Oystein Boyum Fossum

Country

NOR

Birth Year

1987

Gender

M

Title

FIDE Master

FIDE ID

1503430

FIDE ratings

2310

Classical

Published FIDE

2199

Rapid

Published FIDE

2239

Blitz

Published FIDE

Official classical ranks

World rank
#3753
National rank · NOR
#49

Active players · Oct 2026 FIDE list ⓘ

Rating history

Highest recorded rating
2329 Apr 2025
Recorded years
2002–2026
Archived games
74

Based on available monthly lists and saved games.

FIDE rating history

Published rating lists through Oct 2026.

View rating lists
Available Games

Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-07 (UTC).

# Date Event Site Round White Black Result Moves View
1 2026-06-07 Norway Chess Open June Oslo NOR 7.7 Svendsen,Per Fossum,Oy 0-1 37 Open
2 2026-06-06 Norway Chess Open June Oslo NOR 6.3 Fossum,Oy Wang,Hao(ZJ) 1/2-1/2 64 Open
3 2026-06-05 Norway Chess Open June Oslo NOR 5.4 Marsh,James J Fossum,Oy 1/2-1/2 53 Open
4 2026-06-04 Norway Chess Open June Oslo NOR 4.17 Fossum,Oy Valvag,Torbjorn 1/2-1/2 32 Open
5 2026-06-03 Norway Chess Open June Oslo NOR 3.7 Bjerke,R Fossum,Oy 0-1 30 Open
6 2026-06-02 Norway Chess Open June Oslo NOR 2.4 Fossum,Oy Bernhoftsen-Banks,Alec 1/2-1/2 27 Open
7 2026-06-01 Norway Chess Open June Oslo NOR 1.4 Moklebust-Lien,Eskil Fossum,Oy 0-1 42 Open
8 2026-03-07 TCh-NOR Elite 2025-26 Norway NOR 8.14 Fossum,Oy Hammerstad,A 1-0 30 Open
9 2026-03-06 TCh-NOR Elite 2025-26 Norway NOR 7.53 Gausel,E Fossum,Oy 1/2-1/2 47 Open
10 2026-02-07 TCh-NOR Elite 2025-26 Norway NOR 5.43 Mads Vestby-Ellingsen Oystein Boyum Fossum 1-0 81 Open
11 2025-11-01 TCh-NOR Elite 2025-26 Norway NOR 2.44 Yngve Fossheim Oystein Boyum Fossum 1-0 50 Open
12 2025-03-09 TCh-NOR Elite 2024-25 Norway NOR 9.44 Lars Oskar Hauge Oystein Boyum Fossum 1/2-1/2 70 Open
13 2025-03-08 TCh-NOR Elite 2024-25 Norway NOR 8.54 Oystein Boyum Fossum Lucas Ranaldi 1/2-1/2 135 Open
14 2025-02-09 TCh-NOR Elite 2024-25 Norway NOR 6.24 Nicolas Axel Mellem Oystein Boyum Fossum 0-1 44 Open
15 2024-10-26 TCh-NOR Elite 2024-25 Norway NOR 2.14 Oystein Boyum Fossum Eivind Grunt Kreken 1-0 37 Open
16 2024-03-09 TCh-NOR Elite 2023-24 Oslo NOR 8.55 Oystein Boyum Fossum Tor Fredrik Kaasen 1/2-1/2 44 Open
17 2024-03-08 TCh-NOR Elite 2023-24 Oslo NOR 7.15 Oystein Boyum Fossum Jens E Ingebretsen 0-1 34 Open
18 2023-10-29 TCh-NOR Elite 2023-24 Oslo NOR 3.35 Oystein Boyum Fossum Jens Hjorth Kjolberg 1-0 39 Open
19 2023-10-28 TCh-NOR Elite 2023-24 Oslo NOR 2.35 Pal Royset Oystein Boyum Fossum 1/2-1/2 42 Open
20 2023-03-05 TCh-NOR Elite 2022-23 Norway NOR 9.26 Johannes Haug Oystein Boyum Fossum 1/2-1/2 56 Open
21 2023-01-15 TCh-NOR Elite 2022-23 Norway NOR 6.36 Oystein Boyum Fossum Andreas Tenold 1-0 29 Open
22 2023-01-14 TCh-NOR Elite 2022-23 Norway NOR 5.46 Afras Mansoor Oystein Boyum Fossum 0-1 37 Open
23 2021-10-29 TCh-NOR Elite 2021-22 Norway NOR 1.4 Oystein Boyum Fossum Aleksander Lindbol 1/2-1/2 24 Open
