Koen Mathijssen
NED · FIDE ID 40109895 · 18 tournament games since 2025
Standard
1781
#3303 in NED (active)
Rapid
1764
#792 in NED (active)
Blitz
–
Unrated
Score
47%
8 W · 1 D · 9 L
Opp. avg
1910
Last 18 games
Last game
2026-08-05
Open Nederlandse Jeugdkampioenschappen 2026 | ABC
Prep summary
- As White: 1.e4 in 100% of games (scores 50%).
- Against 1.e4: 1...e5 in 7 of 7 games (King's Pawn Game), scoring 57%.
Based on 18 over-the-board games (11 classical · 7 rapid). 8 with White (50%), 10 with Black (45%).
Openings as White
First move
| 1.e4 | 8 | 50% |
Most played
| Opening | Games | Score |
|---|---|---|
| Sicilian Defense: Scheveningen Variation, English Attack, with f3 | 1 | 100% |
| French Defense: Exchange Variation, Monte Carlo Variation | 1 | 0% |
| Modern Defense | 1 | 0% |
| Caro-Kann Defense: Panov Attack | 1 | 100% |
| Italian Game: Classical Variation, Greco Gambit, Main Line | 1 | 100% |
Openings as Black
Against 1.e4 (7 games)
| 1...e5 King's Pawn Game | 7 | 57% |
Against 1.d4 (2 games)
| 1...Nf6 Indian Defense | 2 | 25% |
Most played
| Opening | Games | Score |
|---|---|---|
| King's Gambit Accepted: Bonsch-Osmolovsky Variation | 1 | 0% |
| Scotch Game: Classical Variation | 1 | 100% |
| Ruy Lopez: Marshall Attack | 1 | 0% |
| Scotch Game: Scotch Gambit, Kingside Variation | 1 | 0% |
| English Opening: Anglo-Indian Defense | 1 | 0% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-08-05 | Carlijn Hagen (1860) Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | L |
| 2026-08-04 | Sven Bruls Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | W |
| 2026-08-04 | Kevin Wan Ze Gang Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | W |
| 2026-08-03 | Mathijs Vogels (1854) Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | L |
| 2026-08-01 | Rishiadithya Murali (1932) Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | L |
| 2026-08-01 | Sven Winter (2071) Open Nederlandse Jeugdkampioenschappen 2026 | ABC · classical | L |
| 2026-05-03 | Sam Klein Tuente Open NK Rapid 2026 Jeugd · rapid | L |
| 2026-05-03 | Advay Patil Open NK Rapid 2026 Jeugd · rapid | W |
| 2026-05-03 | Roel Hompes Open NK Rapid 2026 Jeugd · rapid | W |
| 2026-05-03 | Casijn Jong Open NK Rapid 2026 Jeugd · rapid | 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.