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| Date | Players & Opening | Result | ECO | View |
|---|---|---|---|---|
| 2024.10.20 | Ondersteijn, Niels (2352) vs (2106) Quinn, Rory 39th European Chess Club Cup English Sicilian |
1-0 | A20 | |
| 2023.12.16 | Ondersteijn, Niels (2363) vs (2317) Grutter, Tim Meesterklasse 2023 - 2024 Irregular Indian |
1/2-1/2 | E10 | |
| 2023.11.25 | Praet, Maarten (2200) vs (2363) Ondersteijn, Niels Meesterklasse 2023 - 2024 |
0-1 | ||
| 2023.11.04 | Ondersteijn, Niels (2363) vs (2347) Wantola, Ivo Meesterklasse 2023 - 2024 |
0-1 | ||
| 2023.10.07 | Ondersteijn, Niels (2363) vs (2401) Van Der Werf, Mark Meesterklasse 2023 - 2024 |
0-1 | ||
| 2023.09.16 | Konijn, Rob (2110) vs (2363) Ondersteijn, Niels Meesterklasse 2023 - 2024 Pirc Austrian - Kurajica |
1-0 | B09 | |
| 2022.10.08 | Prohaszka, Peter (2570) vs (2382) Ondersteijn, Niels 37th European Chess Club Cup 2022 Modern |
1-0 | A41 | |
| 2022.10.06 | Ondersteijn, Niels (2382) vs (2573) Postny, Evgeny 37th European Chess Club Cup 2022 Queen's Indian Fianchetto |
0-1 | E15 | |
| 2022.10.04 | Maze, Sebastien (2530) vs (2382) Ondersteijn, Niels 37th European Chess Club Cup 2022 Pirc |
1-0 | B07 | |
| 2015.10.24 | Ondersteijn, Niels (2415) vs (2493) Dambacher, Martijn European Club Cup 2015 - Open Dutch - Raphael |
0-1 | A80 | |
| 2015.10.23 | Ondersteijn, Niels (2415) vs (2329) Maki-Uuro, Miikka European Club Cup 2015 - Open Slav Rubinstein |
0-1 | D11 | |
| 2015.10.22 | Diermair, Andreas (2446) vs (2415) Ondersteijn, Niels European Club Cup 2015 - Open Gruenfeld - Exchange |
1-0 | D90 | |
| 2015.10.21 | Jensen, Bjarke (2366) vs (2415) Ondersteijn, Niels European Club Cup 2015 - Open Philidor - Exchange |
0-1 | C41 | |
| 2015.10.20 | Ondersteijn, Niels (2415) vs (2617) Markus, Robert European Club Cup 2015 - Open King's Indian Schwarz (Makogonov) |
0-1 | E71 | |
| 2015.10.19 | Ondersteijn, Niels (2415) vs (2326) O`donnell, Conor European Club Cup 2015 - Open Nimzo-Indian St. Petersburg Rubinstein - Reshevsky |
1/2-1/2 | E46 | |
| 2015.10.18 | Harikrishna, P. (2737) vs (2415) Ondersteijn, Niels European Club Cup 2015 - Open Philidor - Exchange |
1-0 | C41 | |
| 2007.10.09 | Ondersteijn, Niels (2272) vs (2203) Diesen, Bruce 23rd European Club Cup 2007 Spanish Morphy - Wormald |
1-0 | C77 | |
| 2007.10.08 | Kovachev, Daniel Jakobsen (2190) vs (2272) Ondersteijn, Niels 23rd European Club Cup 2007 Sicilian Maroczy - Gurgenidze |
0-1 | B36 | |
| 2007.10.07 | Zaja, Ivan (2467) vs (2272) Ondersteijn, Niels 23rd European Club Cup 2007 Gruenfeld Exchange |
1/2-1/2 | D85 | |
