Festival Sudamericano de la Juventud 2025 - Sub 10 Abs Ajedrez Clasico

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74 players participated in this 9-round tournament, held from 06 Dec 2025 to 11 Dec 2025 in Cali - VAL, Colombia. 1 titled players from 8 federations. Top 10 Elo average was 1773, and top seed was Arthur Botezeli Dorneles (🇧🇷 BRA, CM, 2021).

Arthur Botezeli Dorneles (🇧🇷 BRA, CM, 2021) won with 7.5/9, ahead of Joshua Molina Vivas (7.0) and Victor Gabriel Mendoza Alata (7.0). Dorneles clinched sole first place in the final round.

The biggest upset came in round 2: David Alonso Diaz Rosas (1584) beat Arthur Botezeli Dorneles (CM, 2021), a +437-point gap.

Location

🇨🇴Cali - VAL, Colombia

Dates

06 Dec 2025 → 11 Dec 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇧🇷CMArthur Botezeli Dorneles2021

Avg top 10

1,773

Participants

Titled players · 1

CM×1

Federations · 8 represented

🇨🇴Colombia×34

🇪🇨Ecuador×14

🇵🇪Peru×8

🇨🇱Chile×4

🇵🇾Paraguay×3

🇻🇪Venezuela×3

🇧🇷Brazil×2

🇦🇷Argentina×1

Top 3

🥇
CMArthur Botezeli Dorneles
🇧🇷BRA·2021
7.5pts·1941perf-18.8
🥈
Joshua Molina Vivas
🇨🇴COL·1601
7.0pts·1858perf+90.4
🥉
Victor Gabriel Mendoza Alata
🇵🇪PER·1602
7.0pts·1797perf+80.0

How it unfolded

Top 6 · 9 rounds

CM Arthur Botezeli Dorneles led from R9; +0.5-point edge over the runner-up.

Co-leaders

Dorneles7.5Mendoza Alata7Molina Vivas7Passmore Bowman6.5Quispe Sanchez6.5Antonio6.5— ex-leaders:Molina Vivasled R8, #8

R8 · LEADER CHANGE10 Dec

Joshua Molina Vivas takes the sole lead (7.0/8).

