XXI Open de Primavera GROS XAKE Udaberriko Irekia Rondas 3-6
Open SwissStandard
79 players participated in this 6-round tournament, held from 02 May 2026 to 23 May 2026 in Donostia, Spain. 2 titled players from 5 federations. Top 10 Elo average was 2177, and top seed was Inigo Argandona Riveiro (🇪🇸 ESP, IM, 2333).
Inigo Argandona Riveiro (🇪🇸 ESP, IM, 2333) won with 3.5/6, ahead of Manex Reguillaga Elias (3.0) and Juan David Becerra (3.0). Argandona Riveiro clinched sole first place in the final round.
The biggest upset came in round 6: Eneko Alberdi Jauregi (1753) beat Unai Dorronsoro Arenas (1970), a +217-point gap.
Location
🇪🇸Donostia, Spain
Dates
02 May 2026 → 23 May 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Titled players · 2
IM×1
FM×1
Federations · 5 represented
🇪🇸Spain×68
🇫🇷France×2
🇨🇴Colombia×1
🇨🇺Cuba×1
🇻🇪Venezuela×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsIM Inigo Argandona Riveiro led from R6; +0.5-point edge over the runner-up. Title race converged from 12 co-leaders at R4 to 1 by R6.
Co-leaders
81
81
26
12
2
1
R6–R6 · LEAD HELD
IM Inigo Argandona Riveiro held the sole lead from R6 through R6 without losing it.
R4–R6 · WIN STREAK
Eneko Alberdi Jauregi won 3 in a row (R4–R6).
R4 · LATE SURGE
Eneko Alberdi Jauregi was #17 at R4, climbed to #3 over the final stretch.
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Argandona Riveiro, InigoIM | 2333 | ESP | F | F | +40B | +38N | =2B | +5B | 3.5 | 9.0 | 9.0 | 7.50 | 2321 | -0.4 |
| 2 | Reguillaga Elias, Manex | 2061 | ESP | F | F | +42N | +14B | =1N | =3N | 3.0 | 10.5 | 10.5 | 7.25 | 2343 | +28.8 |
| 3 | Becerra, Juan DavidFM | 2262 | COL | F | F | +18N | =13B | +21N | =2B | 3.0 | 9.5 | 9.5 | 6.75 | 2233 | -1.4 |
| 4 | Lin, Zhian | 1778 | ESP | F | F | +39B | −6N | +28B | +10N | 3.0 | 9.5 | 9.5 | 6.50 | 1956 | +32.8 |
| 5 | Zuloaga Erauskin, Markel | 2012 | ESP | F | F | +56B | +22N | +7B | −1N | 3.0 | 9.5 | 9.5 | 6.00 | 2099 | +10.0 |
| 6 | Odriozola Coscolin, Alex | 2197 | ESP | F | F | F | +4B | +9N | +18B | 3.0 | 8.0 | 8.0 | 8.00 | 2663 | +7.6 |
| 7 | Algans Sagues, Pau | 1895 | ESP | F | F | +45N | +52B | −5N | +44B | 3.0 | 7.5 | 7.5 | 4.50 | 1983 | +18.8 |
| 8 | Legorburu Echeveste, Ekai | 1620 | ESP | F | F | +58B | +15N | −48B | +24N | 3.0 | 7.0 | 7.0 | 5.50 | 1884 | +41.6 |
| 9 | Sanchez Merino, Christian | 1882 | ESP | F | F | +62B | +47N | −6B | +40N | 3.0 | 7.0 | 7.0 | 4.00 | 2006 | +12.0 |
| 10 | Lanas Urquiola, Mikel | 1700 | ESP | F | F | +59N | +57B | +30N | −4B | 3.0 | 7.0 | 7.0 | 4.00 | 1686 | -0.2 |
| 11 | Ontiveros Acuna, Miguel Angel | 2093 | VEN | F | F | +41N | +73B | =13N | =14B | 3.0 | 6.5 | 6.5 | 4.00 | 2204 | +12.8 |
| 12 | Alberdi Jauregi, Eneko | 1753 | ESP | F | F | −20N | +39B | +31B | +73N | 3.0 | 5.5 | 5.5 | 3.50 | 1872 | +12.2 |