| 2007.10.06 | Ondersteijn, Niels (2272) vs (2014) Corbin, Paul 23rd European Club Cup 2007 Sicilian Closed - Zukertort |
1-0 | B23 | |
| 2007.10.04 | Ondersteijn, Niels (2272) vs (2278) Van Der Elburg, Freddie 23rd European Club Cup 2007 Sicilian |
0-1 | B40 | |
| 2007.10.03 | Ondersteijn, Niels (2272) vs (2509) Kantsler, Boris 23rd European Club Cup 2007 Sicilian |
0-1 | B40 | |
| 2006.10.14 | Ondersteijn, Niels (2288) vs (2234) Kett, Tim 22nd European Club Cup 2006 Spanish Morphy - Wormald |
1-0 | C77 | |
| 2006.10.13 | Kalod, Radek (2484) vs (2288) Ondersteijn, Niels 22nd European Club Cup 2006 Sicilian - Hungarian |
1-0 | B27 | |
| 2006.10.12 | Ondersteijn, Niels (2288) vs (2477) Hoffmann, Michael 22nd European Club Cup 2006 Sicilian Closed |
1/2-1/2 | B23 | |
| 2006.10.11 | Ondersteijn, Niels (2288) vs (2318) Murtez, Hondozi 22nd European Club Cup 2006 Sicilian Closed |
0-1 | B23 | |
| 2006.10.10 | Thorfinnsson, Bjorn (2317) vs (2288) Ondersteijn, Niels 22nd European Club Cup 2006 Irregular Queen's Pawn - Kotov |
1-0 | A40 | |
| 2006.10.09 | Olafsson, Thorvardur (2151) vs (2288) Ondersteijn, Niels 22nd European Club Cup 2006 Sicilian - Hungarian |
1-0 | B27 | |
| 2006.10.08 | Ondersteijn, Niels (2288) vs (2564) Kogan, Artur 22nd European Club Cup 2006 Sicilian Closed - Zukertort |
0-1 | B23 |
| Date | Players & Opening | Result | ECO | View |
|---|---|---|---|---|
| 2025.05.10 | Froeyman,H (2255) vs (2366) Ondersteijn,N Dutch League 2024-25 Pirc - Lizard |
1/2-1/2 | B06 | |
| 2024.11.23 | Ondersteijn,N (2357) vs (2304) Lenaerts,L Dutch League 2024-25 English Anglo-Indian |
1-0 | A15 | |
| 2024.12.14 | Spriestersbach,Kai (2145) vs (2356) Ondersteijn,N Dutch League 2024-25 Pirc Austrian |
1/2-1/2 | B09 | |
| 2024.11.09 | Slagboom,Leandro (2345) vs (2357) Ondersteijn,N Dutch League 2024-25 Nimzo-Indian Saemisch |
1-0 | E28 | |
| 2025.04.05 | Ondersteijn,N (2357) vs (2359) De Schampheleire,G Dutch League 2024-25 English Anglo-Indian - Neo-Catalan Accepted |
1-0 | A13 | |
| 2024.10.12 | Ondersteijn,N (2352) vs (2341) Bosman,M Dutch League 2024-25 English Agincourt - Neo-Catalan Accepted |
1-0 | A13 | |
| 2025.02.08 | Ondersteijn,N (2353) vs (2511) Beerdsen,Thomas Dutch League 2024-25 King's Indian Fianchetto (Classical) - Classical |
1/2-1/2 | E68 | |
| 2025.03.08 | Korneev,O (2467) vs (2355) Ondersteijn,N Dutch League 2024-25 Pirc |
1/2-1/2 | B07 | |
| 2025.04.21 | Ondersteijn,N (2357) vs (2512) Maksimovic,Bojan grenke Chess Open 2025 King's Indian Fianchetto (Classical) - Classical |
0-1 | E68 | |
| 2025.04.20 | Rozen,Eytan (2508) vs (2357) Ondersteijn,N grenke Chess Open 2025 Reti Zukertort |
