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Wesley So
W So 
Photograph copyright © 2017, used by permission.  
Number of games in database: 970
Years covered: 2003 to 2017
Last FIDE rating: 2812 (2759 rapid, 2791 blitz)
Highest rating achieved in database: 2822

Overall record: +294 -74 =375 (64.8%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database. 227 exhibition games, blitz/rapid, odds games, etc. are excluded from this statistic.

With the White pieces:
 Sicilian (65) 
    B90 B42 B67 B33 B93
 Ruy Lopez (58) 
    C67 C65 C89 C78 C96
 Slav (28) 
    D10 D12 D17 D11 D15
 King's Indian (27) 
    E99 E60 E84 E67 E70
 Queen's Gambit Declined (27) 
    D37 D31 D38 D35 D39
 French Defense (23) 
    C11 C10 C18 C17 C14
With the Black pieces:
 Sicilian (86) 
    B33 B30 B40 B90 B23
 Ruy Lopez (39) 
    C65 C67 C80 C77 C78
 Grunfeld (36) 
    D85 D70 D86 D78 D91
 Slav (30) 
    D11 D12 D15 D10 D17
 English (27) 
    A15 A18 A14 A13 A10
 French Defense (25) 
    C07 C11 C01 C18 C05
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   W So vs Ding Liren, 2015 1-0
   W So vs Kasparov, 2016 1-0
   W So vs Akobian, 2016 1-0
   W So vs M Mahjoob, 2007 1-0
   J Xiong vs W So, 2017 0-1
   W So vs M Prusikin, 2006 1-0
   Ivanchuk vs W So, 2015 0-1
   W So vs F El Taher, 2006 1-0
   W So vs Kamsky, 2016 1-0
   Caruana vs W So, 2015 0-1

NOTABLE TOURNAMENTS: [what is this?]
   Dubai Open (2008)
   Corus Group C (2009)
   Millionaire Chess (2014)
   Tata Steel (2017)
   9th Edmonton International (2014)
   Reykjavik Open (2013)
   US Championships (2015)
   Tata Steel (2015)
   Millionaire Chess (2015)
   French Team Championship (2015)
   Chess Olympiad (2016)
   World Junior Championship (2008)
   World Cup (2009)
   World Cup (2015)
   World Junior Championship (2007)

GAME COLLECTIONS: [what is this?]
   wesley so and other gm s well games by DIONPOGIME
   Wesley So's best games by shintaro go
   WESLEY SO's best games by iking
   Wesley So: The Road To Top by penismightier
   So: the future Champion by Zhbugnoimt
   Match So! by amadeus
   RPaterno1's favorite games ("Ramon's Lab") by RPaterno1
   Nina Myers' collected Sogasms by Nina Myers
   World Cup 2009 by GM Wesley So by LaFreak III
   Manuel G. Vergara's favorite games by Manuel G. Vergara

   Jobava vs W So (Jul-02-17) 0-1, blitz
   Anand vs W So (Jul-02-17) 1-0, blitz
   W So vs Kramnik (Jul-02-17) 1/2-1/2, blitz
   M Vachier-Lagrave vs W So (Jul-02-17) 1-0, blitz
   W So vs Ivanchuk (Jul-02-17) 1/2-1/2, blitz

Search Sacrifice Explorer for Wesley So
Search Google for Wesley So
FIDE player card for Wesley So

(born Oct-09-1993, 23 years old) Philippines (federation/nationality United States of America)

[what is this?]

Born in Las Pinas, Philippines, Wesley So is a Filipino/American chess prodigy who attained the GM title at the age of 14 years, 1 month and 28 days. That made him the youngest GM in the world at that time. He was the Philippines' youngest ever International Master, youngest ever Grandmaster and the youngest ever National Champion.


Wesley was only six when he learned the movement of chess pieces across a board. After memorizing them, chess set in hand, he explored the streets of his neighborhood daring people to play with him. At nine years old he began to compete in local, junior chess tournaments.

His first major tournament win was taking 1st place at the 2003 Philippine National Chess Championships for the under 10 age group.

