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	2383	38	3	5
2	Olivier Tschopp	2376 (?)	7	0	0
3	Joly Julien	2297 (?)	6	0	1
4	Kirill Zaitsev	2249	27	5	6
5	Anton Hul	2233	44	8	5
6	Vincent Lou	2218	22	5	1
7	Mateo Rodriguez Polo	2168	21	6	2
8	Matej Jusup	2154	22	6	2
9	Mustafa Batuhan Iliev	2137	26	7	3
10	Vincent Christien	2121	16	4	3
11	Pau Juan Bartroli	2092 (?)	6	3	0
12	Subramanian Ramasubramanian	2082	16	4	1
13	Max Newsome	2078	20	7	1
14	Milko Bakalov	2060	8	3	3
15	Yun Pan	2034	55	20	4
16	Alp Hidiroglu	2028 (?)	4	1	2
17	Marco Pastore	2027 (?)	3	1	3
18	Thomas Allard	2010	14	7	2
19	Yven Kius	1996	13	5	3
20	Markus Fasching	1981	20	9	2
21	Michael Zeller	1978 (?)	5	2	2
22	Cledion Lika	1965 (?)	4	3	0
23	Max Baharev	1942 (?)	5	2	0
24	Anton Künzi	1936	19	11	2
25	Menderes Eroglu	1936	15	4	1
26	Chaojie Li	1920	8	4	3
27	Philip Olson	1909	13	6	2
28	Jan Selinga	1908	9	4	0
29	Fabian Fong Schmid	1893	9	4	1
30	Amirreza Nikoo	1893 (?)	5	2	0
31	Ritvik Radhakrishnan	1873	17	10	3
32	Florian Stäuble	1862 (?)	4	3	0
33	Jasper Dekoninck	1850	12	6	1
34	Giacomo Colombo	1842	36	20	3
35	Ruslan Shumilov	1834 (?)	5	3	0
36	Hongwei Zheng	1833	10	6	0
37	Menderes eroğlu	1826 (?)	7	4	0
38	Dorian Quelle	1823	29	17	3
39	Marcus Imris	1792	40	24	4
40	Tarek Souissi	1785	8	5	1
41	Anna Adzic	1784	18	11	2
42	Amit Sant	1763 (?)	4	3	0
43	Ákos Imolay	1762 (?)	5	2	0
44	Alessandro Bruno	1760 (?)	5	4	0
45	Anselm Schönbächler	1739 (?)	5	3	1
46	Maximilian von Willich	1734 (?)	7	4	0
47	Krithik Chockalingam	1727 (?)	4	3	0
48	Flurin Yenigün	1723 (?)	4	3	0
49	Mark Shen	1710	10	10	1
50	Anton De Ruig	1694	10	7	1
51	Popovici Daniel	1691 (?)	4	2	1
52	Federico Guglielmotti	1683	12	8	1
53	Fionn Smith	1682	17	13	2
54	Alexandre Terrail	1674	15	12	3
55	Fabio Rentsch	1668 (?)	6	5	0
56	David Olival Ferreira	1655	16	10	1
57	Miguel Orbegozo Rodriguez	1655	9	7	0
58	Michael Schröder	1654 (?)	3	3	1
59	Ana Marija Vego	1648	29	26	3
60	Frehner Thomas	1645	11	12	0
61	Yasin Yuece	1640 (?)	5	4	0
62	Daniel Richter	1639 (?)	4	3	0
63	Federico Arangath	1637	7	6	1
64	Lukas Lewark	1627 (?)	4	4	1
65	Christoph Campora	1624	6	6	2
66	Geray Memetov	1615 (?)	4	2	0
67	Michael Klein	1590 (?)	3	3	1
68	Jonas He	1581	11	9	1
69	Asaf Amitai	1577	11	12	2
70	Robert Jahnke	1572 (?)	2	2	3
71	Felix Philipp	1566 (?)	5	4	0
72	Guohong Zhang	1566 (?)	3	4	0
73	Onno Riedel	1562	13	14	1
74	Jesus Jair Reyes Gutierrez	1559 (?)	4	3	0
75	Elia Steinfeld	1558	13	10	2
76	David Oort ALonso	1553	7	7	0
77	Noah Meyer	1551	10	10	0
78	Emilio Grandinetti	1550	15	18	1
79	Mert Unsal	1541	7	7	0
80	Dan Tecu	1539 (?)	4	4	1
81	Vladislav Koshelev	1538	17	17	0
82	Joshua Mueller	1536	6	7	1
83	Oliver Lucas Eggenberger	1534 (?)	3	3	1
84	Darius Mathis	1533	12	18	0
85	Stefano Rossi	1533	5	7	2
86	Luis felipe prates cattelan	1531 (?)	5	2	0
87	Jacopo Bottoni	1521	9	9	2
88	Pau Gallardo	1516 (?)	4	5	0
89	Oliver Eggenberger	1514 (?)	3	4	0
90	Néstor Cordero Sanchez	1513 (?)	3	3	1
91	Peter Feller	1511	7	7	2
