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	Noah Fecker	2340	14	1	1
2	Nidal Hevi Oğur	2293 (?)	7	0	0
3	Olivier Tschopp	2255	24	2	4
4	Vincent Lou	2205	34	9	1
5	Kirill Zaitsev	2198	32	7	6
6	Amirali Delavari	2119 (?)	6	1	0
7	owen guo	2071 (?)	6	0	1
8	Aleksandrs Saveljevs	2037 (?)	5	1	1
9	Márk Süket	2023 (?)	4	1	2
10	Nicolás Piro	2017 (?)	4	1	2
11	Milko Bakalov	2015	13	5	3
12	Guo bo kai owen	1984 (?)	5	1	1
13	Sinan Deveci	1976	29	11	1
14	Davide Guidobene	1967	8	3	1
15	Yun Pan	1950	68	28	6
16	Max Newsome	1932	38	17	3
17	Yven Kius	1898	28	12	3
18	Claudio Boegli	1878 (?)	3	2	2
19	Alex Meili	1878 (?)	3	2	2
20	Calvin Chiu	1877	9	2	3
21	Philip Olson	1874	22	10	3
22	Lorenzo Vettor	1872	41	18	4
23	Florian Stäuble	1863	9	5	0
24	Jair Gutierrez Reyes	1852 (?)	4	3	0
25	Batuhan Iliev	1849 (?)	4	2	1
26	Hongwei Zheng	1811	14	8	1
27	Writabrata Roy	1793 (?)	5	2	0
28	Dimitri Skikos	1781 (?)	5	2	0
29	Maywand Akhtari	1775 (?)	5	2	0
30	Ved Bhatawadekar	1773	8	6	0
31	Ramona Golsta	1764	7	5	2
32	Dorian Quelle	1741	36	24	3
33	Johannes Reiner	1736 (?)	4	1	2
34	Hongwei Zheng Shi	1734	9	5	0
35	Federico Guglielmotti	1705	32	21	5
36	Lawrence Scafuri	1704	20	14	10
37	Peter Mukovskiy	1703 (?)	5	2	0
38	Máté Süket	1671	8	5	1
39	Pavlos Stoll	1668 (?)	3	2	2
40	Julien Delattre	1644	8	8	4
41	Giulio Abreu	1635 (?)	4	3	0
42	Jesus Jair Reyes Gutierrez	1632	15	13	0
43	Vid Bhatawabekar	1629 (?)	3	3	0
44	Luis Felipe Cattelan	1619 (?)	4	3	0
45	Ana Marija Vego	1609	37	33	4
46	Krithik Chockalingam	1591	8	6	0
47	Julian Modanese	1584 (?)	4	3	0
48	Benedikt Gebhard	1575 (?)	3	4	0
49	Frehner Thomas	1572	14	16	0
50	Igor pradhan	1571 (?)	6	5	0
51	Lubin Lee	1560 (?)	2	2	3
52	Simon von Siebenthal	1556	7	7	0
53	Onno Riedel	1550	19	20	1
54	Gabrielmario Tavini	1543 (?)	3	4	0
55	Mehmet Arslan	1534 (?)	4	3	0
56	Denis Hallulli	1533 (?)	4	4	0
57	Uri Kreitner	1530 (?)	2	3	0
58	Mert Yaroglu	1525 (?)	2	3	2
59	Luwai Appels	1516	6	6	2
60	Raghu Raman Ravi	1515	8	8	0
61	Silas Tapernoux	1507 (?)	3	3	1
62	Tom Crossley	1500	7	7	0
63	Marcell Gabor Meszaros	1500	6	7	1
64	Jorin Strahl	1497	8	11	2
65	Zoran Dragnic	1491	17	22	3
66	Fabian Schmid	1491 (?)	3	4	0
67	Neryvaldo Galvao	1484	26	35	2
68	Chris Hartl	1482	8	12	1
69	Sander de Haan	1476 (?)	2	3	2
70	Santiago Llobell Bartret	1468 (?)	3	3	1
71	Matteo Carrozza	1466	6	7	1
72	Giovanni Ottoboni	1451	14	21	1
73	Boris Ivanov	1444 (?)	3	4	0
74	Alex	1440 (?)	3	3	0
75	Béla Imre Kammermann	1432	7	7	0
76	Luis felipe prates cattelan	1421	10	9	2
77	Bryan Antony	1419 (?)	3	4	0
78	Ashutosh Chennamangalam	1412 (?)	3	3	1
79	Pablo Petersen	1399	5	7	1
80	Viktor Heitmann	1397 (?)	3	4	0
81	Brian Lin	1395	7	7	0
82	Vlad Ciuleanu	1385	7	8	0
83	Christoph Ribbe	1381	5	6	3
84	Nahin Kahn	1376 (?)	3	3	0
85	Felix Kloer	1366 (?)	3	4	0
86	Isabel Andrea Almasan	1361 (?)	3	4	0
87	Benedikt Leonard Stefan Gebhard	1359 (?)	3	4	0
88	Andreas Buchheit	1354 (?)	3	3	1
89	Laurent Zheng	1353	5	8	0
90	Younes Mouhib	1352	7	14	0
91	Ilia Moghayer	1348 (?)	2	4	1
92	Benedikt Hemp	1338 (?)	3	4	0
93	Ferenc Süket	1330 (?)	3	4	0
94	Ricard Pozo Guti	1322 (?)	2	5	0
95	Leopold Reigl	1320	7	13	2
96	David Wermuth	1320 (?)	2	5	0
97	Konstantinos Kiori	1312 (?)	3	4	0
98	Martin Soldani	1303	12	22	1
99	Adela Ioana Popon	1299	6	8	0
100	Ilie-Daniel Apostol	1299	5	8	0
101	Rhea Fischer	1298 (?)	3	4	0
102	Alessandro Müller	1297 (?)	2	4	1
103	Samuel Jenny	1276 (?)	3	4	0
104	Jonas Tibisch	1274 (?)	3	4	0
105	Julius Wendland	1266 (?)	2	5	0
106	Daniele Bellezza	1259 (?)	2	5	0
107	Georgios Vlachakis	1253 (?)	2	5	0
108	Ziya teleti	1252	7	13	0
109	Aurele Delvart	1236 (?)	3	4	0
110	Eduarda Assuncao	1228	3	10	0
111	Anton Hensel	1219 (?)	2	5	0
112	Manthan Gadhia	1205 (?)	3	4	0
113	Philippe Walcher	1180 (?)	1	5	1
114	Fabian Egger	1168 (?)	1	5	1
115	Ruslan Pichuk	1161 (?)	2	4	0
116	Alex Savca	1160 (?)	2	5	0
117	Giorgos Zachariou	1148 (?)	2	5	0
118	Robin Rudin	1146 (?)	2	4	1
119	Ralph Romero Müller	1062 (?)	2	5	0
120	Merlin Weiss	1059 (?)	2	5	0
121	Lukas Kaldune	1059	4	9	1
122	Nereida Rupp Aspioti	996 (?)	1	5	1
123	Anthony Schwarz	994 (?)	2	5	0
124	Anna von Loesch	974 (?)	2	5	0
125	Joshua Gao	941 (?)	2	5	0
126	Lenny Schürch	900 (?)	0	5	0
127	Tudor-Stefan Magirescu	885 (?)	0	6	0
128	Finn-Moritz Heller	853 (?)	0	6	0
129	Emanuel Frank	832	2	11	0
130	Sarah Morach	821 (?)	0	6	0
131	Akif Yildiz	821 (?)	1	6	0
132	benjamin dropmann	596 (?)	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.