24 2021-10-17 Fagernes GM Open 2021 Fagernes NOR 9.14 Oystein Boyum Fossum Andreas Skotheim 1/2-1/2 53 Open
25 2021-10-16 Fagernes GM Open 2021 Fagernes NOR 8.18 Ieysaa Bin-Suhayl Oystein Boyum Fossum 0-1 36 Open
26 2021-10-15 Fagernes GM Open 2021 Fagernes NOR 7.22 Oystein Boyum Fossum Pijus Greicius 1-0 52 Open
27 2021-10-14 Fagernes GM Open 2021 Fagernes NOR 6.19 Ward Al-Tarboush Oystein Boyum Fossum 1-0 53 Open
28 2021-10-13 Fagernes GM Open 2021 Fagernes NOR 5.1 Oystein Boyum Fossum Tor Fredrik Kaasen 0-1 40 Open
29 2021-10-12 Fagernes GM Open 2021 Fagernes NOR 4.9 Frode Elsness Oystein Boyum Fossum 1/2-1/2 42 Open
30 2021-10-12 Fagernes GM Open 2021 Fagernes NOR 3.18 Oystein Boyum Fossum Christian Grundekjon 1-0 38 Open
31 2021-10-11 Fagernes GM Open 2021 Fagernes NOR 2.7 Titas Stremavicius Oystein Boyum Fossum 1-0 103 Open
32 2021-10-10 Fagernes GM Open 2021 Fagernes NOR 1.26 Oystein Boyum Fossum Valentina Verbin 1-0 38 Open
33 2020-01-19 TCh-NOR Elite 2019-20 Norway NOR 6.4 Oystein Boyum Fossum Aksel Brasoy 1-0 66 Open
34 2020-01-18 TCh-NOR Elite 2019-20 Norway NOR 5.1 Oystein Boyum Fossum Lars Even Andersen 1-0 64 Open
35 2020-01-17 TCh-NOR Elite 2019-20 Norway NOR 4.5 Bruce Diesen Oystein Boyum Fossum 1/2-1/2 38 Open
36 2019-12-06 TCh-NOR Elite 2019-20 Norway NOR 1.5 Edit Machlik Oystein Boyum Fossum 0-1 45 Open
37 2019-06-02 TCh-NOR Club 2019 Drammen NOR 6.4 Oystein Boyum Fossum Brede Andre Larsen Hagen 1-0 64 Open
38 2019-06-02 TCh-NOR Club 2019 Drammen NOR 5.3 Sebastian Mihajlov Oystein Boyum Fossum 1-0 37 Open
39 2019-06-01 TCh-NOR Club 2019 Drammen NOR 4.2 Oystein Boyum Fossum Eivind Olav Risting 1/2-1/2 25 Open
40 2019-06-01 TCh-NOR Club 2019 Drammen NOR 3.5 Sondre Melaa Oystein Boyum Fossum 0-1 100 Open
41 2019-05-31 TCh-NOR Club 2019 Drammen NOR 2.8 Oystein Johnsen Oystein Boyum Fossum 0-1 39 Open
42 2019-02-24 Kragero Resort Chess 2019 Kragero NOR 9.1 Oystein Boyum Fossum Mamikon Gharibyan 0-1 51 Open
43 2019-02-24 Kragero Resort Chess 2019 Kragero NOR 8.11 Nicolai Getz Oystein Boyum Fossum 0-1 35 Open
44 2019-02-23 Kragero Resort Chess 2019 Kragero NOR 7.17 Aleksander Flasen Oystein Boyum Fossum 0-1 35 Open
45 2019-02-23 Kragero Resort Chess 2019 Kragero NOR 6.14 Oystein Boyum Fossum David Miedema 0-1 40 Open
46 2019-02-22 Kragero Resort Chess 2019 Kragero NOR 5.21 Sigve Holleland Oystein Boyum Fossum 0-1 41 Open
47 2019-02-22 Kragero Resort Chess 2019 Kragero NOR 4.7 Oystein Boyum Fossum Ramil Hasangatin 0-1 24 Open
48 2019-02-21 Kragero Resort Chess 2019 Kragero NOR 3.24 Sergey Eliseev Oystein Boyum Fossum 0-1 43 Open
49 2019-02-21 Kragero Resort Chess 2019 Kragero NOR 2.19 Oystein Boyum Fossum Yuliia Osmak 1/2-1/2 60 Open
50 2019-02-20 Kragero Resort Chess 2019 Kragero NOR 1.3 Elias Hulleberg Sidali Oystein Boyum Fossum 1/2-1/2 29 Open

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