So, was awarded his first GM norm at the Offene Internationale Bayerische Schach Meisterschaft, in Bad Wiessee, Germany. He acquired his second GM norm in the World Junior Championship (2007) in Yerevan, Armenia, and capped his year by earning his third GM norm at the 3rd Prospero Pichay Cup International Open in the Philippines. At the age of fourteen years, one month and twenty eight days, FIDE awarded him the title of Grandmaster, making him the ninth youngest chess grandmaster. He was then ranked strongest player in the world under sixteen years old.

In 2006 at the age of twelve years and ten months Wesley So became the youngest ever Filipino International Master and the youngest member of the national men's team to participate at the 37th Chess Olympiad in Turin, Italy.

In 2007, Wesley So went on to become the youngest National Junior Open Chess Champion and won the gold medal on board one, at the World Under16 Team Championships.

So won the title in the Dubai Open (2008), "The Sheikh Rashed Bin Hamdan Al Maktoum Cup", in the United Arab Emirates, and set a record as the youngest winner in the 10-year history of the Cup. Later that year, Wesley So was rated 2610 and was the youngest player in the history of the game to break the 2600 Elo barrier, surpassing the record previously held by Magnus Carlsen.

In 2012 he emigrated to the United States, and in 2014 he officially shifted his chess affiliation to the USA. In March 2016, So received the $42,000 Samford Fellowship. (1) In early 2017, So partnered with veteran player and coach Vladimir Borisovich Tukmakov. (2)

As of April 2017, Wesley So is the USA's top player, as well as the #2 player in the world.

Rating and Ranking

Wesley So was the youngest player ever to cross the 2600 rating mark, 9 days before his 15th birthday, until 2013 when Chinese prodigy Wei Yi achieved the mark at the age of 14 years 5 months 23 days. In March 2013, So's rating crossed over to 2701 (the 92nd player to achieve 2700). In January 2017, So's rating was officially 2808. His April 2017 rating of 2822 makes him the 2nd strongest player in the world, behind only Magnus Carlsen.

Official Site

For more information please see:

Tournament History

2017 – USA • US Championship (2017) • St Louis
2017 – USA • Pro League • St Louis
    Champions • St Louis Arch Bishops • MVP Wesley So
2017 – NETHERLANDS • Tata Steel (2017) • Wijk Aan Zee, Rotterdam, Haarlem
    1st Place

2016 – UNITED KINGDOM • The Grand Chess Tour • London
    1st Place
2016 – UNITED KINGDOM • London Chess Classic (2016) • London
    1st Place
2016 – ISLE OF MAN • Isle of Man Open (2016) • Douglas
    Tie for 3rd Place
2016 – AZERBAIJAN • 42nd Chess Olympiad (2016) • Baku
2016 – USA • Sinquefield Cup (2016) • St Louis
    1st Place
2016 – SPAIN • IX Bilbao Chess Masters Final • Bilbao
    3rd Place
2016 – BELGIUM • Grand Chess Tour Rapid & Blitz • Leuven
    2nd Place
2016 – FRANCE • Grand Chess Tour Rapid & Blitz • Paris
    4th Place
2016 – CHINA • 4 Game Match with Ding Liren • Shanghai
    2nd Place
2016 – USA • Ultimate Blitz Chess Challenge with Garry Kasparov • St. Louis
    2nd Place
2016 – USA • US Chess Championships • St. Louis
    2nd Place
2016 – USA • Awarded The Samford Chess Fellowship • US Chess Trust
2016 – NETHERLANDS • Tata Steel Chess Event • Wijk Aan Zee
    4th Place

2015 – SPAIN • Bilbao Chess Masters • Bilbao
    1st Place – Champion
2015 – USA • Millionaire Chess • Las Vegas
    5th Place – Open
2015 – AZERBAIJAN • World Chess Cup • Baku
    4th Round
2015 – USA • Sinquefield Cup (2015) • St. Louis
    10th Place
2015 – TURKEY • Turkish Super League • Izmit
    2nd Place
2015 – GERMANY • Sparkassen Chess Meeting • Dortmund
    2nd Place
2015 – CZECH REPUBLIC • Cez Chess Trophy 4 Game Match • Prague
    1st Place
2015 – FRANCE • Top Twelve French League (CLICHY) • Petit Camargue
    2nd Place
2015 – AZERBAIJAN • Gashimov Memorial • Shamkir
    3rd Place
2015 – UNITED STATES • US Championships • St. Louis
    3rd Place
2015 – IRELAND • 22nd Bunratty Chess Festival • Bunratty
    1st Place
2015 – NETHERLANDS • Tata Steel Chess Event • Wijk Aan Zee
    Tied for 2nd Place