WIN STREAKS · 3 top finishers

CM Arthur Botezeli Dorneles 5 wins (R3–R7)Victor Gabriel Mendoza Alata 3 wins (R7–R9)Joshua Molina Vivas 5 wins (R4–R8)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1CMArthur Botezeli Dorneles	*	—	1	½
2Victor Gabriel Mendoza Alata	—	*	—	1
3Joshua Molina Vivas	0	—	*	0
4Tobias Passmore Bowman	½	0	1	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Dorneles, Arthur BotezeliCM	2021	BRA	+26B	−27N	+42B	+22N	+8B	+6N	+5B	=4N	+2B	7.5	48.5	52.5	44.25	1941	-18.8
2	Molina Vivas, Joshua	1601	COL	+32N	+38B	−4N	+44B	+29N	+25B	+10B	+15N	−1N	7.0	45.0	49.0	35.00	1858	+90.4
3	Mendoza Alata, Victor Gabriel	1602	PER	+43B	+62N	−6B	+31N	+17B	−16N	+26B	+10N	+4B	7.0	44.0	47.0	35.00	1797	+80.0
4	Passmore Bowman, Tobias	1843	CHI	+42B	+56N	+2B	+14N	=10B	=5N	+7B	=1B	−3N	6.5	50.0	53.5	36.50	1867	+19.2
5	Flores Gilvonio, Facundo	1729	PER	+49B	+29N	+27B	=8N	+16B	=4B	−1N	+19N	=7B	6.5	48.0	52.0	34.75	1838	+44.8
6	Banchon Crespo, Bruno Xavier	1691	ECU	+70N	+22B	+3N	=25B	=18N	−1B	+12N	=14B	+21N	6.5	47.5	49.5	34.00	1795	+42.0
7	Quispe Sanchez, Cristobal Edu	1850	PER	+17N	+45B	−25N	+23B	+11N	+14B	−4N	+9B	=5N	6.5	47.0	51.0	36.25	1808	-9.2
8	Quinones Bustamante, Hector Gabriel	1652	PER	+51N	+23B	+28N	=5B	−1N	−9B	+53N	+11B	+14N	6.5	46.5	50.0	32.75	1782	+48.0
9	Vrsalovic Acuna. Stjepan Antonio	1763	CHI	+58B	+21N	=15B	+41B	−25N	+8N	+16B	−7N	+20B	6.5	44.0	47.5	33.25	1743	-5.2
10	Moscoso Tellez, Joe Goldtie Marshall	1825	PER	+37N	=12B	+20N	+36B	=4N	+18B	−2N	−3B	+15B	6.0	47.5	52.0	31.75	1699	-41.4
11	Cedeno Moreira, Jose Carlos	1595	ECU	−41B	+43N	+62B	+13N	−7B	+17N	+32B	−8N	+26B	6.0	42.5	45.5	28.50	1675	+25.2
12	Principe, Felipe	1564	ARG	+48B	=10N	+53B	−16N	=26B	+34N	−6B	+43N	+32B	6.0	41.0	44.5	27.00	1545	-6.8
13	Montaluisa Farinango, Nicolas Benjamin	1457	ECU	−28N	+71B	+38N	−11B	−19N	+65B	+41N	+34B	+33N	6.0	38.0	40.0	23.50	1596	+13.2
14	Hernandez Arias, Samuel	1684	COL	+55B	+47N	+31B	−4B	+27N	−7N	+21B	=6N	−8B	5.5	45.5	49.0	26.25	1690	+4.8
15	Moreno Cardenas, Joseph Thomas	1595	COL	+71N	+34B	=9N	−18B	+36N	+24B	+25N	−2B	−10N	5.5	45.0	47.0	25.25	1630	+12.4
16	Avendano Cruz, Alejandro Emanuel	1664	COL	+68N	+59B	=41N	+12B	−5N	+3B	−9N	=23B	=22N	5.5	44.5	47.5	27.00	1648	-5.2
17	Gomez Solorzano, Luis Daniel	1436	COL	−7B	+54N	+19B	+33B	−3N	−11B	+38N	=30N	+47B	5.5	43.5	47.0	25.00	1576	+37.6
18	Chen Jara, Alejandro Pauler	1651	PAR	+35B	=53N	+50B	+15N	=6B	−10N	=20B	−21N	+36B	5.5	42.5	46.0	26.75	1575	-28.4
19	Zamora Moncayo, Emilio Sebastian	0	ECU	=36N	=44B	−17N	+63N	+13B	+29B	+27N	−5B	=23N	5.5	42.0	45.0	26.00	1542	0.0
20	Altamirano Delgado, Alejandro Samuel	1554	PER	=52B	+46N	−10B	=55N	+35B	+28N	=18N	+25B	−9N	5.5	41.0	44.5	25.50	1633	+32.0
21	Cantanhede Garcez, Henrique Haiashi Viana	1560	BRA	+61N	−9B	=37N	+32B	+41N	+53B	−14N	+18B	−6B	5.5	41.0	44.5	23.75	1554	-3.2
22	Sanchez Velez, Jorge Mateo	1518	ECU	+65B	−6N	+40B	−1B	−54N	+49N	+39B	+28N	=16B	5.5	41.0	44.0	23.75	1484	-6.0
23	Ramirez Mejia, Jose Gregorio	1502	COL	+64B	−8N	+65B	−7N	=57B	+55N	+36B	=16N	=19B	5.5	38.5	41.5	21.25	1566	+8.0
24	Gonzalez Castro, Ivan David	1479	COL	+39B	−25N	+64B	=30B	+45N	−15N	+62B	−33B	+53N	5.5	35.5	38.5	20.50	1570	+34.0