1-0 | A06 | |
| 2025.04.20 | Ondersteijn,N (2357) vs (2453) Ceres,Dragos grenke Chess Open 2025 English Sicilian |
1-0 | A20 | |
| 2024.10.25 | Ondersteijn,N (2352) vs (2444) Olsen,Filip Boe 39th ECC Open 2024 English Agincourt |
0-1 | A13 | |
| 2025.04.19 | Ondersteijn,N (2357) vs (2466) Aswath,S grenke Chess Open 2025 English Agincourt |
0-1 | A13 | |
| 2024.10.24 | Ondersteijn,N (2352) vs (2406) Hristodoulou,P 39th ECC Open 2024 Reti King's Indian |
0-1 | A07 | |
| 2024.10.23 | Bryakin,M (2438) vs (2352) Ondersteijn,N 39th ECC Open 2024 English Agincourt |
0-1 | A13 | |
| 2024.10.22 | Ondersteijn,N (2352) vs (2097) Bus,T 39th ECC Open 2024 Benko Gambit - Half-Accepted |
1-0 | A57 | |
| 2024.10.21 | Laurusas,T (2573) vs (2352) Ondersteijn,N 39th ECC Open 2024 Irregular Indian |
1/2-1/2 | E10 | |
| 2024.10.20 | Ondersteijn,N (2352) vs (2106) Quinn,R 39th ECC Open 2024 English Sicilian |
1-0 | A20 | |
| 2024.10.26 | Gulbas,C (2340) vs (2352) Ondersteijn,N 39th ECC Open 2024 Pirc - Mariotti |
1-0 | B07 | |
| 2024.09.21 | Ondersteijn,N (2347) vs (2320) Elgersma,Onno Dutch League 2024-25 English Anglo-Indian - Anglo-Grünfeld (Rubinstein) |
1-0 | A16 | |
| 2024.02.03 | Van der Hagen,Loek (2370) vs (2364) Ondersteijn,N Dutch League 2023-24 Pirc |
1-0 | B07 | |
| 2024.04.20 | Ondersteijn,N (2363) vs (2303) Van der Stricht,G Dutch League 2023-24 English Agincourt |
1-0 | A13 | |
| 2024.03.23 | Van Gisbergen,S (2262) vs (2363) Ondersteijn,N Dutch League 2023-24 King's Indian Saemisch |
0-1 | E80 | |
| 2023.10.07 | Ondersteijn,N (2370) vs (2399) Van der Werf,M Dutch League 2023-24 Modern Benoni Knight's Tour - Blumenfeld |
0-1 | A61 | |
| 2023.11.04 | Ondersteijn,N (2366) vs (2347) Wantola,I Dutch League 2023-24 Budapest - Alekhine |
0-1 | A52 | |
| 2023.11.25 | Praet,M (2210) vs (2366) Ondersteijn,N Dutch League 2023-24 Pirc Two Knights - Schlechter |
0-1 | B08 | |
| 2023.09.16 | Konijn,Rob (2092) vs (2378) Ondersteijn,N Dutch League 2023-24 Pirc Austrian - Kurajica |
1-0 | B09 | |
| 2023.08.18 | Ondersteijn,N (2375) vs (2215) Dauw,Sterre Bruges Masters 2023 Sicilian Closed |
1-0 | B23 | |
| 2023.08.17 | Muetsch,Annmarie (2203) vs (2375) Ondersteijn,N Bruges Masters 2023 Sicilian - Hungarian (Maroczy) |
1/2-1/2 | B27 | |
| 2023.08.16 | Ondersteijn,N (2375) vs (2537) Bogner,S Bruges Masters 2023 Irregular Indian |
1/2-1/2 | E10 | |
| 2023.08.15 | Victor,Julian (2107) vs (2375) Ondersteijn,N Bruges Masters 2023 Pirc Two Knights - Quiet |
1/2-1/2 | B08 | |
| 2023.08.15 | Ondersteijn,N (2375) vs (2141) Ohler,Julius Bruges Masters 2023 Bogo-Indian - Nimzovich |
