William Mustajarvi
SWE · FIDE ID 1789589 · 8 tournament games since 2025
Standard
–
Unrated
Rapid
1678
#1819 in SWE (active)
Blitz
–
Unrated
Score
63%
5 W · 0 D · 3 L
Opp. avg
1655
Last 8 games
Last game
2025-07-31
Jönköping Chess Festival | Rapid Open
Prep summary
- As White: 1.e4 in 100% of games (scores 67%).
- Against 1.d4: 1...Nf6 in 4 of 4 games (Indian Defense), scoring 50%.
Based on 8 over-the-board games (7 classical · 1 rapid). 3 with White (67%), 5 with Black (60%).
Openings as White
First move
| 1.e4 | 3 | 67% |
Most played
| Opening | Games | Score |
|---|---|---|
| Sicilian Defense: Closed | 1 | 100% |
| Bishop's Opening: Ponziani Gambit | 1 | 100% |
| Pirc Defense | 1 | 0% |
Openings as Black
Against 1.e4 (1 game)
| 1...c5 Sicilian Defense | 1 | 100% |
Against 1.d4 (4 games)
| 1...Nf6 Indian Defense | 4 | 50% |
Most played
| Opening | Games | Score |
|---|---|---|
| Indian Defense: Spielmann-Indian | 2 | 50% |
| Indian Defense: Accelerated London System | 1 | 0% |
| Sicilian Defense: Lasker-Pelikan Variation, Retreat Variation | 1 | 100% |
| Indian Defense | 1 | 100% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2025-07-31 | Martin Krantz (1960) Jönköping Chess Festival | Rapid Open · rapid | L |
| 2025-07-28 | Alexander Batshoun Jönköping Chess Festival | Standard - U1700 · classical | W |
| 2025-07-27 | Nithika Kesavan Jönköping Chess Festival | Standard - U1700 · classical | W |
| 2025-07-27 | Aliya Fahed Alharazi (1464) Jönköping Chess Festival | Standard - U1700 · classical | W |
| 2025-07-27 | Edward Whitlock Jönköping Chess Festival | Standard - U1700 · classical | W |
| 2025-07-26 | Soufia Alzyod Jönköping Chess Festival | Standard - U1700 · classical | W |
| 2025-07-26 | Malika Uteuliyeva Jönköping Chess Festival | Standard - U1700 · classical | L |
| 2025-07-26 | Fahad Abdulaziz Al-Ali (1542) Jönköping Chess Festival | Standard - U1700 · classical | L |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.