2014 – USA • North American Open • Las Vegas
    Open Section Champion
2014 – USA • US Chess League Champions • St. Louis
    Board One
2014 – USA • Millionaire Chess • Las Vegas
    1st Place Grand Prize Winner
2014 – USA • 3RD Noel Skelton Open • Minnesota
    1st Place
2014 – NORWAY • 41ST Chess Olympiad
    Coach for US team
2014 – ITALY • ACP Golden Classic
    1st  Place (Rated 2755)
2014 – CANADA • 9th Edmonton International (2014)
    2nd Place
2014 – USA • National Open Blitz Sectionals Las Vegas International Chess Festival
    1st Place
2014 – CUBA • Capablanca Memorial
    1st Place
2014 – USA • The Bill Wright Saint Louis Open
    Tie for 1st Place
2014 • USA • Final Four of College Chess
    1st  Place (Webster Team)
2014 • NETHERLANDS • Tata Steel Chess – Wijk Aan Zee
   Tie for 4th place

2013 – USA • Pan American Intercollegiate Chess Championship
    1st Place (Webster Team A)
2013 – TURKEY • World Chess Team Championship
    Coach for U.S.A. Team
2013 – NETHERLANDS • 17TH Unive Chess Tournament Hoogeveen
    1st Place
2013 – USA • 2ND Noel Skelton Open
    1st Place
2013 – NORWAY • World Cup
    Lost in 2nd round (64 players) knockout
2013 – RUSSIA • 27TH Summer Universiade in Kazan, Russia
    Gold Medal
2013 – USA • Las Vegas International Chess Festival
    Triple Winner
2013 – CANADA • Calgary International Chess Classic and Blitz Championship
    1stPlace – Classic
    1st Place – Blitz
2013 – USA • The Bill Wright Saint Louis Open
    Tie for 1st Place
2013 – USA • Final Four of College Chess
    1st Place
2013 – ICELAND • The Reykjavik Open 2013
    Tie for 1st Place
    1st  player from the Philippines and the 1st player in the 67-year history of American Collegiate Chess to break the 2700 rating mark
    No. 2-ranked junior chess player in the world
2013 – PHILIPPINES • Asian Zonal 3.3 Chess Championship
    2nd  Place
    Qualifies in 2013 World Cup
2013 – USA • Pan American Intercollegiate Chess Championship
    Tie for 1st Place (Webster Team A & B)

2012 – USA • SPICE Blitz 2012
    1st Place
2012 – USA • The 3RD Annual Thanksgiving Open
    Tie for 2nd Place
2012 – USA • 2012 SPICE CUP Group A
    4th  Place
2012 –’s 7th Blitz Match of Death • Wesley So vs. Ray Robson
    Defeated GM Ray Robson
2012 – CANADA • Quebec Open Chess Championship
    1st Place
2012 – CANADA • Toronto International Chess Championship
    1st Place
2012 – USA • Charity Chess Match Philippine Consulate 
    Organized by the Filipino-American Chess Club of New York
    Acting Deputy Permanent Representative of the Philippine Mission to the UN in New York, Eduardo de Vega, joined the other chess players.
    20-chess players simultaneous
2012 – USA • 40TH Annual World Open 2012 – Blitz Championship
    Tie for 1st Place
2012 – USA • 40TH Annual World Open 2012
    3rd Place
2012 – FRANCE • French League TOP 12
    Clichy members: Ivanchuk, Van Wely, Wesley So, vice Jakovenko, Nispeanu and Maze
    Emerged 2012 champion – undefeated in 10 games
2012 – VIETNAM • 11TH Asian Individual Open/Blitz Chess Championships
    Undefeated in 18 games, 9 in the main event, and 9 in the Blitz Championship
    First place – Blitz
2012 – USA • The 28TH North American Masters: Georg Meier vs. Wesley So
    4 game classical match followed by 4 game rapid match (Tie)

