Finally! Our rating system is there! We computed player ratings based on all tournaments from the past two years, a total of around 1700 games. You can now compare your rating with others and see where you stand!

The rest of this post will contain some basic information about the rating system. We will also include some statistics etc. 🙂

First things first, a couple of questions you might have when you see the ratings:

Who is included in the leaderboard?

Only players that played at least one tournament in the last year are included on the leaderboard.

Who is "anonymous"?

Anonymous players are players who only played before the ETH Chess Championship in 2024. Since we did not ask for permission to publish names in the leaderboard before this tournament, we did not include their names.

Why can I not see my name?

You have not played a tournament in the last academic year or you did not play after the ETH Chess Championship. If the latter is the case, you can contact us and we will de-anonymize your name on the leaderboard.

Why is there a question mark behind my rating?

You have played less than 12 games in our tournaments. Your rating is therefore considered provisional.

Can you please exclude my name from the leaderboard?

Of course! Just contact us and we will remove your name!

Where can I register a rated game played during a casual event?

Easy! Just fill in the form on this page: https://schwarzerkonig/rated-game/

Okay, apart from those question, there are a couple more things I want to tell you about the ratings before you can dive into them 🙂

Yes, your rating can change even if you did not play in the last tournament.

Since players do not play a lot of games, we have to be a bit smarter about our rating system than usual. This means that when deciding on the new rating, our system also looks back and retroactively changes your rating. For example, if the opponent that beat you last time suddenly gains a lot of rating in the new tournament, you will get some rating back as well!

No, do not compare your rating with your Lichess/Chess.com/FIDE Rating.

You should only compare your Polyrating with other Polyratings. It is not supposed to mimic any other rating system.