25	Camacho Casalinas, Said Gabriel	1639	COL	+67N	+24B	+7B	=6N	+9B	−2N	−15B	−20N	=30B	5.0	48.0	51.0	27.25	1636	-0.8
26	Galeano Rolin, Mateo Josias	1439	PAR	−1N	+57B	=34N	+37B	=12N	+38B	−3N	+27B	−11N	5.0	45.5	49.0	23.00	1541	+25.6
27	Diaz Rosas, David Alonso	1584	CHI	+63N	+1B	−5N	+28B	−14B	+54N	−19B	−26N	+43B	5.0	42.5	45.5	23.00	1514	-18.4
28	Vilana Guizado, Victor Saul	0	ECU	+13B	+?N	−8B	−27N	+44N	−20B	+37N	−22B	+51N	5.0	41.0	41.0	18.50	1504	0.0
29	Casares Rattia, Elio Fabian	1529	VEN	+69B	−5B	+70N	+35N	−2B	−19N	+57B	−32N	+48B	5.0	39.0	41.0	17.00	861	-27.2
30	Leith Acosta, Marcelo Alejandro	1659	PAR	+40B	−31N	+58B	=24N	−53N	=41B	+35N	=17B	=25N	5.0	38.0	41.5	23.00	1431	-73.2
31	Alcala Manotas, Sebastian Samuel	1485	COL	+74N	+30B	−14N	−3B	−34N	−43B	+64N	+54B	+41N	5.0	37.0	38.0	16.50	1522	+5.6
32	Duarte Guiza, Fredy Samuel	0	COL	−2B	+?N	+47B	−21N	+60B	+?N	−11N	+29B	−12N	5.0	37.0	37.0	12.50	1566	0.0
33	Barrios Merida, Rodrigo Di	1592	VEN	+57B	−41N	+49B	−17N	=55B	=39N	+54B	+24N	−13B	5.0	36.5	40.0	20.50	1338	-41.6
34	Ortiz Ortiz, Diego Alejandro	0	COL	+?B	−15N	=26B	=?N	+31B	−12B	+45N	−13N	+42B	5.0	35.5	35.5	15.50	1526	0.0
35	Caicedo Guerrero, Daniel Andres	0	COL	−18N	+74B	+59N	−29B	−20N	+?N	−30B	+45B	+46N	5.0	33.5	33.5	12.50	1506	0.0
36	Guevara Garcia, Samuel Alejandro	1448	COL	=19B	+52N	+56B	−10N	−15B	+46N	−23N	+62B	−18N	4.5	39.5	42.5	17.25	1474	+4.4
37	Lee Morales, Juan Martin	1430	COL	−10B	+48N	=21B	−26N	=50B	+56N	−28B	=39N	+61B	4.5	37.5	41.0	18.00	1506	+16.0
38	Miranda Unda, Felipe Sebastian	0	ECU	+60B	−2N	−13B	+58N	+?B	−26N	−17B	=40N	+?B	4.5	35.0	35.0	9.25	1489	0.0
39	Salazar Cando, Miguel Elias	0	ECU	−24N	+67B	−44N	+70B	=62N	=33B	−22N	=37B	+59N	4.5	34.0	36.0	14.75	1386	0.0
40	Basabe Buelvas, Salvador	0	COL	−30N	+66B	−22N	=56N	−46B	=63N	+71B	=38B	+57N	4.5	32.0	34.0	14.00	1309	0.0
41	Echeverria Sabogal, Jeronimo	0	COL	+11N	+33B	=16B	−9N	−21B	=30N	−13B	+?N	−31B	4.0	44.5	44.5	16.25	1547	0.0
42	Santellan Teran, Thiago Jair	1434	ECU	−4N	+63B	−1N	−54B	+51N	=50N	=48B	+52B	−34N	4.0	38.5	41.5	15.00	1008	-6.4
43	Castro Verdugo, Emmanuel David	0	COL	−3N	−11B	+73N	=47N	=56B	+31N	+?B	−12B	−27N	4.0	38.5	38.5	10.75	1464	0.0
44	Aparicio Picon, Adriano	1462	PER	=46B	=19N	+39B	−2N	−28B	=48N	−50B	=63N	+65B	4.0	37.0	40.0	15.75	803	-12.4
45	Brito Flores, Luis Stefan	1578	ECU	+54B	−7N	=55B	+50N	−24B	=57N	−34B	−35N	+63B	4.0	36.5	39.5	14.00	865	-32.0
46	Vargas Cura, Samuel	0	COL	=44N	−20B	+68N	−53B	+40N	−36B	+58N	=47N	−35B	4.0	34.5	37.5	15.00	1333	0.0
47	Guayasamin Yanez, William Mateo	1525	ECU	+73N	−14B	−32N	=43B	−52N	+64B	+55N	=46B	−17N	4.0	34.5	36.5	12.50	759	-34.8
48	Gomez Calderon, Sebastian	0	COL	−12N	−37B	−67N	+73B	+59N	=44B	=42N	+49B	−29N	4.0	34.0	36.0	13.50	1356	0.0
49	Alfonso Carrillo, Juan Diego	0	COL	−5N	+61B	−33N	−64B	+71N	−22B	+68B	−48N	+66B	4.0	33.5	35.5	11.50	811	0.0
50	Perez Rojas, Alonso	0	CHI	=?B	+60N	−18N	−45B	=37N	=42B	+44N	−53B	=62N	4.0	32.0	32.0	13.25	1452	0.0
51	Bastidas Ruiz, Luciano Dayan	0	COL	−8B	−64N	−54B	+69N	−42B	+72N	+66B	+60N	−28B	4.0	31.0	33.0	11.00	1404	0.0
