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	2418	46	4	5
2	Joly Julien	2331	13	2	1
3	Olivier Tschopp	2309	14	2	0
4	Vincent Lou	2275	29	7	1
5	Kirill Zaitsev	2238	27	5	6
6	Anton Hul	2237	50	10	6
7	Mateo Rodriguez Polo	2178	21	6	2
8	Matej Jusup	2166	22	6	2
9	Michael Bühler	2055 (?)	6	3	0
10	Milko Bakalov	2053	8	3	3
11	Sinan Deveci	2051	25	9	0
12	Tamerlan Begdullayev	2046 (?)	5	2	2
13	Subramanian Ramasubramanian	2044	16	4	1
14	Alp Hidiroglu	2013 (?)	4	1	2
15	Thomas Allard	2008	14	7	2
16	Yun Pan	1992	64	25	6
17	Jonas Menzi	1989 (?)	5	2	2
18	Marco Pastore	1986 (?)	3	1	3
19	Gleb Krivovyaz	1979 (?)	5	4	0
20	Luca Valsecchi	1978 (?)	4	1	2
21	Max Newsome	1967	29	13	2
22	Ruslan Shumilov	1963	10	4	1
23	Cledion Lika	1959 (?)	4	3	0
24	Yven Kius	1924	18	8	3
25	Philip Christoph	1924 (?)	5	4	0
26	Jan Selinga	1902	9	4	0
27	Evan Quistad	1898 (?)	5	4	0
28	Ritvik Radhakrishnan	1882	17	10	3
29	Fabian Fong Schmid	1877	9	4	1
30	Chaojie Li	1863	12	8	4
31	Jasper Dekoninck	1851	15	7	4
32	Menderes Eroglu	1846	22	11	3
33	Giacomo Colombo	1845	36	20	3
34	Amirreza Nikoo	1844 (?)	5	2	0
35	Davide Guidobene	1834 (?)	3	1	1
36	Florian Stäuble	1829 (?)	4	3	0
37	Philip Olson	1808	16	10	2
38	Dorian Quelle	1805	29	17	3
39	Menderes eroğlu	1803 (?)	7	4	0
40	Gary Hoppeler	1790	23	13	2
41	Nils Koltzenburg	1789	8	7	1
42	Anna Adzic	1785	18	11	2
43	Marcus Imris	1780	40	24	4
44	Tarek Souissi	1769	8	5	1
45	Amit Sant	1757 (?)	4	3	0
46	Max Baharev	1742	8	7	1
47	Ákos Imolay	1733 (?)	5	2	0
48	Maximilian von Willich	1725 (?)	7	4	0
49	Tim Vaughan-Whitehead	1706	20	15	1
50	Flurin Yenigün	1705 (?)	4	3	0
51	Krithik Chockalingam	1703 (?)	4	3	0
52	Mark Shen	1687	14	14	2
53	Lawrence Scafuri	1686	6	6	4
54	Popovici Daniel	1679 (?)	4	2	1
55	Federico Guglielmotti	1676	21	15	1
56	Anton De Ruig	1665	14	11	2
57	Miguel Orbegozo Rodriguez	1659	9	7	0
58	David Olival Ferreira	1657	16	10	1
59	Fabio Rentsch	1654 (?)	6	5	0
60	Joly Fabrice	1646 (?)	4	5	0
61	Ana Marija Vego	1634	33	30	4
62	Frehner Thomas	1631	11	12	0
63	Daniel Richter	1631 (?)	4	3	0
64	Michael Schröder	1631 (?)	3	3	1
65	Alexandre Terrail	1625	19	17	3
66	Federico Arangath	1624	7	6	1
67	Geray Memetov	1623 (?)	4	2	0
68	Christoph Campora	1614	6	6	2
69	Michael Klein	1578 (?)	3	3	1
70	Robert Jahnke	1576 (?)	2	2	3
71	Jonas He	1575	11	9	1
72	Alexander Gibbert	1575 (?)	5	4	0
73	Giulio Tamburi	1572 (?)	3	4	2
74	Jesus Jair Reyes Gutierrez	1568 (?)	4	3	0
75	Asaf Amitai	1564	11	12	2
76	Onno Riedel	1555	15	17	1
77	Guohong Zhang	1550 (?)	3	4	0
78	Emilio Grandinetti	1546	19	23	1
79	Noah Meyer	1545	10	10	0
80	David Oort ALonso	1542	7	7	0
81	Oliver Rutkowski	1534	12	13	0
82	Joshua Mueller	1530	6	7	1
83	Luis felipe prates cattelan	1529 (?)	5	2	0
84	Oliver Lucas Eggenberger	1525 (?)	3	3	1
85	Darius Mathis	1524	12	18	0
86	Oliver Eggenberger	1523 (?)	3	4	0
87	Jacopo Bottoni	1520	9	9	2