Rank	Name	Rating	Wins	Losses	Draws
1	Theo Stijve	2423	46	4	5
2	Noah Fecker	2397	14	1	1
3	Joly Julien	2333	13	2	1
4	Olivier Tschopp	2324	19	2	2
5	Nidal Hevi Oğur	2313 (?)	7	0	0
6	Vincent Lou	2254	34	9	1
7	Anton Hul	2243	50	10	6
8	Kirill Zaitsev	2240	32	7	6
9	Sinan Deveci	2061	25	9	0
10	Michael Bühler	2056 (?)	6	3	0
11	Nicolás Piro	2053 (?)	4	1	2
12	Milko Bakalov	2049	13	5	3
13	Tamerlan Begdullayev	2047 (?)	5	2	2
14	Davide Guidobene	1996	8	3	1
15	Luca Valsecchi	1989 (?)	4	1	2
16	Jonas Menzi	1988 (?)	5	2	2
17	Gleb Krivovyaz	1979 (?)	5	4	0
18	Ruslan Shumilov	1972	10	4	1
19	Yun Pan	1968	68	28	6
20	Max Newsome	1963	38	17	3
21	Yven Kius	1931	18	8	3
22	Philip Christoph	1931 (?)	5	4	0
23	Hongwei Zheng Shi	1918 (?)	5	2	0
24	Batuhan Iliev	1910 (?)	4	2	1
25	Calvin Chiu	1905	9	2	3
26	Evan Quistad	1903 (?)	5	4	0
27	Claudio Boegli	1896 (?)	3	2	2
28	Florian Stäuble	1891	9	5	0
29	Lorenzo Vettor	1885	36	16	4
30	Chaojie Li	1868	12	8	4
31	Jasper Dekoninck	1860	15	7	4
32	Amirreza Nikoo	1853 (?)	5	2	0
33	Menderes Eroglu	1852	22	11	3
34	Hongwei Zheng	1825	14	8	1
35	Philip Olson	1825	16	10	2
36	Ved Bhatawadekar	1820	8	6	0
37	Writabrata Roy	1815 (?)	5	2	0
38	Nils Koltzenburg	1805	8	7	1
39	Dorian Quelle	1804	33	20	3
40	Gary Hoppeler	1802	23	13	2
41	Max Baharev	1748	8	7	1
42	Ákos Imolay	1733 (?)	5	2	0
43	Federico Guglielmotti	1724	26	17	1
44	Tim Vaughan-Whitehead	1717	20	15	1
45	Mark Shen	1694	14	14	2
46	Giulio Abreu	1692 (?)	4	3	0
47	Lawrence Scafuri	1686	12	10	8
48	Miguel Orbegozo Rodriguez	1672	9	7	0
49	Anton De Ruig	1670	14	11	2
50	Luwai Appels	1661 (?)	4	3	0
51	Joly Fabrice	1658 (?)	4	5	0
52	David Olival Ferreira	1654	16	10	1
53	Marcell Gabor Meszaros	1653 (?)	4	3	0
54	Alexandre Terrail	1633	19	17	3
55	Ana Marija Vego	1628	33	30	4
56	Geray Memetov	1628 (?)	4	2	0
57	Krithik Chockalingam	1625	8	6	0
58	Béla Imre Kammermann	1622 (?)	4	3	0
59	Denis Hallulli	1621 (?)	4	4	0
60	Jesus Jair Reyes Gutierrez	1620	11	10	0
61	Julien Delattre	1618	5	6	2
62	Frehner Thomas	1609	14	16	0
63	Mehmet Arslan	1584 (?)	4	3	0
64	Uri Kreitner	1579 (?)	2	3	0
65	Tom Crossley	1578	7	7	0
66	Alexander Gibbert	1575 (?)	5	4	0
67	Giulio Tamburi	1575 (?)	3	4	2
68	Onno Riedel	1564	15	17	1
69	Oliver Rutkowski	1553	12	13	0
70	Emilio Grandinetti	1553	19	23	1
71	Santiago Llobell Bartret	1552 (?)	3	3	1
72	Sander de Haan	1545 (?)	2	3	2
73	Joshua Mueller	1542	6	7	1
74	Silas Tapernoux	1536 (?)	3	3	1
75	Jorin Strahl	1525	8	11	2
76	Bryan Antony	1517 (?)	3	4	0
77	Zoran Dragnic	1516	17	22	3
78	Peter Feller	1511	7	7	2
79	Giovanni Ottoboni	1510	14	21	1
80	Néstor Cordero Sanchez	1506 (?)	3	3	1
81	Chris Hartl	1505	8	12	1
82	Eduarda Assuncao	1502 (?)	2	5	0
83	Neryvaldo Galvao	1492	23	31	2
84	Popovici Liviu Daniel	1486 (?)	4	5	0
85	Roy Liu	1468 (?)	3	6	0
86	Laurent Zheng	1459 (?)	2	4	0
87	Viktor Heitmann	1451 (?)	3	4	0
88	Fernando Giraudo	1448 (?)	3	4	0
89	Felix Kloer	1446 (?)	3	4	0
90	Luis felipe prates cattelan	1445	8	6	0
91	Igor pradhan	1432 (?)	2	2	0
92	Pablo Petersen	1432	5	7	1
93	Vlad Ciuleanu	1424	7	8	0
94	Raffaele Lanini	1421	5	9	2
95	Isabel Andrea Almasan	1419 (?)	3	4	0
96	Yunes mouhib	1413 (?)	3	2	1
97	Benedikt Hemp	1412 (?)	3	4	0
98	Orion Kiser	1400 (?)	3	3	1
99	Mirco Paul	1392	8	14	0
100	Lorenzo Benedetti	1385	4	8	1
101	Nahin Kahn	1384 (?)	3	3	0
102	Yann Spillmann	1380	16	31	3
103	Ricard Pozo Guti	1380 (?)	2	5	0
104	Florian Landis	1378	4	9	0
105	Ziya teleti	1378	6	8	0
106	Nahin Khan	1376	11	15	0
107	Younes Mouhib	1374	7	14	0
108	Mikel Escartin Lindner	1374 (?)	3	4	0
109	Ilia Moghayer	1374 (?)	2	4	1
110	David Wermuth	1373 (?)	2	5	0
111	Andreas Buchheit	1370 (?)	3	3	1
112	Huaiqian Liu	1366 (?)	2	6	1
113	Timo Rurack	1353 (?)	3	4	0
114	Konstantinos Kiori	1352 (?)	3	4	0
115	Leopold Reigl	1349	7	13	2
116	Gabriela Maciak	1335 (?)	3	6	0
117	Ahmad Mahmood	1334	15	23	4
118	Martin Soldani	1332	10	18	0
119	Arthur Colombini Gusmao	1308 (?)	2	5	0
120	Diana Begdullayeva	1297 (?)	2	7	0
121	Rushil Chinnakaveti	1296 (?)	3	4	0
122	Karina Begdullayeva	1293 (?)	2	6	0
123	Christoph Ribbe	1290 (?)	3	4	0
124	Matthias Ramsauer	1285 (?)	3	4	0
125	Noé Stammbach	1262	4	14	1
126	Alessandro bifulco	1237 (?)	2	5	0
127	Laura Alilovic	1236	7	17	0
128	Manthan Gadhia	1233 (?)	3	4	0
129	Ruslan Pichuk	1219 (?)	2	4	0
130	Fabian Egger	1211 (?)	1	5	1
131	Aurèle Huillet	1208	4	11	0
132	Nicolas Bickel	1208 (?)	2	5	0
133	Alex Savca	1206 (?)	2	5	0
134	Philippe Walcher	1204 (?)	1	5	1
135	Giorgos Zachariou	1201 (?)	2	5	0
136	Robin Rudin	1160 (?)	2	4	1
137	Merlin Weiss	1076 (?)	2	5	0
138	Magnus Angehrn	1057 (?)	2	5	0
139	Lukas Kaldune	1022 (?)	1	5	1
140	Marvin Winzap	998 (?)	1	5	0
141	Maximilian Kalcher	977 (?)	1	5	0
142	Lenny Schürch	914 (?)	0	5	0
143	Sarah Morach	870 (?)	0	6	0
144	Emanuel Frank	846	2	11	0
145	Muhammad Sharjeel	743 (?)	0	6	0
146	benjamin dropmann	603 (?)	0	7	0

A (small) analysis of the ratings

I will not dive into the mathematical details of the rating system here. In case you are interested, the rating system follows this paper with some additional improvements for speed and stability purposes. Our code base is available here.

Since plots say more than a 1000 words, let’s just look at some plots 🙂 Below, you can see three plots. The first shows the distribution over ratings and the second shows the win rate by color. The last plot shows the likelihood that you win a game based on the rating difference with your opponent. You can see both the observed probability (based on our games) and the one predicted by the rating system.