Koster, Ramon vs Duijker, Rick - Round 4: Koster, Ramon - Duijker, Rick - 2025.12.24

2026.10.31 vs Fates, Omer Salah 2026.10.30 vs Achour, Mohamed Anis 2026.10.29 vs Sala, Giulia 2026.10.28 vs Bouzidi, Ahmed 2026.10.28 vs Kakavand, Ramtin 2026.10.27 vs Naser Eldean,Ahmed 2026.10.26 vs Abdulrahman, Mohammed Midhat 2026.10.25 vs Ben Ammar, Mohamed 2026.10.24 vs Sambuev, Bator 2026.10.06 vs Pauly, Carlo 2026.10.03 vs Pauly, Carlo 2026.09.22 vs Dovgaliuk, Oleksandr 2026.08.29 vs Goncalves, Samuel Jesus P 2026.08.28 vs Gonzalez Pinar, Adrian 2026.08.27 vs Janzelj, Tim 2026.08.25 vs Garcia Sobrino, David 2026.08.24 vs Arvola, Daniel 2026.08.23 vs Haug, Havard 2026.08.22 vs Woods, Yannick 2026.08.22 vs Kamp, Aaron 2026.08.18 vs Gennari, Jacopo 2026.02.15 vs Cai, Chaoruo 2026.02.14 vs Bourg, Nicolas 2026.02.13 vs Minde, Baptiste 2026.02.12 vs Berend, Elvira 2026.02.11 vs Denninger, Guilhem 2026.02.11 vs Minde, Timothe 2026.02.11 vs Achour, Mohamed Anis 2026.02.11 vs Charfeddine,Khaled 2026.02.11 vs Durand-Benmoussa, Roman 2026.02.11 vs Minde, Baptiste 2026.02.11 vs Meftahi, Houssem Eddine 2026.02.11 vs Dejardin, Gregoire 2026.02.11 vs Echcharbiny, Wissal 2026.02.10 vs Achour, Mohamed Anis 2026.02.10 vs Zaibi, Amir 2026.02.09 vs Liu, Huaqi 2026.02.08 vs Bouzidi, Ahmed 2026.02.07 vs Moussard, Jules 2025.12.29 vs Edwardss, Dylan 2025.12.28 vs Shyaam Nikhil P 2025.12.28 vs Sanjay Narayanan P S 2025.12.26 vs Wempe, Joost 2025.12.24 vs Schuricht, Emil Frederick 2025.12.24 vs Duijker, Rick 2025.12.23 vs Elmi, Saad Abobaker 2025.12.22 vs De Boer, Eelke 2025.12.21 vs Khandhadia Nivaan Rathin 2025.12.03 vs Kudaibergen, Nurlykhan 2025.12.02 vs Magold, Filip 2025.12.01 vs Farberov, Maxim 2025.11.30 vs Han, Qixiang 2025.11.30 vs Mesropyan, Hayk 2025.11.29 vs Badrinath, S. 2025.11.28 vs Deepak Ambattu, Rithvik 2025.11.28 vs Carroll, Peter 2025.11.27 vs Yuffa, Daniil 2024.12.30 vs Mareau, Timothe 2024.12.29 vs Cernov, Henrik 2024.12.28 vs Albers, Sasa 2024.12.27 vs De Winter, Arthur 2024.12.26 vs Weber, Samuel 2024.12.24 vs Grooten, Herman 2024.12.23 vs Narayanan S L 2024.12.22 vs Hummel, Paul 2024.12.21 vs Grooten, Tommy 2024.09.14 vs Van Delft, Merijn 2024.09.14 vs Kazarjan, Gachatur 2024.09.14 vs Kerkmeester, Cedric 2024.09.14 vs Grooten, Tommy 2024.09.14 vs Grooten, Herman 2024.09.14 vs Ratsma, Midas 2024.09.14 vs Schilstra, Laurens 2024.09.14 vs Tikranian, Alik 2024.09.14 vs Grochal, Joey 2024.09.14 vs Admiraal, Miguoel 2024.09.14 vs Elgersma, Onno — vs Mammadova, Narmin — vs Rodriguez Ferreiros, Andres — vs Guleryuz, Kuzey — vs Gomez Carreno, Martin — vs Smirin, Ilia — vs Bailet, Pierre — vs Zhang, Xin An — vs Takahashi, Michael — vs Cabanas Lopez, Manuel Anxo
Duijker, Rick (2148)
Koster, Ramon (2307)
EventRound 4: Koster, Ramon - Duijker, Rick
Sitehttps://lichess.org/broadcast/chessfestival-groningen-2025--open-a/round-4/NDMkwvAA/FX9FEm8x
Date2025.12.24
Round4.17
WhiteKoster, Ramon
BlackDuijker, Rick
Result1/2-1/2
WhiteElo2307
WhiteTitleFM
WhiteFideId1008544
BlackElo2148
BlackTitleFM
BlackFideId1010565
VariantStandard
ECOD21
OpeningQueen's Gambit Accepted: Rosenthal Variation
UTCDate2025.12.24
UTCTime11:15:23
BroadcastNameChessfestival Groningen 2025 | Open A
BroadcastURLhttps://lichess.org/broadcast/chessfestival-groningen-2025--open-a/round-4/NDMkwvAA
GameURLhttps://lichess.org/broadcast/chessfestival-groningen-2025--open-a/round-4/NDMkwvAA/FX9FEm8x
Engine eval --
1/2-1/2
Koster, Ramon
1 blunder
0 mistakes
0 inaccuracies
94% accuracy
Duijker, Rick
1 blunder
0 mistakes
0 inaccuracies
96% accuracy