I Open Promesas del Ajedrez Sub-16

Open SwissStandard

37 players participated in this 6-round tournament, held from 13 Jun 2025 to 15 Jun 2025 in Pamplona, Spain. 4 titled players. Top 10 Elo average was 2062, and top seed was Alejandro Fuentes Guinot (🇪🇸 ESP, FM, 2220).

Oscar Blazquez Sanz (🇪🇸 ESP, 2001) won with 5.0/6, ahead of Alcher Jaime Galeano (4.5) and Sergio Atares Buisan (4.5). Blazquez Sanz took the lead from round 5.

The biggest upset came in round 1: Maria Labiano Hernandez (1688) beat Diego Jario Dominguez (2031), a +343-point gap.

Location

🇪🇸Pamplona, Spain

Dates

13 Jun 2025 → 15 Jun 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 6 rounds

Top seed

🇪🇸FMAlejandro Fuentes Guinot2220

Avg top 10

2,062

Participants

Titled players · 4

FM×2

CM×2

Federations · 1 represented

🇪🇸Spain×37

Top 3

🥇
Oscar Blazquez Sanz
🇪🇸ESP·2001
5.0pts·2187perf+57.6
🥈
Alcher Jaime Galeano
🇪🇸ESP·2033
4.5pts·2187perf+50.0
🥉
FMSergio Atares Buisan
🇪🇸ESP·2174
4.5pts·2146perf-4.0

How it unfolded

Top 6 · 6 rounds

Oscar Blazquez Sanz led from R5; +0.5-point edge over the runner-up.

Co-leaders

Blazquez Sanz5Jaime Galeano4.5Antonanzas Fernandez4.5Atares Buisan4.5Fuentes Guinot4Altelarrea Hernando4

R5 · LEADER CHANGE15 Jun

Oscar Blazquez Sanz takes the sole lead (4.5/5).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Oscar Blazquez Sanz beat Alcher Jaime Galeano (White).

