Campeonato Argentino Sub18 2026 Absoluto

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37 players participated in this 8-round tournament, held from 02 Apr 2026 to 05 Apr 2026 in Villa Martelli - Buenos Aires, Argentina. Top 10 Elo average was 2014, and top seed was Franco Lopez Maffia (🇦🇷 ARG, 2133).

Franco Lopez Maffia (🇦🇷 ARG, 2133) won with 6.5/8, ahead of Agustin Varela (6.5) and Lautaro Benjamin Tolosa (6.0). Lopez Maffia shared the lead from round 5, winning on tie-break.

The biggest upset came in round 8: Santino Coronel Lovera (1780) beat Santiago David Amadei (1961), a +181-point gap.

Location

🇦🇷Villa Martelli - Buenos Aires, Argentina

Dates

02 Apr 2026 → 05 Apr 2026

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 8 rounds

Top seed

🇦🇷Franco Lopez Maffia2133

Avg top 10

2,014

Participants

Federations · 1 represented

🇦🇷Argentina×35

Top 3

🥇
Franco Lopez Maffia
🇦🇷ARG·2133
6.5pts·2180perf+17.6
🥈
Agustin Varela
🇦🇷ARG·1977
6.5pts·2195perf+86.8
🥉
Lautaro Benjamin Tolosa
🇦🇷ARG·1818
6.0pts·2020perf+80.8

How it unfolded

Top 6 · 8 rounds

Tight race until R8; 2 players tied at 6.5/8, decided on Buchholz.

Co-leaders

Lopez Maffia6.5Varela6.5Tolosa6De La Cruz Navarro5.5Ccahuancama5.5De Los Santos5.5— ex-leaders:Platiniled R4, #8Luchiniled R3, #10

R4 · LEADER CHANGE03 Apr

Renzo Jesus Platini takes the sole lead (3.5/4).