2011 – INDONESIA • 26TH Southeast Asian Games
    Gold Medal – Finished undefeated with 9 points in the Blitz chess competition
    Silver Medal – Individual Standard
2011 – INDIA • Airports Authority of India Intl. Grandmasters Chess Tournament 
    5 points 4th place
2011 – INDONESIA • 17TH Asian Cities Chess Team Championship
    Tie for  2nd
2011 – PHILIPPINES • Battle of Grandmasters
2011 – SPAIN • Training with World’s #1 Chess player GM Magnus Carlsen
    GM Magnus Carlsen
2011 – RUSSIA • Qualifying World Blitz
    5th  place/ 194-player field. Qualified for World Blitz
2011 – NETHERLANDS • 73rd Corus Chess, Grandmasters Group B Tata Steel
    4th  place

2010 – CHINA • The 16TH Asian Games
    Silver Medal for Team Philippines
2010 – USA • 2010 SPICE CUP Group A
    Tie for 2nd  Place
2010 – RUSSIA • 39TH World Chess Olympiad 2010
    RP Team: Rank 50th (149 teams)
2010 – PHILIPPINES • Campomanes Memorial Cup
    7th place
2010 – PHILIPPINES • Battle of Grandmasters
    1st Place
2010 – NETHERLANDS • NH Chess Tournament Rising Stars vs Experience
    Rising stars 26 (1st)
    Experience 24
2010 – SWITZERLAND • 2010 Biel Young Grandmasters Chess Championship
    5th Place
2010 – PHILIPPINES • 2010 ASIAN Continental Chess Championships
    2nd Place
    Qualify for World Cup
2010 – RUSSIA • World Blitz Championship Prelim
   62nd place / 156-player field
2010 – RUSSIA • Aeroflot Open 2010, Group A1
    Top Junior Award
    11th place / 80-player field
2010 – NETHERLANDS • 72ND Corus Chess 2010, Grandmasters Group B
    5th Place

2009 – RUSSIA •2009 World Chess Cup
    Final 16
    Defeated Gadir Guseinov and had victories over former world championship contenders Vassily Ivanchuk (ELO 2739) and Gata Kamsky (ELO 2695)
2009 – USA • Spice Cup Group A
    Tie for 2nd Place
2009 – USA • 30-Board Simul with Fresno Chess Club
2009 – VIETNAM • Zone 3.3 Fide World Chess Championship
    Medal: Silver
    2nd Place
    Qualify for World Cup
2009 – PHILIPPINES • Asian Continental Chess Open Championship
    Rank: 21st place (85 players)
    Tie for 4th Place
2009 – CHINA • Chinese Chess League (for Bank of Qingdao Team)
    Team: Rank 9 Scored 4/6
2009 – Philippines • Battle of Grandmasters
    1st Place
2009 – RUSSIA • Aeroflot Open 2009, Group A1
    Top Junior Winner
2009 – NETHERLANDS • 71st Corus Group C (2009)
    1st place/Qualified for B Group
    "Beste Jone Talente" Award

2008 – UAE • 1ST Asian Chess Club Championship
    Individual: Board 1 Gold Medalist
    Team: 4th place
2008 – GERMANY • 38TH World Chess Olympiad 2008
    RP Team: Rank 46th (100 teams)
    Best Olympiad performer in RP
2008 – PHILIPPINES • 4TH Pichay Cup International Open
    Tie for 3rd Place (68 players)
    Ranked 5th
2008 – PHILIPPINES • 3RD President GMA Cup International Open
    Tie for 5th Place (72 players)
2008 – VIETNAM • 1ST Dragon Capital Chess Open/1ST ASEAN Grand Prix
    Tie for 2nd (30 players)
    2nd  in ASEAN Grand Prix
    Team: 3rd Place (26 teams)
2008 – TURKEY • World Youth U-16 Chess Olympiad
    Individual: Gold Medal
    Team: 3rd  Place (26 teams)
2008 – TURKEY • World Junior Chess Championship
    9th Place (109 players)
    Tie for 8th  — 14th Place
2008 – PHILIPPINES • 1ST Subic Bay International Open Chess Championship
    2nd  Place
2008 – PHILIPPINES • 2ND Philippine Open International Chess Championship
    10th  Place (73 players)
2008 – INDONESIA • 2008 Japfa Chess Festival
    1st Place
2008 – UAE • 10TH Dubai Open Chess Championship
    1st  Place
2008 – PHILIPPINES • Battle of Grandmasters
    1st Place
2008 – INDONESIA • Asean Masters Chess Circuit 2008 GM Tournament A
    4th Place

