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Mariano Acosta
Number of games in database: 48
Years covered: 1977 to 2017
Last FIDE rating: 2000
Highest rating achieved in database: 2200
Overall record: +14 -29 =5 (34.4%)*
   * Overall winning percentage = (wins+draws/2) / total games.

Repertoire Explorer
Most played openings
B07 Pirc (4 games)
A07 King's Indian Attack (3 games)
A09 Reti Opening (3 games)
C26 Vienna (2 games)
D37 Queen's Gambit Declined (2 games)
A00 Uncommon Opening (2 games)

   🏆 Isle of Man Masters
   M Acosta vs Janik Kruse (Sep-29-17) 1/2-1/2
   A Byron vs M Acosta (Sep-28-17) 1-0
   G Lorscheid vs M Acosta (Sep-27-17) 1-0
   M Acosta vs R Vaishali (Sep-26-17) 0-1
   A Rudolf vs M Acosta (Sep-24-17) 1-0

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[what is this?]
Two players: the first is from the USA, he was born in 1949. The second is from Argentina, he was born in 1958.

 page 1 of 2; games 1-25 of 48  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. Yanofsky vs M Acosta 1-0431977Canadian OpenA16 English
2. B Wall vs M Acosta 0-145197778th US OpenC69 Ruy Lopez, Exchange, Gligoric Variation
3. Joel Benjamin vs M Acosta  0-150197778th US OpenA17 English
4. E W Marchand vs M Acosta  1-0301985New York OpenA30 English, Symmetrical
5. M Acosta vs J Rosito  0-1261999XXX International Open, Mar del Plata AA25 English
6. M Acosta vs A Hoffman  0-1491999XXX Mar del Plata InternationalB78 Sicilian, Dragon, Yugoslav Attack, 10.castle long
7. C Sevilla vs M Acosta  1-0401999100th US OpenB07 Pirc
8. Yermolinsky vs M Acosta  1-0302000Frisco MastersB07 Pirc
9. Martin Salinas vs M Acosta  0-138200132nd OpenB04 Alekhine's Defense, Modern
10. M Acosta vs I Vargas  0-133200132nd OpenA08 King's Indian Attack
11. F Nava vs M Acosta  0-136200132nd OpenC26 Vienna
12. M Acosta vs L Rodi  1-043200132nd OpenA04 Reti Opening
13. G Soppe vs M Acosta  1-029200132nd OpenE12 Queen's Indian
14. M Acosta vs D Mussanti  0-136200132nd OpenD37 Queen's Gambit Declined
15. E Lima vs M Acosta 0-168200132nd OpenD96 Grunfeld, Russian Variation
16. M Acosta vs E Paris  1-020200132nd OpenD37 Queen's Gambit Declined
17. V M Mikhalevski vs M Acosta  1-0252011Canadian openA52 Budapest Gambit
18. N Castaneda vs M Acosta  ½-½602011Canadian openB27 Sicilian
19. M Meszaros vs M Acosta  1-0422011Canadian openB07 Pirc
20. M Acosta vs A Kuindzhy  0-132201121st World Seniors ChampionshipA00 Uncommon Opening
21. M Acosta vs M Leskovar  0-139201121st World Seniors ChampionshipB06 Robatsch
22. J Sarkar vs M Acosta  1-0432013London Chess Classic OpenD70 Neo-Grunfeld Defense
23. M Acosta vs P Haddock  1-0692013London Chess Classic OpenD03 Torre Attack (Tartakower Variation)
24. Qilin Bao vs M Acosta  1-0382013London Chess Classic OpenC26 Vienna
25. M Acosta vs M Josse  0-1342013London Chess Classic OpenA07 King's Indian Attack
 page 1 of 2; games 1-25 of 48  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Acosta wins | Acosta loses  

Kibitzer's Corner
May-31-14  zanzibar: It's likely that the games of the two have been combined.

The Argentinian is currently inactive, with the higher rating of 2000 (despite being younger - dob 1958 vs. dob 1949).

That would make the 2013 player the American (rating 1981).

Most likely the US and Canadian events are the American, and the Argentinian events (32nd Open and Mar del Plata) are the Argentinian.

The American seems to travel to the senior tournaments, as said, the 2013 tournament due to active status, and the 2011 tournament as shown here:

The Argentinian has been inactive since 2010-May according to here:

FIDE id's
American: 2008629
Argentian: 106860

Gheesh, I hope there aren't too many more of these cases around!

Sep-25-14  ljfyffe: Yes, we wouldn't want to be accosted again.
Premium Chessgames Member
  whiteshark: Great performance in Bad Wiessee so far.
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