88	Stefano Rossi	1518	5	7	2
89	Peter Feller	1504	7	7	2
90	Zoran Dragnic	1499	14	19	2
91	Néstor Cordero Sanchez	1497 (?)	3	3	1
92	Maywand Akthari	1495 (?)	3	4	0
93	Kenny Lay	1493	13	15	0
94	Lorenzo Brini	1493 (?)	3	3	1
95	Alexander Meili	1489	6	7	1
96	Popovici Liviu Daniel	1486 (?)	4	5	0
97	Giovanni Ottoboni	1484	11	17	1
98	Massimiliano Scarpa	1483 (?)	5	5	1
99	Jorin Strahl	1483	5	7	2
100	Ramon Alhambra	1482	16	16	3
101	Selim Bucher	1478 (?)	3	4	0
102	Neryvaldo Galvao	1470	20	27	2
103	Roy Liu	1470 (?)	3	6	0
104	Malik Ibrahim Awad	1467	4	7	3
105	Andreas Spanopoulos	1466	8	8	0
106	Chris Hartl	1461	5	9	0
107	Fernando Giraudo	1461 (?)	3	4	0
108	Tetsu Guadagni	1457 (?)	3	4	0
109	Ioan Popescu	1450 (?)	2	4	0
110	Benedict Himp	1448 (?)	2	5	0
111	Younes Mouhib	1447	4	10	0
112	Matteo Zuber	1434 (?)	2	5	0
113	Mert Ünsal	1431 (?)	3	3	1
114	Martin Soldani	1429	9	12	0
115	Igor pradhan	1422 (?)	2	2	0
116	Joshua Dreier	1411	6	8	0
117	Yunes mouhib	1407 (?)	3	2	1
118	Mirco Paul	1400	8	14	0
119	Raffaele Lanini	1395	5	9	2
120	Luka Vego	1393 (?)	3	4	0
121	Orion Kiser	1388 (?)	3	3	1
122	Yann Spillmann	1377	16	31	3
123	Alexander Martinez Ciani	1375	10	12	2
124	Nahin Khan	1375	11	15	0
125	Mikel Escartin Lindner	1366 (?)	3	4	0
126	Florian Landis	1365	4	9	0
127	Max Hürlimann	1364 (?)	2	5	0
128	Huaiqian Liu	1354 (?)	2	6	1
129	Paschoud Jérôme	1352	5	9	0
130	Lorenzo Benedetti	1346	4	8	1
131	Timo Rurack	1337 (?)	3	4	0
132	Julien Delattre	1331 (?)	1	4	1
133	Gabriela Maciak	1326 (?)	3	6	0
134	Ahmad Mahmood	1324	15	23	4
135	Leopold Reigl	1310	4	9	2
136	Gennaro Tetsu Guadagni	1308	5	9	0
137	Arthur Colombini Gusmao	1305 (?)	2	5	0
138	Rushil Chinnakaveti	1297 (?)	3	4	0
139	Juan Garcia Amboage	1293	5	10	1
140	Karina Begdullayeva	1290 (?)	2	6	0
141	Christoph Ribbe	1285 (?)	3	4	0
142	Diana Begdullayeva	1282 (?)	2	7	0
143	Matthias Ramsauer	1280 (?)	3	4	0
144	Laura Alilovic	1240	7	17	0
145	Noé Stammbach	1239	4	14	1
146	Alessandro bifulco	1232 (?)	2	5	0
147	Nicolas Bickel	1213 (?)	2	5	0
148	Aurèle Huillet	1208	4	11	0
149	Osman Yasar	1207 (?)	2	5	0
150	Vijay Deshmukh	1196 (?)	2	7	1
151	Jan Hirth	1191 (?)	2	3	0
152	Michiel Swerts	1171 (?)	1	2	0
153	Michele Dalle Rive	1166 (?)	1	5	0
154	Sebastian Pfaff	1166 (?)	2	4	0
155	Denis Gadient	1149 (?)	1	3	0
156	Rainer Büchi	1135 (?)	1	6	0
157	Joscha Rotzer	1119 (?)	0	4	1
158	Timosh Rueff	1108 (?)	1	3	0
159	Tom Claikens	1092 (?)	1	5	0
160	Magnus Angehrn	1056 (?)	2	5	0
161	Kilian	1010 (?)	0	2	0
162	Auguste Darracq Paries	999 (?)	1	6	0
163	Marvin Winzap	988 (?)	1	5	0
164	Maximilian Kalcher	982 (?)	1	5	0
165	Felix Boltes	958 (?)	0	3	1
166	Edwin Albrecht	949 (?)	0	3	1
167	Victor Böttchen	914 (?)	1	5	0
168	Julius Diem	839 (?)	0	7	0
169	Emanuel Frank	798 (?)	0	6	0
170	Muhammad Sharjeel	744 (?)	0	6	0
171	Nicolò Massari	701 (?)	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.