Answers.Body: <p>This is a list of Magnus Carlsen’s ratings at each of his birthdays.</p>
  
  <ul>
  <li><p>9 years old: 900<br>
  Norwegian rating.</p></li>
  <li><p>10 years old: 1645<br>
  Still Norwegian rating.</p></li>
  <li><p>11 years old: 2127<br>
  FIDE rating now.</p></li>
  <li><p>12 years old: 2250<br>
  Magnus became an FM at age 11.</p></li>
  <li><p>13 years old: 2450<br>
  Magnus became an IM at age 12.</p></li>
  <li><p>14 years old: 2581<br>
  Magnus became a GM at age 13, the youngest in the world and the second youngest ever at the time.</p></li>
  <li><p>15 years old: 2570<br>
  Magnus went through his only real slump that year.</p></li>
  <li><p>16 years old: 2698<br>
  Magnus played in his first super tournaments right around this time.</p></li>
  <li><p>17 years old: 2714<br>
  Magnus reached 2700 at 16 as the youngest ever, a record that has since been beaten by Wei Yi.</p></li>
  <li><p>18 years old: 2786<br>
  Magnus was now number four in the world.</p></li>
  <li><p>19 years old: 2801<br>
  Magnus reached 2800 at 18 as the youngest ever. The record still stands.</p></li>
  <li><p>20 years old: 2802<br>
  Magnus became the highest rated player in the world at 19, as the youngest ever.</p></li>
  <li><p>21 years old: 2826<br>
  Magnus solidified his top spot on the world rankings this year, and has held it since.</p></li>
  <li><p>22 years old: 2848<br>
  Magnus was really closing in on Kasparov’s rating record now, and surpassed it shortly after his 22nd birthday.</p></li>
  <li><p>23 years old: 2870<br>
  At this point there was a whopping 70 point difference between Magnus and the second rated player, Aronian.</p></li>
  <li><p>24 years old: 2863<br>
  Magnus peaked at 2882 (unofficially 2889) that year, the highest rating ever.</p></li>
  <li><p>25 years old: 2850<br>
  A minor dip in form.</p></li>
  <li><p>26 years old: 2853<br>
  Still number one by a good margin.</p></li>
  </ul>
  
  <p>About the app - of course there may be flaws, concerning its system there is no information. Although I don't see any reason why they would deviate from the ELO system (which is used in official FIDE games), whose formulas aren't secret and can be found even on Wikipedia.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-05-04T00:49:49.513Z
Answers.LastActivityDate: 2019-05-04T13:15:32.357Z
Answers.LastEditDate: 2019-05-04T13:15:32.357Z
Answers.UserDisplayName: exulansis
Body: <p>I played a total of 261 games against the Play Magnus app at different ages. My overall score is 144 wins, 99 losses and 16 draws. My last game was against the 10-year-old Magnus. Prior to the start of the game I was rated 1248. I won the game and my rating increased by an astonishing 133 points, so I was wondering what is the rating system used.</p>
  
  <p>Most weird is that I sometimes draw against a far higher rated Magnus and lose rating points (I once drew 26-year-old Magnus and lost 18 rating points when I was rated only 1486). Is there any explanation for that, or is it a bug in the app?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2018-02-09T14:20:32.150Z
Comments.Text: This is a customer support question.
Comments.UserDisplayName: SmallChess
Tags: <rating>
Title: What rating system does the Play Magnus app use?
ThreadText: # What rating system does the Play Magnus app use?
  
  (Asked by: username_0 on 2018-02-09)
  
  I played a total of 261 games against the Play Magnus app at different ages. My overall score is 144 wins, 99 losses and 16 draws. My last game was against the 10-year-old Magnus. Prior to the start of the game I was rated 1248. I won the game and my rating increased by an astonishing 133 points, so I was wondering what is the rating system used.
  
  Most weird is that I sometimes draw against a far higher rated Magnus and lose rating points (I once drew 26-year-old Magnus and lost 18 rating points when I was rated only 1486). Is there any explanation for that, or is it a bug in the app?
  
  **Tags:** rating
  
  > **Comments:**
  > **username_1**: This is a customer support question.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2019-05-04. Score: 4
  
  This is a list of Magnus Carlsen’s ratings at each of his birthdays.
  
  * 9 years old: 900  
    Norwegian rating.
  * 10 years old: 1645  
    Still Norwegian rating.
  * 11 years old: 2127  
    FIDE rating now.
  * 12 years old: 2250  
    Magnus became an FM at age 11.
  * 13 years old: 2450  
    Magnus became an IM at age 12.
  * 14 years old: 2581  
    Magnus became a GM at age 13, the youngest in the world and the second youngest ever at the time.
  * 15 years old: 2570  
    Magnus went through his only real slump that year.
  * 16 years old: 2698  
    Magnus played in his first super tournaments right around this time.
  * 17 years old: 2714  
    Magnus reached 2700 at 16 as the youngest ever, a record that has since been beaten by Wei Yi.
  * 18 years old: 2786  
    Magnus was now number four in the world.
  * 19 years old: 2801  
    Magnus reached 2800 at 18 as the youngest ever. The record still stands.
  * 20 years old: 2802  
    Magnus became the highest rated player in the world at 19, as the youngest ever.
  * 21 years old: 2826  
    Magnus solidified his top spot on the world rankings this year, and has held it since.
  * 22 years old: 2848  
    Magnus was really closing in on Kasparov’s rating record now, and surpassed it shortly after his 22nd birthday.
  * 23 years old: 2870  
    At this point there was a whopping 70 point difference between Magnus and the second rated player, Aronian.
  * 24 years old: 2863  
    Magnus peaked at 2882 (unofficially 2889) that year, the highest rating ever.
  * 25 years old: 2850  
    A minor dip in form.
  * 26 years old: 2853  
    Still number one by a good margin.
  
  About the app - of course there may be flaws, concerning its system there is no information. Although I don't see any reason why they would deviate from the ELO system (which is used in official FIDE games), whose formulas aren't secret and can be found even on Wikipedia.
  
  
  ---
  
  