R8 · TIEBREAK CLUSTER

2 players finish on 6.5/8. Lopez Maffia takes the title on Buchholz Cut1 (37.0).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Franco Lopez Maffia drew with Agustin Varela (Black).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Franco Lopez Maffia	*	½	1	½
2Agustin Varela	½	*	—	—
3Lautaro Benjamin Tolosa	0	—	*	1
4Martin Leonardo De La Cruz Navarro	½	—	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	Pts	Bu C1	Bu	SB	Perf	Δ
1	Lopez Maffia, Franco	2133	ARG	+3B	=4N	+7B	=2N	+10B	=12N	+8N	+9B	6.5	37.0	41.5	33.25	2180	+17.6
2	Varela, Agustin	1977	ARG	+27N	+20B	=11N	=1B	=9N	+17B	+13N	+12B	6.5	32.5	36.0	28.25	2195	+86.8
3	Tolosa, Lautaro Benjamin	1818	ARG	−1N	=15B	=34N	+21B	+29N	+16B	+24N	+4N	6.0	31.5	33.0	23.50	2020	+80.8
4	De La Cruz Navarro, Martin Leonardo	1897	ARG	+34N	=1B	+18N	=11B	+20N	=13B	+9N	−3B	5.5	34.0	35.5	21.75	2056	+67.2
5	Ccahuancama, Abraham William	2037	ARG	+16N	−9B	+15N	+17B	−12N	+14N	=10B	+13B	5.5	31.5	35.5	24.25	2064	+14.0
6	De Los Santos, Jeremias	1858	ARG	+37N	−24B	+36N	+7B	=11N	−9B	+19N	+10N	5.5	27.0	27.5	17.25	1986	+43.2
7	Troche, Dylan	1929	ARG	+19N	=18B	−1N	−6N	+34B	+15B	=14N	+17B	5.0	33.0	34.5	18.25	1957	+12.4
8	Codino, Juan Martin	1873	ARG	+31N	−11B	=19N	+18B	+25N	=10N	−1B	+20B	5.0	31.0	34.0	18.75	1985	+46.4
9	Galvan, Juan Ignacio	1928	ARG	+22B	+5N	=10B	=14N	=2B	+6N	−4B	−1N	4.5	38.5	42.5	22.75	2000	+32.8
10	Platini, Renzo Jesus	2019	ARG	+29N	+25B	=9N	+13B	−1N	=8B	=5N	−6B	4.5	35.0	38.0	18.50	1974	-15.2
11	Martinez, Valentin Jesus	2038	ARG	+26B	+8N	=2B	=4N	=6B	+24N	−12B	F	4.5	34.0	34.0	20.75	2004	-10.4
12	Johansson, David Natanael	1992	ARG	F	−17B	+21N	+28N	+5B	=1B	+11N	−2N	4.5	34.0	34.0	20.25	2048	+24.4
13	Luchini, Franco	2020	ARG	+30B	+28N	+24B	−10N	+14B	=4N	−2B	−5N	4.5	33.0	36.0	16.75	1983	-12.8
14	Fournel, Bautista	2038	ARG	=15N	+16B	+17N	=9B	−13N	−5B	=7B	+27N	4.5	32.5	36.0	19.00	1919	-44.0
15	Coronel Lovera, Santino	1780	ARG	=14B	=3N	−5B	=34N	+23B	−7N	+30B	+24B	4.5	31.5	33.0	16.50	1900	+50.0
16	Rojas, Ivan Leonardo	1740	ARG	−5B	−14N	+35B	+32N	+28B	−3N	=18B	+25B	4.5	28.5	30.0	12.00	1855	+31.6
17	Molina Salazar, Facundo	1870	ARG	+32B	+12N	−14B	−5N	+26B	−2N	+22B	−7N	4.0	33.5	35.5	14.00	1869	-1.6
18	Pouso Dailoff, Matias Nicolas	1838	ARG	+36B	=7N	−4B	−8N	=27N	+31B	=16N	=19B	4.0	30.5	31.5	12.50	1735	-39.6
19	Feldman, Mariano	1700	ARG	−7B	+33N	=8B	+22N	−24B	+28N	−6B	=18N	4.0	30.0	32.0	13.50	1811	+38.4
20	Figueroa, Santiago	1861	ARG	+33B	−2N	+32B	=24N	−4B	=27N	+26B	−8N	4.0	29.5	31.5	11.00	1737	-39.2
21	Anchava, Thiago	1700	ARG	−24N	+35B	−12B	−3N	+37B	−26N	+33N	+28B	4.0	24.0	24.5	7.00	1639	-14.8
22	Leguiza, Vicente	1700	ARG	−9N	+37B	=25N	−19B	=31N	+29B	−17N	+34N	4.0	23.5	24.0	8.25	1725	+7.2
23	Ventura, Ignacio	1666	ARG	−25N	+29B	−28B	=30N	−15N	+32B	+34B	=26N	4.0	22.5	24.0	9.75	1722	+20.0
24	Amadei, Santiago David	1961	ARG	+21B	+6N	−13N	=20B	+19N	−11B	−3B	−15N	3.5	33.0	37.0	15.50	1804	-66.4
25	Bona, Luca Jesus	1874	ARG	+23B	−10N	=22B	=26N	−8B	+30N	=27B	−16N	3.5	29.0	32.0	12.50	1730	-62.8
26	Barquesi Kobalc, Danilo Gabriel	1758	ARG	−11N	=34B	+31N	=25B	−17N	+21B	−20N	=23B	3.5	27.0	28.5	11.50	1750	-6.8
27	Ryban, Axel	1704	ARG	−2B	−32N	+33B	+36N	=18B	=20B	=25N	−14B	3.5	26.5	27.5	8.75	1769	+12.8
28	Aragon, Ciro	1866	ARG	+35N	−13B	+23N	−12B	−16N	−19B	+32N	−21N	3.0	27.5	29.0	7.50	1530	-99.6
29	Freiberg, Camilo	1721	ARG	−10B	−23N	+30B	+37N	−3B	−22N	+35N	−31B	3.0	26.0	26.5	5.00	1490	-69.2
30	Rosales, Matias Ariel	1724	ARG	−13N	=31B	−29N	=23B	+33N	−25B	−15N	+32B	3.0	24.5	26.5	7.50	1513	-62.0
31	Bejarano, Thiago	1652	ARG	−8B	=30N	−26B	+35N	=22B	−18N	F	+29N	3.0	24.0	24.0	8.00	1644	-2.8
32	Lourenzo, Joaquin	0	ARG	−17N	+27B	−20N	−16B	+36B	−23N	−28B	−30N	2.0	26.0	27.0	4.50	1467	0.0
33	FIDE 20079591	0	—	−20N	−19B	−27N	F	−30B	+36N	−21B	+37B	2.0	20.0	20.0	1.50	938	0.0
34	Lieby, Juan Sebastian	1681	ARG	−4B	=26N	=3B	=15B	−7N	F	−23N	−22B	1.5	32.5	32.5	7.00	1563	-38.4
35	Mattus, Elias	0	ARG	−28B	−21N	−16N	−31B	F	+37N	−29B	=36N	1.5	19.0	19.0	1.00	936	0.0
36	Zaragoza, Fernando	0	ARG	−18N	F	−6B	−27B	−32N	−33B	=37N	=35B	1.0	19.0	19.0	1.00	1000	0.0
37	FIDE 20068972	0	—	−6B	−22N	F	−29B	−21N	−35B	=36B	−33N	0.5	21.0	21.0	0.50	945	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Varela, AgustinARG
+86.8
6.5 pts · #2
2Tolosa, Lautaro BenjaminARG
+80.8
6.0 pts · #3
3De La Cruz Navarro, Martin LeonardoARG
+67.2
5.5 pts · #4

Top rating losers

1Aragon, CiroARG
-99.6
3.0 pts · #31
2Freiberg, CamiloARG
-69.2
3.0 pts · #33
3Amadei, Santiago DavidARG
-66.4
3.5 pts · #16

Biggest upsets

R8+181 Elo gap
Coronel Lovera, Santino1780 beat Amadei, Santiago David1961
R6+166 Elo gap
Feldman, Mariano1700 beat Aragon, Ciro1866
R8+166 Elo gap
Anchava, Thiago1700 beat Aragon, Ciro1866