrieta Valero, IonESP
-16.6
0.0 pts · #53
2Sanchez Merino, ChristianESP
-15.0
1.0 pts · #31
3Gutierrez Irisarri, DiegoESP
-14.0
0.0 pts · #65

Biggest upsets

R2+273 Elo gap
Ezkai Vicario, Asier1530 beat Arrieta Valero, Ion1803
R2+106 Elo gap
Gerrikabeitia Uriarte, Antxoka1741 beat Gattegno, Laurent1847