R1–R4 · WIN STREAK

Alcher Jaime Galeano won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Oscar Blazquez Sanz	*	1	½	½
2Alcher Jaime Galeano	0	*	—	½
3CMMario Antonanzas Fernandez	½	—	*	½
4FMSergio Atares Buisan	½	½	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Blazquez Sanz, Oscar	2001	ESP	+19B	+26N	=3B	+12N	+2B	=4N	5.0	20.0	22.0	17.50	2187	+57.6
2	Jaime Galeano, Alcher	2033	ESP	+17N	+13B	+5B	+6N	−1N	=3B	4.5	21.0	24.5	17.25	2187	+50.0
3	Atares Buisan, SergioFM	2174	ESP	+27N	+18B	=1N	=4B	+10N	=2N	4.5	20.5	22.5	15.50	2146	-4.0
4	Antonanzas Fernandez, MarioCM	2087	ESP	+21B	=14N	+10B	=3N	+11B	=1B	4.5	20.0	23.0	16.50	2122	+14.4
5	Fuentes Guinot, AlejandroFM	2220	ESP	+9N	+16B	−2N	+13B	=6N	=7B	4.0	20.0	23.5	15.00	2096	-29.2
6	Tafall Villanueva, Iker	2008	ESP	+29N	+8B	+7N	−2B	=5B	=12N	4.0	20.0	22.0	13.75	2090	+28.8
7	Sarasketa Irastortza, OierCM	2190	ESP	+15B	+11N	−6B	=8N	+25B	=5N	4.0	19.0	21.5	13.50	2048	-31.6
8	Altelarrea Hernando, Rodrigo	1841	ESP	+34N	−6N	+19B	=7B	+21N	=10B	4.0	17.5	18.5	10.75	1953	+37.6
9	Esparza Toni, Angel	1749	ESP	−5B	+28N	+37B	−10N	+20N	+18B	4.0	15.5	15.5	8.00	1965	+64.8
10	Sanz Pueyo, Adrian	1957	ESP	+23N	+25B	−4N	+9B	−3B	=8N	3.5	20.0	22.5	11.50	1930	-3.6
11	Etayo Delgado, Asier	1871	ESP	+24N	−7B	+29N	+20B	−4N	=13B	3.5	18.0	20.0	9.75	1952	+27.6
12	Martinez Echezarreta, Miguel 2009	1840	ESP	F	+32B	+14N	−1B	+17N	=6B	3.5	17.5	17.5	10.50	1975	+37.2
13	Mulet Durango, Carolina	1857	ESP	+33B	−2N	+26B	−5N	+22B	=11N	3.5	17.0	18.5	8.25	1854	+5.2
14	Sobron Angulo, Adrian	1863	ESP	+35N	=4B	−12B	=25N	+19B	=16N	3.5	17.0	17.0	8.25	1853	+2.8
15	Berlanga Huarte, Marcos	1744	ESP	−7N	+24B	−20N	=28B	+29N	+25B	3.5	14.5	16.5	8.50	1848	+30.0
16	Fernandez Santiago, Mikel	1916	ESP	+28B	−5N	+27B	−21N	+26B	=14B	3.5	14.5	16.5	7.75	1851	-16.8
17	Vidondo Aguirrebalzategui, Antso	1703	ESP	−2B	=33N	+31B	+32N	−12B	+27N	3.5	13.5	15.0	6.25	1717	+2.8
18	Rodriguez Lima, Axel	1864	ESP	+22B	−3N	−21B	+23N	+27B	−9N	3.0	17.5	19.5	8.00	1741	-37.2
19	Perez Azanza, Irati	1662	ESP	−1N	+34B	−8N	+30B	−14N	+32B	3.0	16.0	17.0	4.50	1666	-2.4
20	Jario Dominguez, Diego	2031	ESP	−26B	+31N	+15B	−11N	−9B	+28N	3.0	15.0	17.0	7.50	1664	-87.6
21	Salas Giralda, Luca	1708	ESP	−4N	+35B	+18N	+16B	−8B	F	3.0	15.0	15.0	6.50	1905	+50.4
22	Perez Urcelayeta, Oihan	1515	ESP	−18N	−27B	+34N	+29B	−13N	+33B	3.0	12.0	13.0	4.50	1662	+40.0
23	Lera Cunado, Nora	1574	ESP	−10B	+30N	−25N	−18B	+37N	+34B	3.0	12.0	12.0	3.00	1635	+7.6
24	Gonzalez Anuncibay, Juan Pablo	1559	ESP	−11B	−15N	−30B	+35N	+36N	+26B	3.0	11.0	11.0	2.00	1703	+42.0
25	Morras Alonso, Gael	1806	ESP	+36B	−10N	+23B	=14B	−7N	−15N	2.5	17.5	17.5	4.75	1733	-24.0
26	Labiano Hernandez, Maria	1688	ESP	+20N	−1B	−13N	+36B	−16N	−24N	2.0	18.0	18.0	3.00	1666	-11.6
27	Casas Crespo, Ibai	1716	ESP	−3B	+22N	−16N	+37B	−18N	−17B	2.0	17.5	17.5	3.00	1641	-29.2
28	Pena Comenge, Paula	1563	ESP	−16N	−9B	+35N	=15N	=32B	−20B	2.0	15.5	15.5	2.50	1605	+4.8
29	Lopez Molina, Paula	1664	ESP	−6B	+36N	−11B	−22N	−15B	+37N	2.0	14.0	14.0	0.00	1544	-40.0
30	Reis Ivailov, Lucas	0	ESP	F	−23B	+24N	−19N	−34B	+35B	2.0	10.0	10.0	3.00	1461	0.0
31	Goni Arrastia, Xavier	0	ESP	F	−20B	−17N	+33N	F	+36B	2.0	8.0	8.0	1.50	1643	0.0
32	Antonanzas De La Merced, Saul	1556	ESP	F	−12N	+33B	−17B	=28N	−19N	1.5	13.5	13.5	2.50	1492	-19.2
33	Royo Yus, Chabier	1435	ESP	−13N	=17B	−32N	−31B	+35B	−22N	1.5	13.5	13.5	1.75	1464	+2.4
34	Arraiza Garcia, Sofia	1429	ESP	−8B	−19N	−22B	F	+30N	−23N	1.0	15.0	15.0	2.00	847	-38.8
35	Rey Rivas, Mikel	1483	ESP	−14B	−21N	−28B	−24B	−33N	−30N	0.0	13.5	15.0	0.00	820	-61.6
36	Berciano Fernandez de Betono, Unai	1408	ESP	−25N	−29B	F	−26N	−24B	−31N	0.0	11.5	11.5	0.00	873	-29.6
37	Garuz Casado, Maria	1479	ESP	F	F	−9N	−27N	−23B	−29B	0.0	11.0	11.0	0.00	879	-39.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Esparza Toni, AngelESP
+64.8
4.0 pts · #7
2Blazquez Sanz, OscarESP
+57.6
5.0 pts · #1
3Salas Giralda, LucaESP
+50.4
3.0 pts · #19

Top rating losers

1Jario Dominguez, DiegoESP
-87.6
3.0 pts · #28
2Rey Rivas, MikelESP
-61.6
0.0 pts · #36
3Lopez Molina, PaulaESP
-40.0
2.0 pts · #27

Biggest upsets

R1+343 Elo gap
Labiano Hernandez, Maria1688 beat Jario Dominguez, Diego2031
R5+282 Elo gap
Esparza Toni, Angel1749 beat Jario Dominguez, Diego2031
R4+208 Elo gap
Salas Giralda, Luca1708 beat Fernandez Santiago, Mikel1916