| 13 | Gimenez Lopez, Zuhaitz | 2199 | ESP | F | F | +19N | =3N | =11B | =16B | 2.5 | 10.5 | 10.5 | 6.25 | 2169 | -1.4 |
| 14 | Rodriguez Hernandez, Jose Angel | 2135 | CUB | F | F | +23B | −2N | +42B | =11N | 2.5 | 9.5 | 9.5 | 5.00 | 2080 | -5.2 |
| 15 | Arroyo Rodriguez, David | 1746 | ESP | F | F | =70N | −8B | +53N | +45B | 2.5 | 6.5 | 6.5 | 3.25 | 1624 | -9.8 |
| 16 | Odriozola Coscolin, Dani | 2122 | ESP | F | F | F | +46N | +23B | =13N | 2.5 | 6.0 | 6.0 | 4.75 | 2241 | +18.4 |
| 17 | Esnaola Gaston, Fernando | 1843 | ESP | F | F | −43B | +56N | =40B | +26N | 2.5 | 6.0 | 6.0 | 3.75 | 1791 | -5.4 |
| 18 | Martinez Gil, Kilian | 1909 | ESP | F | F | −3B | +25N | +26B | −6N | 2.0 | 10.0 | 10.0 | 4.00 | 1972 | +4.6 |
| 19 | Moreno Lazarev, Haritz | 1820 | ESP | F | F | −13B | −26N | +24B | +27N | 2.0 | 8.5 | 8.5 | 4.00 | 1856 | +3.6 |
| 20 | Zubiria Mohedano, Aner | 1608 | ESP | F | F | +12B | −29B | −41N | +57B | 2.0 | 7.5 | 7.5 | 4.00 | 1695 | +17.6 |
| 21 | Soto Avalos, Paulo | 1989 | ESP | F | F | =38B | +43N | −3B | =48N | 2.0 | 7.5 | 7.5 | 3.00 | 1927 | -13.6 |
| 22 | Aguado Zabaleta, Felix | 1783 | ESP | F | F | +60N | −5B | =47B | =25N | 2.0 | 7.5 | 7.5 | 2.75 | 1757 | -3.0 |
| 23 | Lertxundi Azpiazu, Jon | 1915 | ESP | F | F | −14N | +44B | −16N | +67B | 2.0 | 7.5 | 7.5 | 2.50 | 1940 | +2.4 |
| 24 | Urcelay Crucelaegui, Zigor | 1671 | ESP | F | F | +65N | +49B | −19N | −8B | 2.0 | 7.5 | 7.5 | 2.50 | 1497 | -13.4 |
| 25 | Zubia Aramburu, Mikel | 1722 | ESP | F | F | +57B | −18B | =50N | =22B | 2.0 | 6.5 | 6.5 | 2.75 | 1671 | -5.0 |
| 26 | Lazkano Gaite, Tomas | 1706 | ESP | F | F | +75N | +19B | −18N | −17B | 2.0 | 6.5 | 6.5 | 2.00 | 1732 | +2.0 |
| 27 | Gattegno, Laurent | 1847 | FRA | F | F | F | +36B | +35N | −19B | 2.0 | 6.0 | 6.0 | 4.00 | 1877 | +2.4 |
| 28 | Elustondo Otaegui, Aitor | 1618 | ESP | F | F | =49N | +77B | −4N | =39B | 2.0 | 6.0 | 6.0 | 1.50 | 1473 | -7.6 |
| 29 | Parellada Elizalde, Jon | 1823 | ESP | F | F | +51B | +20N | F | −33B | 2.0 | 5.5 | 5.5 | 3.50 | 1905 | +6.2 |
| 30 | FIDE 22290958 | 0 | — | F | F | +74N | +54B | −10B | F | 2.0 | 4.5 | 4.5 | 1.50 | 1546 | 0.0 |
| 31 | Koroteev, Mikhail | 1585 | ESP | F | F | +61B | F | −12N | +78B | 2.0 | 4.0 | 4.0 | 1.00 | 953 | -11.2 |
| 32 | Munoz Avila, Jose Luis | 2264 | ESP | F | F | F | +34N | F | +38B | 2.0 | 3.5 | 3.5 | 3.50 | 2664 | +3.2 |
| 33 | Olaizola Ortega, Luis | 2100 | ESP | F | F | F | +41B | F | +29N | 2.0 | 3.5 | 3.5 | 3.50 | 2582 | +5.4 |
| 34 | Used Zabalegui, Iosu | 1778 | ESP | F | F | +69B | −32B | +64N | F | 2.0 | 3.5 | 3.5 | 1.50 | 1933 | +20.4 |
| 35 | De la Cruz Esteibarlanda, Ametz | 1769 | ESP | F | F | F | +78N | −27B | +47N | 2.0 | 3.5 | 3.5 | 1.50 | 1755 | -1.2 |