1-0 | E11 | |
| 2023.08.14 | Koridze,Lile (2152) vs (2375) Ondersteijn,N Bruges Masters 2023 Dutch |
0-1 | A84 | |
| 2023.08.13 | Ondersteijn,N (2375) vs (2155) De Boer,Bas Bruges Masters 2023 Vienna Falkbeer (Three Knights) |
1/2-1/2 | C28 | |
| 2023.08.13 | Faybish,Benjamin (2064) vs (2375) Ondersteijn,N Bruges Masters 2023 Modern |
0-1 | A41 | |
| 2023.08.12 | Ondersteijn,N (2375) vs (1900) Govoreanu,Matei Bruges Masters 2023 English Symmetrical |
1-0 | A30 | |
| 2023.10.06 | De Jong,JW (2412) vs (2370) Ondersteijn,N 38th ECC Open 2023 English Anglo-Indian (Queen's Knight) - Szabo |
1/2-1/2 | E62 | |
| 2023.10.04 | Samadov,Read (2492) vs (2370) Ondersteijn,N 38th ECC Open 2023 Catalan Open (Classical) |
1/2-1/2 | E04 | |
| 2023.10.02 | Santos Latasa,J (2650) vs (2370) Ondersteijn,N 38th ECC Open 2023 Sicilian Maroczy - Hungarian |
1-0 | B36 | |
| 2022.12.17 | Ondersteijn,N (2379) vs (2151) Follesa,Enrico Dutch League 2022-23 Semi-Slav |
1-0 | D45 | |
| 2022.11.26 | Schippers,Maurice (2204) vs (2379) Ondersteijn,N Dutch League 2022-23 Pirc |
0-1 | B07 | |
| 2022.11.05 | Ondersteijn,N (2379) vs (2105) IJzermans,Gijs Dutch League 2022-23 Benko Gambit |
1-0 | A57 | |
| 2022.10.08 | Ondersteijn,N (2379) vs (2264) Colijn,S Dutch League 2022-23 English Sicilian |
1/2-1/2 | A20 | |
| 2022.09.17 | Ondersteijn,N (2379) vs (2233) Roggeveen,P Dutch League 2022-23 English Agincourt |
1-0 | A13 | |
| 2023.04.01 | Kollen,Z (2352) vs (2378) Ondersteijn,N Dutch League 2022-23 Pirc |
0-1 | B07 | |
| 2023.04.22 | Ondersteijn,N (2378) vs (2337) Baselmans,Luuk Dutch League 2022-23 Irregular Indian |
1/2-1/2 | E10 | |
| 2023.04.15 | Baltic,Fatih (2267) vs (2378) Ondersteijn,N Dutch League 2022-23 Reti - Wade |
1-0 | A04 | |
| 2023.03.11 | Ondersteijn,N (2377) vs (2412) De Jong,JW Dutch League 2022-23 Slav |
1/2-1/2 | D10 | |
| 2023.05.21 | Smeets,Kobe (2104) vs (2375) Ondersteijn,N 48th OKU 2023 Sicilian - Hungarian (Maroczy) |
1-0 | B27 | |
| 2023.05.21 | Ondersteijn,N (2375) vs (2099) Roorda,T 48th OKU 2023 English Agincourt |
1-0 | A13 | |
| 2023.05.20 | Ondersteijn,N (2375) vs (2249) Sekandar,K 48th OKU 2023 Queen's Gambit Accepted |
0-1 | D20 | |
| 2023.05.20 | Abdulla,Murad (2307) vs (2375) Ondersteijn,N 48th OKU 2023 Robatsch |
1/2-1/2 | B06 | |
| 2023.05.19 | Ondersteijn,N (2375) vs (2044) Ercan,Selman 48th OKU 2023 Slav |
1-0 | D10 | |
| 2023.05.19 | Van Wijk,Peter (2001) vs (2375) Ondersteijn,N 48th OKU 2023 Pirc - Byrne |
0-1 | B07 | |
| 2023.02.23 | Ochs,Daniel Elias (2223) vs (2390) Ondersteijn,N WWRR IM 2023 Indian East Przepiorka - Szabo |
