Mauricio Arias Santana

CRC · 49 yrs · K=20 · Peak 2368 (Jan 2010)

Best performance: 2507 at Metropolitano 2008(Best of 2008)

World #=10559 live103#10,456 publishedCosta Rica #12

NOV26 Rating

2163

Live Rating

2163.0

Change

0.0

Games Played

How live ratings are calculated

Rating History · Classical

Loading chart…

Official classical rating by month

List	Rating	Change
Nov 2026	2163	0
Oct 2026	2163	0
Sep 2026	2163	0
Aug 2026	2163	0
Jul 2026	2163	0
Jun 2026	2163	0
May 2026	2163	0
Apr 2026	2163	0
Mar 2026	2163	0
Feb 2026	2163	0
Jan 2026	2163	-10
Dec 2025	2173	0

Form · Classical

oldest → latest

From 629 classical games on record, the latest on Dec 15, 2025.

Classical games since the November list

No rated standard games this rating periodsince the NOV26 list (Nov 1, 2026)

	Last played	Score	TPR
	I Open CRChess-Montes de Oca 2025 - Grupo ADec 13, 2025 – Dec 15, 2025TPR 2101	4½/7	2101

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 615 rated classical games against rated opponents, 2007–2025

#	Opponent	Rating
1,	GM Hannes Stefansson, Nov 2014 · Final Campeonato Nacional Absoluto 2014	, 2555
2,	GM Robert Hungaski, Jul 2012 · 40th Annual World Open - Open Section	, 2488
3,	GM Bernal Gonzalez Acosta, Nov 2009 · Costa Rican National Championship Final 2009	, 2449
4,	IM Leonardo Valdes Romero, Jul 2010 · National Chess Championship 2010	, 2429
5,	GM Bernal Gonzalez Acosta, Aug 2010 · National Chess Championship 2010	, 2423
6,	IM Leonardo Valdes Romero, Dec 2019 · Torneo Internacional Metropolitano Grupo A 2019	, 2407
7,	GM Daniel Fernandez, Jul 2008 · IV Torneo Internacional de Ajedrez Alajuela 2008	, 2401
8,	IM Leonardo Valdes Romero, Nov 2016 · Torneo Clasificatorio al Nacional Absoluto 2017	, 2387
8,	IM Leonardo Valdes Romero, Oct 2011 · Final Campeonato Nacional Absoluto 2011	, 2387
10,	IM Sergio Duran Vega, Dec 2019 · Torneo Internacional Metropolitano Grupo A 2019	, 2372

#	Opponent	Overall	Rating
1,	GM Veselin Topalov, Highest-rated meeting: Sep 2010 · 39th Olympiad Khanty-Mansiysk 2010 Open tournament	, 0/1	, 2803
2,	GM Vladimir Akopian, Highest-rated meeting: Sep 2010 · 39th Olympiad Khanty-Mansiysk 2010 Open tournament	, ½/1	, 2691
3,	GM Mateusz Bartel, Highest-rated meeting: Aug 2012 · 40th World Chess Olympiad-Open	, 0/1	, 2674
4,	GM Yuniesky Quesada Perez, Highest-rated meeting: Mar 2015 · VI Torneo Internacional de Alajuela 2015	, 0/2	, 2637
5,	GM Eduardo Iturrizaga Bonelli, Highest-rated meeting: Jul 2012 · 40th Annual World Open - Open Section	, 0/1	, 2628
6,	GM Tamaz Gelashvili, Highest-rated meeting: Mar 2012 · 13th Annual Pittsburgh Open	, ½/1	, 2619
7,	GM Samuel Sevian, Highest-rated meeting: Jun 2017 · XII Campeonato de Ajedrez Continental de las Americas Colombia 2017	, 0/1	, 2601
8,	GM Victor Mikhalevski, Highest-rated meeting: Jul 2008 · IV Torneo Internacional de Ajedrez Alajuela 2008	, 0/1	, 2592
9,	GM Fernando Peralta, Highest-rated meeting: Jul 2022 · 44th FIDE Chess Olympiad Chennai 2022 Open	, 0/1	, 2591
10,	GM Sam Shankland, Highest-rated meeting: Apr 2012 · 6th Annual Philadelphia Open	, 0/2	, 2580

Openings · Classical

From the moves of 88 of 629 classical games on record.

As WhiteOpens 1.d4 in 21 of 47 games, 1.e4 in 17, 1.Nf3 in 6.

As BlackMeets 1.e4 with 1...e5, and 1.d4 with 1...Nf6.

All openings (6 as White, 7 as Black)

Openings in White games	Games	Score
Sicilian Defense	9	56%
English Opening	4	63%
Indian Defense	4	38%
Rapport-Jobava System	4	50%
King's Indian Defense	3	50%
Tarrasch Defense	3	33%

20 more games in openings played fewer than 3 times.

Against 1.e4: 1...e5 in 11, 1...c5 in 5, 1...d5 in 5.

Against 1.d4: 1...Nf6 in 11.

Against 1.Nf3: 1...c5 in 3.

Openings in Black games	Games	Score
Scandinavian Defense	5	80%
Sicilian Defense	5	70%
Petrov's Defense	4	13%
Benko Gambit	3	67%
English Opening	3	50%
Indian Defense	3	83%
Ruy Lopez	3	33%

15 more games in openings played fewer than 3 times.