| 36 | Saenz Zabala, Juan Ignacio | 1668 | ESP | F | F | +71N | −27N | +70B | F | 2.0 | 3.0 | 3.0 | 1.00 | 1787 | +9.2 |
| 37 | Campos Jimenez, Enrique | 1577 | ESP | F | F | +55B | F | F | +63N | 2.0 | 2.5 | 2.5 | 2.50 | 2521 | +13.8 |
| 38 | Rodriguez Vallejo, Julio | 1846 | ESP | F | F | =21N | −1B | +43B | −32N | 1.5 | 9.0 | 9.0 | 2.50 | 1968 | +7.8 |
| 39 | Gorostarzu Sanchez, Ekhi | 1554 | ESP | F | F | −4N | −12N | +65B | =28N | 1.5 | 9.0 | 9.0 | 2.00 | 1557 | -1.6 |
| 40 | Gallego Jimenez, Manuel | 1742 | ESP | F | F | −1N | +79B | =17N | −9B | 1.5 | 9.0 | 9.0 | 1.25 | 1683 | -5.0 |
| 41 | Gerrikabeitia Uriarte, Antxoka | 1741 | ESP | F | F | −11B | −33N | +20B | =42N | 1.5 | 8.5 | 8.5 | 2.75 | 1831 | +5.8 |
| 42 | Izagirre Alsua, Aritz | 1871 | ESP | F | F | −2B | +50N | −14N | =41B | 1.5 | 8.5 | 8.5 | 2.25 | 1780 | -9.8 |
| 43 | Bayona Jaime, Antonio | 1740 | ESP | F | F | +17N | −21B | −38N | =51B | 1.5 | 7.5 | 7.5 | 3.25 | 1741 | -1.2 |
| 44 | Reguillaga Otano, Juan | 1750 | ESP | F | F | =46B | −23N | +66B | −7N | 1.5 | 7.5 | 7.5 | 1.75 | 1703 | -5.6 |
| 45 | Villar Marcelino, Gorka | 1634 | ESP | F | F | −7B | +69N | =46B | −15N | 1.5 | 7.5 | 7.5 | 1.25 | 1663 | +1.8 |
| 46 | Etxeberria Garcia, Tomas | 1791 | ESP | F | F | =44N | −16B | =45N | =52B | 1.5 | 7.0 | 7.0 | 2.25 | 1730 | -8.6 |
| 47 | Onate del Moral, Daniel | 1663 | ESP | F | F | +77N | −9B | =22N | −35B | 1.5 | 7.0 | 7.0 | 1.00 | 1538 | -8.4 |
| 48 | Rodriguez Alvarez, Hugo | 1860 | ESP | F | F | F | F | +8N | =21B | 1.5 | 5.0 | 5.0 | 4.00 | 1998 | +14.8 |
| 49 | Almandoz Zapiain, Santiago | 0 | ESP | F | F | =28B | −24N | +76B | −60N | 1.5 | 5.0 | 5.0 | 1.00 | 1367 | 0.0 |
| 50 | Yurramendi Sarasola, Xabier | 1530 | ESP | F | F | +63N | −42B | =25B | F | 1.5 | 4.5 | 4.5 | 2.00 | 1771 | +17.6 |
| 51 | Gabilondo Gil-Negrete, Oier | 1632 | ESP | F | F | −29N | F | +56B | =43N | 1.5 | 4.5 | 4.5 | 1.75 | 1720 | +14.0 |
| 52 | Garcia Lopez, Pedro 2015 | 1762 | ESP | F | F | F | −7N | +75B | =46N | 1.5 | 4.5 | 4.5 | 0.75 | 1650 | -11.2 |
| 53 | FIDE 553056540 | 0 | — | F | F | F | +58N | −15B | =69N | 1.5 | 4.0 | 4.0 | 1.25 | 1465 | 0.0 |
| 54 | Garate Romero, Naia | 1435 | ESP | F | F | F | −30N | =59B | +74B | 1.5 | 4.0 | 4.0 | 0.50 | 1636 | +20.8 |
| 55 | FIDE 553063694 | 0 | — | F | F | −37N | F | =71B | +58B | 1.5 | 3.5 | 3.5 | 1.25 | 1356 | 0.0 |
| 56 | Ezkai Vicario, Asier | 1596 | ESP | F | F | −5N | −17B | −51N | +79B | 1.0 | 7.0 | 7.0 | 0.00 | 1024 | -28.8 |
| 57 | Infante Arranz, Sergio | 1461 | ESP | F | F | −25N | −10N | +77B | −20N | 1.0 | 7.0 | 7.0 | 0.00 | 877 | -27.2 |
| 58 | Artetxe Pinto, Kasi | 0 | ESP | F | F | −8N | −53B | +74B | −55N | 1.0 | 6.0 | 6.0 | 0.00 | 1532 | 0.0 |
