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	2416	46	4	5
2	Noah Fecker	2398	14	1	1
3	Joly Julien	2329	13	2	1
4	Olivier Tschopp	2320	19	2	2
5	Vincent Lou	2254	34	9	1
6	Anton Hul	2238	50	10	6
7	Kirill Zaitsev	2237	32	7	6
8	Milko Bakalov	2051	13	5	3
9	Sinan Deveci	2050	25	9	0
10	Michael Bühler	2050 (?)	6	3	0
11	Nicolás Piro	2049 (?)	4	1	2
12	Subramanian Ramasubramanian	2045	16	4	1
13	Tamerlan Begdullayev	2045 (?)	5	2	2
14	Yun Pan	1992	64	25	6
15	Davide Guidobene	1992	8	3	1
16	Marco Pastore	1988 (?)	3	1	3
17	Jonas Menzi	1987 (?)	5	2	2
18	Gleb Krivovyaz	1978 (?)	5	4	0
19	Luca Valsecchi	1972 (?)	4	1	2
20	Max Newsome	1963	33	15	3
21	Ruslan Shumilov	1961	10	4	1
22	Hongwei Zheng Shi	1946 (?)	5	2	0
23	Yven Kius	1923	18	8	3
24	Philip Christoph	1921 (?)	5	4	0
25	Batuhan Iliev	1917 (?)	4	2	1
26	Calvin Chiu	1901 (?)	5	1	1
27	Evan Quistad	1896 (?)	5	4	0
28	Fabian Fong Schmid	1880	9	4	1
29	Chaojie Li	1861	12	8	4
30	Lorenzo Vettor	1860	31	14	4
31	Jasper Dekoninck	1850	15	7	4
32	Amirreza Nikoo	1847 (?)	5	2	0
33	Menderes Eroglu	1846	22	11	3
34	Florian Stäuble	1821 (?)	4	3	0
35	Philip Olson	1815	16	10	2
36	Ved Bhatawadekar	1815 (?)	4	3	0
37	Writabrata Roy	1809 (?)	5	2	0
38	Dorian Quelle	1805	33	20	3
39	Menderes eroğlu	1803 (?)	7	4	0
40	Marcus Imris	1790	40	24	4
41	Gary Hoppeler	1784	23	13	2
42	Nils Koltzenburg	1781	8	7	1
43	Tom Crossley	1765 (?)	4	3	0
44	Max Baharev	1740	8	7	1
45	Ákos Imolay	1735 (?)	5	2	0
46	Tim Vaughan-Whitehead	1714	20	15	1
47	Giulio Abreu	1694 (?)	4	3	0
48	Mark Shen	1686	14	14	2
49	Federico Guglielmotti	1678	21	15	1
50	Béla Imre Kammermann	1675 (?)	4	3	0
51	Anton De Ruig	1666	14	11	2
52	Miguel Orbegozo Rodriguez	1666	9	7	0
53	Jesus Jair Reyes Gutierrez	1659	8	6	0
54	Fabio Rentsch	1656 (?)	6	5	0
55	David Olival Ferreira	1654	16	10	1
56	Joly Fabrice	1645 (?)	4	5	0
57	Krithik Chockalingam	1638	8	6	0
58	Lawrence Scafuri	1636	9	9	5
59	Michael Schröder	1633 (?)	3	3	1
60	Alexandre Terrail	1629	19	17	3
61	Frehner Thomas	1627	11	12	0
62	Geray Memetov	1624 (?)	4	2	0
63	Ana Marija Vego	1621	33	30	4
64	Mehmet Arslan	1588 (?)	4	3	0
65	Uri Kreitner	1581 (?)	2	3	0
66	Alexander Gibbert	1567 (?)	5	4	0
67	Asaf Amitai	1564	11	12	2
68	Sander de Haan	1562 (?)	2	3	2
69	Giulio Tamburi	1560 (?)	3	4	2
70	Onno Riedel	1555	15	17	1
71	David Oort ALonso	1546	7	7	0
72	Noah Meyer	1545	10	10	0
73	Silas Tapernoux	1544 (?)	3	3	1
74	Emilio Grandinetti	1542	19	23	1
75	Joshua Mueller	1533	6	7	1