92	Maywand Akthari	1508 (?)	3	4	0
93	Zoran Dragnic	1507	11	14	2
94	Lorenzo Brini	1504 (?)	3	3	1
95	Alexander Meili	1501	6	7	1
96	Tetsu Guadagni	1498 (?)	3	4	0
97	Malik Ibrahim Awad	1496	4	7	3
98	Jorin Strahl	1495	5	7	2
99	Massimiliano Scarpa	1492 (?)	5	5	1
100	Kenny Lay	1489	13	15	0
101	Selim Bucher	1486 (?)	3	4	0
102	Lorenzo Benedetti	1482 (?)	3	3	1
103	Ramon Alhambra	1480	16	16	3
104	Javier Alego	1478 (?)	4	5	0
105	Andreas Spanopoulos	1475	8	8	0
106	Chris Hartl	1468	5	9	0
107	Parth Kothari	1464 (?)	4	5	0
108	Valters Jēkabs Zakrevskis	1462 (?)	3	6	0
109	Fernando Giraudo	1462 (?)	3	4	0
110	Benedict Himp	1459 (?)	2	5	0
111	Oliver Rutkowski	1456	8	8	0
112	Ioan Popescu	1444 (?)	2	4	0
113	Matteo Zuber	1443 (?)	2	5	0
114	Mert Ünsal	1442 (?)	3	3	1
115	Hardik Shah	1434 (?)	3	5	1
116	Joshua Müller	1433	13	21	1
117	Joshua Dreier	1429	6	8	0
118	Igor pradhan	1427 (?)	2	2	0
119	Martin Soldani	1423	9	12	0
120	Kevin Wu	1415	23	28	0
121	Yunes mouhib	1415 (?)	3	2	1
122	Neryvaldo Galvao	1404	14	18	1
123	Brunel Altabba	1398	6	8	1
124	Luka Vego	1397 (?)	3	4	0
125	Orion Kiser	1396 (?)	3	3	1
126	Mirco Paul	1395	7	9	0
127	Yann Spillmann	1385	14	26	2
128	Alexander Martinez Ciani	1385	10	12	2
129	Nahin Khan	1380	11	15	0
130	Max Hürlimann	1369 (?)	2	5	0
131	Mikel Escartin Lindner	1361 (?)	3	4	0
132	Paschoud Jérôme	1360	5	9	0
133	Christopher Narayanan	1350	6	10	0
134	Timo Rurack	1341 (?)	3	4	0
135	Alexandre Nozadze	1326	9	13	1
136	Ahmad Mahmood	1321	15	23	4
137	Gennaro Tetsu Guadagni	1314	5	9	0
138	Arthur Colombini Gusmao	1310 (?)	2	5	0
139	Rushil Chinnakaveti	1304 (?)	3	4	0
140	Giorgs Cechladze	1303	6	12	3
141	Juan Garcia Amboage	1294	5	10	1
142	Christoph Ribbe	1288 (?)	3	4	0
143	Matthias Ramsauer	1285 (?)	3	4	0
144	Shrey Mittal	1281 (?)	4	5	0
145	Doan Dai Nguyen	1251 (?)	2	6	0
146	Alessandro bifulco	1239 (?)	2	5	0
147	Noé Stammbach	1225	3	10	0
148	Nicola Kong	1222	9	24	1
149	Nicolas Bickel	1218 (?)	2	5	0
150	Osman Yasar	1213 (?)	2	5	0
151	Aurèle Huillet	1211	4	11	0
152	Florian Landis	1206 (?)	2	5	0
153	Jan Hirth	1199 (?)	2	3	0
154	Vijay Deshmukh	1187 (?)	2	7	1
155	Sebastian Pfaff	1171 (?)	2	4	0
156	Michele Dalle Rive	1168 (?)	1	5	0
157	Peter Karoly	1149 (?)	1	6	1
158	Dario Monopoli	1148	4	16	1
159	Denis Gadient	1143 (?)	1	3	0
160	Rainer Büchi	1139 (?)	1	6	0
161	Fred Damberger	1119 (?)	1	6	0
162	Joscha Rotzer	1110 (?)	0	4	1
163	Timosh Rueff	1107 (?)	1	3	0
164	Tom Claikens	1106 (?)	1	5	0
165	Michiel Swerts	1101 (?)	1	2	0
166	Magnus Angehrn	1060 (?)	2	5	0
167	Kilian	1014 (?)	0	2	0
168	Auguste Darracq Paries	1004 (?)	1	6	0
169	Marvin Winzap	992 (?)	1	5	0
170	Maximilian Kalcher	985 (?)	1	5	0
171	Alessio Rimoldi	961 (?)	0	5	0
172	Felix Boltes	951 (?)	0	3	1
173	Edwin Albrecht	947 (?)	0	3	1
174	Victor Böttchen	918 (?)	1	5	0
175	Julius Diem	804 (?)	0	7	0
176	Emanuel Frank	798 (?)	0	6	0
177	Muhammad Sharjeel	746 (?)	0	6	0
178	Nicolò Massari	704 (?)	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.