2007 – PHILIPPINES • 3RD Pichay Cup International Open
    5th Place
    3rd GM Norm
    World’s 7th Youngest GM at 14 years old
    Youngest Filipino GM in their history
2007 – PHILIPPINES • 2ND President GMA CUP International Open
    9th Place (64 participants)
2007 – MACAU • 2ND Asian Indoor Games (participated by 32 countries)
    Team Rapid Chess: 4th Place
    Team Classical Chess: 7th Place
    Team Blitz Chess: 6th Place
2007 – ARMENIA • World Junior Chess Championship
    2nd GM Norm
    Tie for 6th Place
2007 – PHILIPPINES • The 6TH Asian Individual Chess Championship
    Tie for 5th Place
2007 – SINGAPORE • World Youth U-16 Chess Olympiad
    Individual: Gold Medal
    Team: 3rd Place
2007 – PHILIPPINES • Philippine Open International Chess Championship
    Rank 15th
2007 – IRAN • 15th Asian Cities Chess Champion
    Team: 2nd (Silver Medal)
    Individual: Gold Medal for Performance Rating and Percentage Score
2007 – VIETNAM • Fide (Zone 3.3) World Chess Championship
    Tie for 3rd Place

2006 – SINGAPORE • 3rd Masters International Open Chess Tournament
    Tie for 4th Place (99 Players)
2006 – PHILIPPINES • 1ST President GMA Cup International Chess Tournament
    Top Juniors
    Tie for 6th Place
2006 – GERMANY • Offene Internationale Bayerische Shach Meisterschaft
    Tie for 2nd  Place
    1st GM Norm
    Award: Chosen by Russian Website e3e5
2006 – SPAIN • III Festival de Ajedrez Open Internacionale
    BEST Under 16 Blitz
2006 – MALAYSIA • 3rd IGB Dato’ Arthur Tan Open Chess Championship
    BEST Under-16 Player 3RD International Master Norm
2006 – ITALY • 2ND San Marino Open Internationale di Scacchi
    BEST Under-16 Player – 2nd IM Norm
2006 – ITALY • 37TH World Chess Olympiad
    Youngest RP Olympian
2006 – UAE • 8TH Dubai Open Chess Championship
    1st IM Norm

2005 – SINGAPORE • Masters/Challengers Int’l. Open Tournament
    BEST Under-12 Player
2005 – FRANCE • 12th Nice Open International
    9th Place
2005 – FRANCE • World Youth Chess Championship
    TIE 1st Place
2005 – THAILAND • 7th Asean Age-Group Chess Championship
    GOLD, "Standard Chess – Individual"
    GOLD, "Rapid Chess – Individual"
    GOLD, "Blitz Chess – Individual"
2004 – GREECE • World Youth Chess Championship
    13th Place
2004 – VIETNAM • 6th  Asian Age-Group Chess Championship
    GOLD "Standard Chess" (Individual)
    GOLD "Rapid Chess" (Individual)
    SILVER "Standard Chess" (Team)
    SILVER "Rapid Chess" (Team)

