Format
KV
Koski, Viljo
🇸🇪FIDE 1717553· Male· Sweden· Born in 1949
Follow Viljo KoskiTrack his monthly FIDE ratings, games, tournaments and more.
Viljo Koski, a 77-year-old Swedish player, is rated 1880. He has held steady between 1850 and 1900 for 6 months. 15 rated games in the past year (≈19/year long-term). Recent standard appearances include VSF Distriksserie finalspel 2026, Allsvenskan 2025-2026: I:3 r7, and Allsvenskan 2025-2026: I:3 r5-6 feb. Also played 4 rapid (including Vastgota Open 2025 r1-4) and 1 blitz events (including Lusseblixten 2025) recently. His peak of 1931 was reached at age 66 (Aug 2015).
Current rating
1880
Standard
Rpd1853·Blz1863
All-time high
1931
−51 pts below
Aug 2015 · age 66
Aug 2015 · age 66
Activity
20
games / yr avg. · ≈2/mo
15 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#53,210
#53,210 · players worldwide · of 218,279
Career timeline
12 entries2025
25th Swedish 75-80 player
at age 76 · rated 1903
Dec 2025
Best 12-month gain (+89 Elo)
1824 → 1913
Feb 2025
2022
40th Swedish 70-75 player
at age 73 · rated 1874
Apr 2022
2020
Inactive for 12 months
paused at 1871 → returned at 1885
Jul 2020
2018
100 career games
at age 69
Feb 2018
2015
38th Swedish 65-70 player
at age 66 · rated 1931
Aug 2015
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.
Activity & highlights
Evolution
+5
1875 → 1880
Tournaments
11
16 games
Score
8.5/ 1653.1%
6W5D5L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
11 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Team | Mar 2026 | 0/1 | #15 | 1158 | -8.2 |
Team | Mar 2026 | 0/1 | #61 | 1425 | -2.6 |
Team | Feb 2026 | 0/1 | #52 | 1318 | -4.6 |
Team | Jan 2026 | 1.5/2 | #14 | 1981 | +5.2 |
Team | Jan 2026 | 0/1 | #39 | 1275 | -6.0 |
Team | Dec 2025 | 0/1 | #48 | 1223 | -6.0 |
Team | Nov 2025 | 0.5/1 | #30 | 1820 | -2.4 |
Team | Nov 2025 | 1.5/2 | #16 | 2002 | +4.6 |
Open Swiss | Oct 2025 | 2/3 | #12 | 1952 | +6.6 |
Team | Oct 2025 | 1/1 | #18 | 2752 | +12.4 |
Most-Played Opponents
vsRickard Dahlstrom
🇸🇪SWE·1977
+1 −16 =0
17 games·last met Mar 2026
View head-to-head →
vsFredrik Kjellqvist
🇸🇪SWE·1886
+4 −2 =5
11 games·last met Mar 2026
View head-to-head →
vsKenneth Wiman
🇸🇪SWE·1871
+7 −2 =2
11 games·last met Dec 2023
View head-to-head →
vsPer 1967 Johansson
🇸🇪SWE·1858
+2 −6 =2
10 games·last met Oct 2025
View head-to-head →
vsSmail Beslagic
🇸🇪SWE·1867
+3 −1 =6
10 games·last met Oct 2025
View head-to-head →
Rankings
/
Sweden
#1,048
out of 3,410 players
Europe
#39,102
in continent
World
#53,209
out of 400,000+
National ranking
Europe & World
Europe
World
Sweden
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| ... | ||
| 1048 | 1,880 | |
Europe
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| ... | ||
| 39102 | 1,880 | |
World
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| ... | ||
| 53209 | 1,880 | |