0-1 | E62 | |
| 2023.02.23 | Ondersteijn,N (2390) vs (2265) Dauw,Sterre WWRR IM 2023 Irregular Indian |
1/2-1/2 | E10 | |
| 2023.02.22 | Milliet,S (2376) vs (2390) Ondersteijn,N WWRR IM 2023 Pirc |
1-0 | B07 | |
| 2023.02.21 | Ondersteijn,N (2390) vs (2304) De Waele,Warre WWRR IM 2023 Vienna Falkbeer (Three Knights) |
0-1 | C28 | |
| 2023.02.20 | Ondersteijn,N (2390) vs (2314) Pirard,Natan WWRR IM 2023 Sicilian Closed |
1-0 | B23 | |
| 2023.02.20 | Dgebuadze,A (2419) vs (2390) Ondersteijn,N WWRR IM 2023 Pirc - Byrne |
1/2-1/2 | B07 | |
| 2023.02.19 | Ondersteijn,N (2390) vs (2265) De Vleeschauwer,M WWRR IM 2023 Slav |
1/2-1/2 | D10 | |
| 2023.02.18 | Maerevoet,Sim (2425) vs (2390) Ondersteijn,N WWRR IM 2023 Modern |
1/2-1/2 | A41 | |
| 2023.02.18 | Ondersteijn,N (2390) vs (2343) Baselmans,Luuk WWRR IM 2023 English Four Knights - Romanishin |
0-1 | A28 | |
| 2022.06.06 | Pauly,C (2305) vs (2376) Ondersteijn,N 14th BPB Limburg Open Modern |
0-1 | A41 | |
| 2022.06.06 | Ondersteijn,N (2376) vs (2107) Nemegeer,Arne 14th BPB Limburg Open Caro-Kann - Two Knights |
1-0 | B11 | |
| 2022.06.05 | Kucharska,Honorata (2181) vs (2376) Ondersteijn,N 14th BPB Limburg Open Modern - Szabo |
0-1 | E62 | |
| 2022.06.05 | Ondersteijn,N (2376) vs (2244) Pham,Khoi 14th BPB Limburg Open Nimzovich - Classical |
1/2-1/2 | A01 | |
| 2022.06.03 | Bomans,A (2241) vs (2376) Ondersteijn,N 14th BPB Limburg Open Indian - Trompowsky |
1-0 | A45 | |
| 2022.10.08 | Prohaszka,P2 (2570) vs (2382) Ondersteijn,N 37th ECC Open 2022 Modern |
1-0 | A41 | |
| 2022.10.06 | Ondersteijn,N (2382) vs (2573) Postny,E 37th ECC Open 2022 Queen's Indian Fianchetto |
0-1 | E15 | |
| 2022.10.04 | Maze,S (2530) vs (2382) Ondersteijn,N 37th ECC Open 2022 Pirc |
1-0 | B07 | |
| 2021.08.20 | Roebers,Eline (2173) vs (2376) Ondersteijn,N Brugse Meesters 2021 Pirc |
1-0 | B07 | |
| 2021.08.18 | Carlstedt,J (2442) vs (2376) Ondersteijn,N Brugse Meesters 2021 Indian East Przepiorka |
1-0 | A49 | |
| 2021.08.17 | Ondersteijn,N (2376) vs (2181) Vallet,Ma Brugse Meesters 2021 English Symmetrical |
1-0 | A30 | |
| 2021.08.14 | Bertram,J (1936) vs (2376) Ondersteijn,N Brugse Meesters 2021 Pirc - Byrne |
1-0 | B07 | |
| 2016.10.08 | Ikonnikov, Vy (2538) vs (2391) Ondersteijn, N. Dutch League 2016-17 Sicilian Maroczy Breyer |
1-0 | B39 | |
| 2017.10.07 | Maatman, Nick (2341) vs (2380) Ondersteijn, N. Dutch League 2017-18 Gruenfeld Exchange - Modern |
1/2-1/2 | D85 | |
| 2017.09.16 | Kleijn, C. (2443) vs (2379) Ondersteijn, N. Dutch League 2017-18 Philidor - Exchange |
1/2-1/2 | C41 | |