2003 – GREECE • World Youth Chess Championship
    19th Place


Last updated: 2017-05-11 00:11:52

 page 1 of 39; games 1-25 of 969  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. T Pipan vs W So 0-1262003Wch U10B33 Sicilian
2. W So vs N Galopoulos  0-1532003Wch U10C00 French Defense
3. W So vs Z Javakhadze 1-0552003Wch U10B10 Caro-Kann
4. Negi vs W So 1-0342003Wch U10B33 Sicilian
5. W So vs V Belous 1-0412003Wch U10A07 King's Indian Attack
6. D Swiercz vs W So 1-0732003Wch U10B33 Sicilian
7. Mark Ho En Tian vs W So 0-1312004ASEAN-ch5 U12B70 Sicilian, Dragon Variation
8. M Bui vs W So 0-1442004ASEAN-ch5 U12B70 Sicilian, Dragon Variation
9. W So vs Minh Doan Vu Hoang 1-0352004ASEAN-ch5 U12A07 King's Indian Attack
10. W So vs Md Omar Ak Hafizon Pg  ½-½572004ASEAN-ch5 U12B21 Sicilian, 2.f4 and 2.d4
11. Do Duc Minh vs W So 0-1202004ASEAN-ch5 U12B33 Sicilian
12. Ding Liren vs W So 1-0232004Wch U12A04 Reti Opening
13. W So vs Caruana 1-0272004WYCC - B12B21 Sicilian, 2.f4 and 2.d4
14. A Rosell vs W So 1-0432004Wch U12A80 Dutch
15. W So vs O Kanmazalp 1-0292004Wch U12B21 Sicilian, 2.f4 and 2.d4
16. W So vs Mark Ho En Tian 1-0402005ASEAN-ch6 U12B01 Scandinavian
17. I Nyzhnyk vs W So 0-1332005Wch U12B23 Sicilian, Closed
18. S Neubronner vs W So 0-1252005ASEAN-ch6 U12B33 Sicilian
19. W So vs Y Chan 1-0382005ASEAN-ch6 U12C26 Vienna
20. Firman Syah Farid vs W So 0-1422005ASEAN-ch6 U12B33 Sicilian
21. W So vs J Chung 1-0292005ASEAN-ch6 U12B01 Scandinavian
22. D Lo Kin Mun vs W So 0-1542005ASEAN-ch6 U12B33 Sicilian
23. Duy Linh Dang vs W So 0-1262005ASEAN-ch6 U12E41 Nimzo-Indian
24. Robson vs W So ½-½472005Belfort YWCC boys under 12B33 Sicilian
25. S Sjugirov vs W So 1-0332005Belfort YWCC boys under 12B30 Sicilian
 page 1 of 39; games 1-25 of 969  PGN Download
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 7998 OF 7998 ·  Later Kibitzing>
Premium Chessgames Member
  AylerKupp: <<MannyGarry> If you look at section 1.49 table 8.1.a in your link, you can see there the -800 and +800 as extreme values for rating difference dp.>

Yes, the FIDE tables cover the range 800. The original table calculated by Dr. Elo had a range of 736, with dp = 0.00 if RD < 735 and dp = 1.00 if RD > 735 appears in Dr. Elo's book "The Rating of Chessplayers, Past and Present" which was first published in 1978 although it must have been used in the first official FIDE ratings in 1970 and probably in Dr. Elo's unofficial FIDE ratings in 1966. FIDE just extended them to 800 and I use 1000 to handle even more extreme cases without having to check if the RD exceeds the limits. Since FIDE's current rating floor is 1000 and no player's rating has (yet) exceeded 2900, I could have gotten away with a range of 900 but I suspected that as soon as I did that Murphy's Law would become effective and someone's rating would exceed 2900 and I would have to extend my tables. So at least this way I think I'm safe for the time being.

But the rule of 400 (which was established in 2009) and its predecessor, the rule of 350 (which was established in April 2006) are completely artificial and arbitrary. The Rule of 350 was proposed by Anand because he (and presumably other grandmasters) did not want to lose a lot of rating points if they lost to a much lower rated player. It was seen as an incentive for top-rated GMs to play in Open tournaments when a large rating differential was possible.

John Nunn has indicated ( that the rule was introduced to prevent a player from losing rating points by winning a game. But I don't see how, using the FIDE rating Rules and Regulations, this would be possible since if RD is sufficiently large (>735), the higher-rated player's expected score would be 1.0, just like his actual score. So the worst that would happen is that if the RD is sufficiently large, the winning player would not gain any rating points even if the won. But, of course, he would lose a significant number of rating points if he drew or lost.

My opinion is: If a player with a rating much higher than his opponent doesn't want to lose any rating points, he should win the game. After all, he is expected to win. And, if he did draw or lose and therefore lost a lot of rating points, he would be grossly underrated and would stand to regain those lost rating points soon enough.

Premium Chessgames Member
  AylerKupp: <<MannyGarry> Here's my point in an example.>

I get the exact same rating changes using the FIDE formulas after rounding:

So / Carlsen rating differential = 2810 – 2822 = -12

Scoring probability = SD(-12) = 0.48286

So's rating change in case of loss = 10*(0.5 - 0.48286) = -4.8286 = -5

So's rating change in case of draw = 10*(0.5 - 0.48286) = 0.1714 = 0

So's rating change in case of draw = 10*(1.0 - 0.48286) = 5.1714 = +5

And I get the same rating changes using FIDE's Table 8.1b with only 2 digits of precision so that SD(-12) = 0.48.