52	Leguizamo Corzo, Hesson Samuel	0	COL	=20N	−36B	−?B	+66N	+47B	−62N	=60B	−42N	+?B	4.0	27.5	27.5	11.50	1388	0.0
53	Rodriguez Zambrano, Juan Manuel	1476	VEN	F	=18B	−12N	+46N	+30B	−21N	−8B	+50N	−24B	3.5	42.0	42.0	15.75	1401	-20.8
54	Galvis Garcia, Alejandro	0	COL	−45N	−17B	+51N	+42N	+22B	−27B	−33N	−31N	=56B	3.5	38.0	41.5	15.25	1381	0.0
55	Alvarez Ramos, Ary	0	COL	−14N	+73B	=45N	=20B	=33N	−23B	−47B	=56N	=60B	3.5	36.5	38.5	12.75	1410	0.0
56	Rosales Rojas, Juan Sebastian	1567	COL	+72N	−4B	−36N	=40B	=43N	−37B	=61N	=55B	=54N	3.5	34.5	36.5	11.50	764	-62.0
57	Galan Naranjo, Simon	0	COL	−33N	−26N	+74B	+59B	=23N	=45B	−29N	=?N	−40B	3.5	33.5	33.5	9.25	1423	0.0
58	Choquepuma Alcasihuincha, Yahel Leandro	1418	PER	−9N	+72B	−30N	−38B	+67N	=60N	−46B	−59B	+69N	3.5	32.5	34.5	9.25	1295	-21.6
59	Fodere, Rafael	1505	URU	+66B	−16N	−35B	−57N	−48B	+67N	=63B	+58N	−39B	3.5	32.0	35.0	11.00	1541	+3.6
60	Alonso Ruiz, Ian Alejandro	1530	COL	−38N	−50B	+72N	+67B	−32N	=58B	=52N	−51B	=55N	3.5	31.5	33.5	10.50	1418	-6.0
61	Gonzalez Arenas, Emmanuel	0	COL	−21B	−49N	−?B	=68B	+72N	=66N	=56B	+70B	−37N	3.5	27.5	27.5	8.75	1188	0.0
62	Guzman Ordenana, Luis Sebastian	1411	ECU	F	−3B	−11N	+65N	=39B	+52B	−24N	−36N	=50B	3.0	38.5	38.5	11.25	731	-63.2
63	Gallego Gomez, Samuel David	0	COL	−27B	−42N	=66N	−19B	+68N	=40B	=59N	=44B	−45N	3.0	33.5	36.5	10.50	1268	0.0
64	Rodriguez Rodriguez, Thiago	0	COL	−23N	+51B	−24N	+49N	−?B	−47N	−31B	=69B	=68N	3.0	33.5	33.5	10.75	696	0.0
65	Ng Parra, Liam Josue	0	ECU	−22N	+68B	−23N	−62B	+70N	−13N	−?B	+71B	−44N	3.0	31.0	31.0	7.00	687	0.0
66	Pena Gomez, Dylan Andres	0	COL	−59N	−40N	=63B	−52B	+69N	=61B	−51N	+72B	−49N	3.0	29.0	31.0	7.75	708	0.0
67	FIDE 144457707	0	—	−25B	−39N	+48B	−60N	−58B	−59B	−69N	+73B	+72N	3.0	28.5	30.5	8.00	724	0.0
68	Araujo Briones, Samuel Antonio	0	ECU	−16B	−65N	−46B	=61N	−63B	+73B	−49N	+74N	=64B	3.0	28.0	29.0	6.25	863	0.0
69	FIDE 144419104	0	—	−29N	−70B	−71N	−51B	−66B	+74N	+67B	=64N	−58B	2.5	25.5	26.5	5.50	680	0.0
70	FIDE 3668169	0	—	−6B	+69N	−29B	−39N	−65B	−71N	+74B	−61N	−73B	2.0	29.0	30.0	3.50	816	0.0
71	Franco Jimenez, Franz	0	COL	−15B	−13N	+69B	−?N	−49B	+70B	−40N	−65N	−74B	2.0	28.5	28.5	4.50	726	0.0
72	FIDE 144471483	0	—	−56B	−58N	−60B	+74N	−61B	−51B	+73N	−66N	−67B	2.0	26.0	27.0	3.00	705	0.0
73	Moreno Rodriguez, Isaac	0	COL	−47B	−55N	−43B	−48N	+74B	−68N	−72B	−67N	+70N	2.0	25.5	26.5	3.00	708	0.0
74	Ruiz Alvarez, Jeronimo	0	COL	−31B	−35N	−57N	−72B	−73N	−69B	−70N	−68B	+71N	1.0	25.0	27.0	2.00	686	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Molina Vivas, JoshuaCOL
+90.4
7.0 pts · #8
2Mendoza Alata, Victor GabrielPER
+80.0
7.0 pts · #5
3Quinones Bustamante, Hector GabrielPER
+48.0
6.5 pts · #12

Top rating losers

1Leith Acosta, Marcelo AlejandroPAR
-73.2
5.0 pts · #31
2Guzman Ordenana, Luis SebastianECU
-63.2
3.0 pts · #69
3Rosales Rojas, Juan SebastianCOL
-62.0
3.5 pts · #67

Biggest upsets

R2+437 Elo gap
Diaz Rosas, David Alonso1584 beat CMDorneles, Arthur Botezeli2021
R9+241 Elo gap
Mendoza Alata, Victor Gabriel1602 beat Passmore Bowman, Tobias1843
R7+224 Elo gap
Molina Vivas, Joshua1601 beat Moscoso Tellez, Joe Goldtie Marshall1825