| 59 | Aldanondo Yang, Iker | 1443 | ESP | F | F | −10B | F | =54N | =72B | 1.0 | 5.0 | 5.0 | 1.00 | 1375 | -7.6 |
| 60 | Vallejo Perez, Urko | 1631 | ESP | F | F | −22B | F | −68N | +49B | 1.0 | 4.5 | 4.5 | 1.50 | 993 | -11.4 |
| 61 | Benegas Urabayen, Pablo | 0 | ESP | F | F | −31N | F | +69B | −66N | 1.0 | 3.5 | 3.5 | 0.50 | 1445 | 0.0 |
| 62 | Delbos, Jean-Louis | 1650 | FRA | F | F | −9N | F | +72B | F | 1.0 | 3.5 | 3.5 | 0.50 | 1082 | -4.2 |
| 63 | Espin Laborde, Jesus Maria | 1721 | ESP | F | F | −50B | F | +79N | −37B | 1.0 | 3.5 | 3.5 | 0.00 | 754 | -28.8 |
| 64 | Iglesias Liroz, Joseba | 1678 | ESP | F | F | F | F | −34B | +75N | 1.0 | 3.5 | 3.5 | 0.00 | 978 | -14.4 |
| 65 | Gutierrez Irisarri, Diego | 1426 | ESP | F | F | −24B | F | −39N | +76N | 1.0 | 3.5 | 3.5 | 0.00 | 813 | -21.2 |
| 66 | Rodriguez Alvarez, Aian | 1557 | ESP | F | F | F | F | −44N | +61B | 1.0 | 2.5 | 2.5 | 1.00 | 950 | -10.0 |
| 67 | Ezkai Ormazabal, Inaki | 1754 | ESP | F | F | F | +70B | F | −23N | 1.0 | 2.5 | 2.5 | 0.50 | 1767 | +1.2 |
| 68 | Arrieta Valero, Ion | 1803 | ESP | F | F | F | F | +60B | F | 1.0 | 1.0 | 1.0 | 1.00 | 2431 | +5.4 |
| 69 | Garcia Yuste, Ramon | 1569 | ESP | F | F | −34N | −45B | −61N | =53B | 0.5 | 6.0 | 6.0 | 0.75 | 906 | -25.6 |
| 70 | Used Garzon, Ignacio Jesus | 1618 | ESP | F | F | =15B | −67N | −36N | F | 0.5 | 5.5 | 5.5 | 1.25 | 1450 | -23.2 |
| 71 | Vazquez Altuna, Alfonso | 1520 | ESP | F | F | −36B | F | =55N | F | 0.5 | 3.5 | 3.5 | 0.75 | 868 | -12.0 |
| 72 | FIDE 553060407 | 0 | — | F | F | F | F | −62N | =59N | 0.5 | 2.0 | 2.0 | 0.50 | 1354 | 0.0 |
| 73 | Dorronsoro Arenas, Unai | 1970 | ESP | F | F | F | −11N | F | −12B | 0.0 | 6.0 | 6.0 | 0.00 | 1123 | -22.2 |
| 74 | Alvarez Algorta, Aritz | 1443 | ESP | F | F | −30B | F | −58N | −54N | 0.0 | 5.5 | 5.5 | 0.00 | 635 | -20.4 |
| 75 | Barrere de la Fuente, Xuhar | 0 | ESP | F | F | −26B | F | −52N | −64B | 0.0 | 5.5 | 5.5 | 0.00 | 915 | 0.0 |
| 76 | FIDE 553054881 | 0 | — | F | F | F | F | −49N | −65B | 0.0 | 4.5 | 4.5 | 0.00 | 626 | 0.0 |
| 77 | Marco Romero, Rufino | 0 | ESP | F | F | −47B | −28N | −57N | F | 0.0 | 4.5 | 4.5 | 0.00 | 781 | 0.0 |
| 78 | FIDE 553008545 | 0 | — | F | F | F | −35B | F | −31N | 0.0 | 4.0 | 4.0 | 0.00 | 877 | 0.0 |
| 79 | Garcia De Salazar Bilbao, Jon | 0 | ESP | F | F | F | −40N | −63B | −56N | 0.0 | 3.5 | 3.5 | 0.00 | 886 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Legorburu Echeveste, EkaiESP+41.63.0 pts · #15
- 2Lin, ZhianESP+32.83.0 pts · #5
- 3Reguillaga Elias, ManexESP+28.83.0 pts · #9
Top rating losers
- 1Ezkai Vicario, AsierESP-28.81.0 pts · #72
- 2Espin Laborde, Jesus MariaESP-28.81.0 pts · #65
- 3Infante Arranz, SergioESP-27.21.0 pts · #77
Biggest upsets
- R6+217 Elo gap
- R3+191 Elo gap
- R3+145 Elo gap