Event timeline · Classical

50 of 80 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

Year	Games	Score	Avg opp	TPR
2025	7	4½	1999	2101
2024	31	23½	1784	1986
2023	26	16½	2076	2171
2022	45	26	2139	2196
2021	17	13	2153	2355
2019	45	29	2180	2282
2018	32	22	2130	2271
2017	51	30½	2155	2227
2016	41	27	2160	2277
2015	53	31½	2185	2250
2014	65	44	2167	2300
2013	17	7½	2224	2181
2012	69	42	2231	2311
2011	23	16	2140	2289
2010	30	15½	2262	2276
2009	13	10½	2198	2449
2007	26	17½	2201	2326

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

I Open CRChess-Montes de Oca 2025 - Grupo A2101
Dec 2025Swissfederation source
Best of 2025Score 4½/7Opp avg 1999Start 2173
Campeonato Nacional por Equipos Clasico 2024—(1)
Apr – Jun 2024Teamfederation source
Score 1/1Opp avg 1952Start 2196
LVII Capablanca in Memoriam - Open 20242099
May 2024Swissfederation source
Best of 2024Score 5½/10Opp avg 2063Start 2190
I Torneo de Selecciones Nacionales 20242079
Apr 2024Swissfederation source
#2 in 2024Score 6/7Opp avg 1770Start 2196
I ADAMO IRT Febrero A 20242192
Feb 2024Round robinfederation source
Score 7/7Opp avg 1392Start 2190
Campeonato Nacional Absoluto 20241893
Jan 2024Swissfederation source
#3 in 2024Score 4/7Opp avg 1768Start 2216
2023 US Masters1990
Nov 2023Swissfederation source
#4 in 2023Score 4/9Opp avg 2033Start 2295
Campeonato Centroamericano de ajedrez por Equipos 2023, Open Modalidad Clasica2186
Nov 2023Swissfederation source
#2 in 2023Score 2/4Opp avg 2186Start 2295
2023 1000GM Independence Day Scheveningen IM Norm 12424
Jun – Jul 2023Individualfederation source
Best of 2023Score 6½/8Opp avg 2173Start 2261
Campeonato Nacional Absoluto CRC 20232154
Jan 2023Swissfederation source
#3 in 2023Score 4/5Opp avg 1914Start 2266
Torneo Internacional Joaquin Gutierrez Mangel 20222128
Dec 2022Round robinfederation source
#5 in 2022Score 1½/9Opp avg 2401Start 2317
2022 US Masters2224
Nov 2022Swissfederation source
#3 in 2022Score 5/9Opp avg 2181Start 2317
Campeonato Nacional por Equipos Clasico 20222246
Sep 2022Teamfederation source
#2 in 2022Score 4½/6Opp avg 2053Start 2320
44th FIDE Chess Olympiad Chennai 2022 Open2297
Jul – Aug 2022Teamfederation source
Best of 2022Score 7/11Opp avg 2225Start 2318
Torneo A Goicoechea Abril 20222204
Mar – Apr 2022Round robinfederation source
#4 in 2022Score 8/9Opp avg 1853Start 2320
Campeonato Nacional Absoluto CRC 2022—(2)
Jan 2022Swissfederation source
Score 2/3Opp avg 1887Start 2327
Torneo Subzonal Absoluto 2.3.2 "Boris Pineda in Memoriam"2354
Dec 2021Swisschess-results.com
#2 in 2021Score 7/9Opp avg 2134Start 2309
Torneo Seleccion Nacional A2367
Oct – Nov 2021Round robinfederation source
Best of 2021Score 8/10Opp avg 2174Start 2291
Campeonato Nacional Absoluto 20202191
Jan 2020Swissfederation source
Best of 2020Score 7/11Opp avg 2089Start 2276
Torneo Internacional Metropolitano Grupo A 20192368
Dec 2019Swissfederation source
Best of 2019Score 6½/9Opp avg 2202Start 2276
2019 Saint Louis Invitational - IM Norm2227
Nov 2019Round robinfederation source
#4 in 2019Score 3½/9Opp avg 2307Start 2292
LV Campeonato Nacional por Equipos Clasico 20192217
Apr – Jun 2019Teamfederation source
#5 in 2019Score 6/7Opp avg 1908Start 2288
Capablanca in Memoriam - Open 20192309
May 2019Swissfederation source
#3 in 2019Score 6/10Opp avg 2237Start 2288
Campeonato Nacional Absoluto 20192330
Jan 2019Round robinfederation source
#2 in 2019Score 8/11Opp avg 2181Start 2270
Campeonato Nacional Clasico de Ajedrez por Equipos FCA 20182337
May – Jun 2018Teamfederation source
#2 in 2018Score 6½/7Opp avg 1936Start 2255

Rated near Mauricio Arias Santana · Classical

World

#=10559Jonathan Demanghon2163.0
#=10559Gilles Soulas2163.0
#=10559IM Mauricio Arias Santana2163.0
#=10559FM Franck Gertosio2163.0
#=10559Davide Di Trapani2163.0

Costa Rica

#10FM Matias Haziel Lizano Quiros2211.0
#11WIM Sofia Mayorga Araya2186.2
#12IM Mauricio Arias Santana2163.0
#13FM Gustavo Adolfo Trigueros Fallas2143.0
#14FM Jonathan Carvajal Gorgona2128.0

Live ratings projected from the NOV26 published list · Not affiliated with FIDE