76	Oliver Eggenberger	1533 (?)	3	4	0
77	Oliver Rutkowski	1532	12	13	0
78	Stefano Rossi	1521	5	7	2
79	Zoran Dragnic	1510	17	22	3
80	Peter Feller	1509	7	7	2
81	Chris Hartl	1507	8	12	1
82	Néstor Cordero Sanchez	1502 (?)	3	3	1
83	Neryvaldo Galvao	1488	23	31	2
84	Giovanni Ottoboni	1480	11	17	1
85	Popovici Liviu Daniel	1476 (?)	4	5	0
86	Malik Ibrahim Awad	1469	4	7	3
87	Roy Liu	1461 (?)	3	6	0
88	Tetsu Guadagni	1460 (?)	3	4	0
89	Luis felipe prates cattelan	1453	8	6	0
90	Benedict Himp	1450 (?)	2	5	0
91	Fernando Giraudo	1448 (?)	3	4	0
92	Isabel Andrea Almasan	1447 (?)	3	4	0
93	Pablo Petersen	1446 (?)	2	4	1
94	Martin Soldani	1435	9	12	0
95	Vlad Ciuleanu	1424	7	8	0
96	Igor pradhan	1421 (?)	2	2	0
97	Yunes mouhib	1412 (?)	3	2	1
98	Mirco Paul	1408	8	14	0
99	Orion Kiser	1400 (?)	3	3	1
100	Ziya teleti	1398 (?)	3	4	0
101	Ricard Pozo Guti	1391 (?)	2	5	0
102	Raffaele Lanini	1390	5	9	2
103	Konstantinos Kiori	1383 (?)	3	4	0
104	Ilia Moghayer	1378 (?)	2	4	1
105	Yann Spillmann	1377	16	31	3
106	Nahin Kahn	1375 (?)	3	3	0
107	Nahin Khan	1371	11	15	0
108	Younes Mouhib	1371	7	14	0
109	Mikel Escartin Lindner	1371 (?)	3	4	0
110	Florian Landis	1366	4	9	0
111	Andreas Buchheit	1365 (?)	3	3	1
112	Huaiqian Liu	1353 (?)	2	6	1
113	Timo Rurack	1352 (?)	3	4	0
114	Lorenzo Benedetti	1350	4	8	1
115	Leopold Reigl	1335	7	13	2
116	Julien Delattre	1332 (?)	1	4	1
117	Ahmad Mahmood	1329	15	23	4
118	Gabriela Maciak	1329 (?)	3	6	0
119	Arthur Colombini Gusmao	1306 (?)	2	5	0
120	Rushil Chinnakaveti	1300 (?)	3	4	0
121	Christoph Ribbe	1289 (?)	3	4	0
122	Karina Begdullayeva	1286 (?)	2	6	0
123	Diana Begdullayeva	1285 (?)	2	7	0
124	Matthias Ramsauer	1283 (?)	3	4	0
125	Noé Stammbach	1244	4	14	1
126	Alessandro bifulco	1237 (?)	2	5	0
127	Laura Alilovic	1236	7	17	0
128	Manthan Gadhia	1236 (?)	3	4	0
129	Alex Savca	1222 (?)	2	5	0
130	Fabian Egger	1222 (?)	1	5	1
131	Nicolas Bickel	1208 (?)	2	5	0
132	Aurèle Huillet	1206	4	11	0
133	Philippe Walcher	1206 (?)	1	5	1
134	Michiel Swerts	1172 (?)	1	2	0
135	Robin Rudin	1163 (?)	2	4	1
136	Tom Claikens	1093 (?)	1	5	0
137	Merlin Weiss	1075 (?)	2	5	0
138	Magnus Angehrn	1057 (?)	2	5	0
139	Lukas Kaldune	1022 (?)	1	5	1
140	Marvin Winzap	999 (?)	1	5	0
141	Maximilian Kalcher	977 (?)	1	5	0
142	Lenny Schürch	914 (?)	0	5	0
143	Emanuel Frank	848	2	11	0
144	Julius Diem	841 (?)	0	7	0
145	Muhammad Sharjeel	743 (?)	0	6	0
146	benjamin dropmann	604 (?)	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.