The two formulas yield very similar results if the calculations are done to 4 or more significant digits. This is clear when you plot them, and I calculated a standard deviation of only 0.00812 when the results are calculated to 5 significant digits in the range of 1000 and 0.00872 in the range of 800. And, because of the rounding of the rating change to the nearest integer per section 8.67 of the FIDE Rules and Regulations, the rating change is the same.

So, yes, "It seems like ..." is an accurate observation.

One minor quibble. I think that if you're calculating So's rating change when playing Carlsen (i.e. from the viewpoint of the player) then So's rating differential should be negative; i.e. So's rating – Carlsen's rating = -12. It will, of course (at least at this moment) be positive against anyone else. Then, in order to get the right values, you need to use the formula Expected Score = 1 / (1 +10^(-RD/400)). But that's just my opinion, it makes no difference either way.

Premium Chessgames Member
  AylerKupp: <joeyj> That's the list of the 128 players that qualified for the World Cup. I have not been able to find a list of who's actually playing but I doubt that either Carlsen or Karjakin are playing since as world champion Carlsen obviously doesn't need to qualify for the 2018 Candidates Tournament and Karjakin has already qualified by virtue of losing his match against Carlsen. So their only reason for playing would be for the money. Then again, that might be a sufficient incentive.

I assume that the actual list is much longer so that, as players who qualified decline to enter, the 128-player field can be filled up with those next in line. We probably won't find out who's actually playing for another month or so.

Jul-24-17  knightF5: Magnus Carlsen To Play FIDE World Cup This does not seem good. He might be there to eliminate his most dangerous opponents without the risk of himself being eliminated in the World Championship. Strategic foresight by the world champion. Clever. If this is true, Wesley is somewhat safe however having a lifeline in December to capitalize on.
Premium Chessgames Member
  chessobserver: Thanks <AylerKupp> for the historical perspective.
Premium Chessgames Member
  dunkenchess: Bow...
Premium Chessgames Member
  OhioChessFan: ** Urgent Announcement **

We are running a Moves Prediction Contest for the Biel tournament at my forum. We got a late start advertising so the first round played earlier today won't count. Get your picks in for tomorrow's round ASAP!

Premium Chessgames Member
  dunkenchess: Chess games make Magnus happy.
Premium Chessgames Member
  jimmy77: <knightF5: Magnus Carlsen To Play FIDE World Cup This does not seem good. He might be there to eliminate his most dangerous opponents without the risk of himself being eliminated in the World Championship. Strategic foresight by the world champion. Clever. If this is true, Wesley is somewhat safe however having a lifeline in December to capitalize on.>

What complicates further the World Championship cycle, as reported in, is if Carlsen participates in the Candidates tournament....hehehe...

Premium Chessgames Member
  jimmy77: The idea of Carlsen participating in the Candidates can complicate as well Wesley's qualification to the Candidates. If Carlsen will compete in the Candidates on the basis of the average rating criterion, to ensure Wesley's qualification to the Candidates, he has to make sure that he ends the year with a higher average rating than Caruana and Kramnik.
Jul-25-17  MannyGarry: <AylerKupp: One minor quibble. I think that if you're calculating So's rating change when playing Carlsen (i.e. from the viewpoint of the player) then So's rating differential should be negative; i.e. So's rating – Carlsen's rating = -12. It will, of course (at least at this moment) be positive against anyone else. Then, in order to get the right values, you need to use the formula Expected Score = 1 / (1 +10^(-RD/400)). But that's just my opinion, it makes no difference either way.>

They are just the same.

But I like the following because I don't have to add -RD in the formula.

SoRD = OppRating - SoRating

is automatically usable to the formula:

SoExpectedScore = 1/(1 + 10^(RD/400))

Jul-25-17  knightF5: Hi Jimmy, allow me to speculate.
Name/ Aug17 Rating/ Average 8 mo/ Total 8 mo
Wesley So 2810 2815.1250 22521
Fab Caruana 2807 2814.0000 22512
Vlad Kramnik 2803 2809.7500 22478

For Kramnik to overtake Carauana’s total average on Dec 2017 FIDE rating. Granting Caruana maintains his 2807 until December.

Name/ Sep/ Oct/ Nov/ Dec/Average 12 mo
Fab Caruana 2807/2807/ 2807/2807/ 2811.6667
Vlad Kramnik 2816/ 2816/ 2816/ 2816/ 2811.8333

Kramnik has to up his rating to 2816 for the next 4 months to overtake Caruana. He can still afford to be 2815 in one of those 4 mos and still overcome Caruana.