| 2020.02.18 | Barsegyan, H (2448) vs (2389) Ondersteijn, N 34th Cannes Open 2020 Indian East Indian |
1-0 | A48 | |
| 2018.01.16 | Ondersteijn, N (2370) vs (2546) Santos Latasa, J 43rd Seville Open 2018 English Symmetrical |
0-1 | A30 | |
| 2018.03.30 | Sadzikowski, D (2583) vs (2376) Ondersteijn, N GRENKE Chess Open 2018 Reti - Gurgenidze |
1-0 | B36 | |
| 2018.04.02 | Kollars, Dmitrij (2534) vs (2376) Ondersteijn, N GRENKE Chess Open 2018 Philidor - Exchange (Larsen) |
1-0 | C41 | |
| 2018.04.21 | Fier, A (2574) vs (2379) Ondersteijn, N Dutch League 2017-18 Reti - Gurgenidze |
1-0 | B36 | |
| 2019.04.22 | Ondersteijn, N (2390) vs (2520) Kunin, V GRENKE Chess Open 2019 English |
0-1 | A10 | |
| 2019.04.19 | Ondersteijn, N (2390) vs (2186) Schlichtmann, Robin GRENKE Chess Open 2019 English Anglo-Indian - Anglo-Grünfeld (Czech) |
1-0 | A16 | |
| 2019.04.21 | Ondersteijn, N (2390) vs (2216) Rahul Kumar, P GRENKE Chess Open 2019 English - Snake |
1-0 | A10 | |
| 2019.06.01 | Ondersteijn, N (2395) vs (2172) Pham, Khoi 46th OKU 2019 English - Snake |
1-0 | A10 | |
| 2019.06.02 | Ondersteijn, N (2395) vs (2094) Schouten, Jordy 46th OKU 2019 English Agincourt |
1-0 | A13 | |
| 2015.04.25 | Ondersteijn, N. (2324) vs (2216) Nieuwenhuis, P. Dutch League 2014-15 Modern |
1-0 | A41 | |
| 2016.06.05 | Van de Fliert, W. (2165) vs (2391) Ondersteijn, N. 43rd OKU 2016 Philidor - Exchange |
1-0 | C41 | |
| 2016.06.04 | Ondersteijn, N. (2391) vs (2120) Tikranian, Alik 43rd OKU 2016 Slav Rubinstein |
0-1 | D11 | |
| 2019.08.03 | Ondersteijn, N (2397) vs (2130) Beukes, Dante M 6th Prague Summer Open Nimzovich - Modern |
1/2-1/2 | A01 | |
| 2019.08.04 | Henriksen, G (2154) vs (2397) Ondersteijn, N 6th Prague Summer Open English Symmetrical |
0-1 | A30 | |
| 2019.08.06 | Ondersteijn, N (2397) vs (2190) Brejnik, Gustav 6th Prague Summer Open English Sicilian |
1-0 | A20 | |
| 2015.04.11 | Bosboom, M. (2424) vs (2324) Ondersteijn, N. Dutch League 2014-15 Indian East Indian |
0-1 | A48 | |
| 2015.04.06 | Ondersteijn, N. (2349) vs (2559) Braun, A. 19th Neckar Open 2015 Nimzo-Indian Rubinstein |
1/2-1/2 | E42 | |
| 2015.04.06 | Kollars, Dmitrij (2424) vs (2349) Ondersteijn, N. 19th Neckar Open 2015 Philidor - Exchange |
0-1 | C41 | |
| 2015.04.05 | Ondersteijn, N. (2349) vs (2465) Milov, L. 19th Neckar Open 2015 Benoni |
1-0 | A56 | |
| 2015.04.04 | Ondersteijn, N. (2349) vs (2519) Schmaltz, R. 19th Neckar Open 2015 King's Indian Schwarz (Makogonov) |
0-1 | E71 | |
| 2015.03.21 | Ondersteijn, N. (2324) vs Otten, Remmelt Dutch League 2014-15 Gruenfeld Russian - Simagin |
1/2-1/2 | D97 |