For Kramnik to overtake both Wesley and Caruana.

Name/ Sep/ Oct/ Nov/ Dec/Average 12 mo
Wesley So 2810/ 2810/ 2810/ 2810/ 2813.4167
Fab Caruana 2807/ 2807/ 2807/ 2807/ 2811.6667
Vlad Kramnik 2821/ 2821/ 2821/ 2821/ 2813.5000

Vlad has to up his rating to 2821 Sept – Dec 17 to gain top spot rating qualifier.

Jul-25-17  knightF5: On second thought, Carlsen's participation at the World Cup may actually benefit Wesley. If Carlsen could eliminate 1 or 2 dangerous candidates would be in the likes of Mamed, Aronian or MVL. Mamed and MVL are not yet sure of topping GP. Their fates are no longer on their hands.

Wesley's chance is still on his hands - 50% of it.

Wesley may even defeat Carlsen at the World Cup.

Let Carlsen joins the World Cup!

Jul-25-17  starry2013: I don't really see Carlsen competing in the Candidates tournament at all, he would prefer surely to keep his preparation for any challenger to one side.

The World Cup is another matter entirely, it's one of the biggest chess tournaments and events whether there's qualifying places to the Candidates or not. I'm not surprised Carlsen wants to win it.

Premium Chessgames Member
  AylerKupp: I don't see Carlsen participating in the 2018 Candidates Tournament either. For one thing, he is not eligible to participate.
Premium Chessgames Member
  AylerKupp: At any rate, if Carlsen were to qualify for, enter, and win the 2018 Candidates Tournament, it would be a very one-sided World Championship match. :-)
Jul-25-17  Karpov2985: <AylerKupp> I don't think Wes gain any ELO points considering he has the 2nd highest ELO rating. Maybe you mean he gain 5 points by winning.
Premium Chessgames Member
  jimmy77: Unless the rules and guidelines governing player qualification to the Candidates as well as the Candidates tournament itself explicitly mention the exclusion of the current World Champion (sometimes, it is the obvious that is missed; taking for granted what is perceived to have already been understood by everyone), then by virtue of the qualification via average rating, Carlsen is the leading contender for qualification to the Candidates tournament.
Premium Chessgames Member
  dunkenchess: Compete or not to compete he, Magnus, will join. Do not dictate.
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  ChessHobby69: From NBC News: U.S. Chess Champion Wesley So Sets Sights on World Crown

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  iking: another busy week is soon to come ....
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  jimmy77: 6 days and 7 hours to go before the 1st round....
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  ChessHobby69: "I was surprised na pumunta siya sa Amerika but I don't blame him," Ramirez said. "If the Philippines cannot provide for his needs, talagang lilipat 'yung bata. Just like an athlete from the province, if the province cannot provide for his needs, he goes to Manila


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  WinKing: Countdown to the Sinquefield Cup...

♘Sinquefield♘Sinquefield Cup 2017♗Sinquefield♗

This tournament will run from Aug. 2nd thru Aug 12th 2017. (9 Rounds)

Participants include Anand, Aronian, Carlsen, Caruana, Karjakin, Nepomniachtchi, Nakamura, So, Svidler & Vachier-Lagrave

Average rating: 2787 - Category XXII


<<> Sinquefield Cup 2017 <>>

< 3 Prediction Contests: (Win virtual medals - Gold, Silver & Bronze) >

*** User: lostemperor - Predict the order the players will finish. Run & hosted by <lostemperor>. (3 categories to medal in) ***

**User: Golden Executive - Predict the result 1-0, 1/2, or 0-1. Run & hosted by <Golden Executive>. (3 categories to medal in)

This year will be the 11th Anniversary for this contest! (from 2007 to 2017 - 11 years running)**

*User: OhioChessFan - Predict the result 1-0, 1/2, or 0-1 & the number of moves. (4 categories to medal in). This contest is run by <chessmoron> & hosted by <OhioChessFan>.*


Also, don't forget about <chessgames> ChessBookie game for this event. She can't wait to take some or all of your chessbucks. ;)

ChessBookie Game

Don't miss out on the fun for this Super Event!!!

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