| Feb 11, 2024 | Take Snijders | 0–1 | Leandro Slagboom | Round 7: Take Snijders - Leandro Slagboom | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Feb 11, 2024 | Leandro Slagboom | 1–0 | Mika Kleibeuker | Round 6: Leandro Slagboom - Mika Kleibeuker | English Opening: Caro-Kann Defensive System | |
| Feb 11, 2024 | Leandro Slagboom | 1–0 | Rens Blom | Round 5: Leandro Slagboom - Rens Blom | King's Indian Defense: Semi-Averbakh System | |
| Feb 10, 2024 | Guido Van Hesselingen | 0–1 | Leandro Slagboom | Round 4: Guido Van Hesselingen - Leandro Slagboom | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Feb 10, 2024 | Prajit Sai Kumar | ½–½ | Leandro Slagboom | Round 3: Prajit Sai Kumar - Leandro Slagboom | French Defense: Advance Variation, Euwe Variation | |
| Feb 10, 2024 | Leandro Slagboom | 1–0 | Léon Niemeijer | Round 2: Leandro Slagboom - Léon Niemeijer | King's Indian Defense: Semi-Averbakh System | |
| Feb 10, 2024 | Joaquin Aarts | 0–1 | Leandro Slagboom | Round 1: Joaquin Aarts - Leandro Slagboom | Nimzo-Indian Defense: Kmoch Variation | |
| Dec 30, 2023 | Leandro Slagboom | ½–½ | Titas Stremavicius | Round 9: Leandro Slagboom - Titas Stremavicius | Sicilian Defense: Four Knights Variation | |
| Dec 29, 2023 | Koen Lambrechts | ½–½ | Leandro Slagboom | Round 8: Koen Lambrechts - Leandro Slagboom | Center Game: Berger Variation | |
| Dec 28, 2023 | Leandro Slagboom | ½–½ | Machteld Van Foreest | Round 7: Leandro Slagboom - Machteld Van Foreest | Caro-Kann Defense: Advance Variation, Botvinnik-Carls Defense | |
| Dec 27, 2023 | Aleksejs Adamovics | 0–1 | Leandro Slagboom | Round 6: Aleksejs Adamovics - Leandro Slagboom | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Dec 26, 2023 | Leandro Slagboom | 0–1 | Rick Lahaye | Round 5: Leandro Slagboom - Rick Lahaye | Sicilian Defense: Kupreichik Variation | |
| Dec 24, 2023 | Mees Van Batenburg | 0–1 | Leandro Slagboom | Round 4: Mees Van Batenburg - Leandro Slagboom | French Defense: Winawer Variation, Advance Variation | |
| Dec 23, 2023 | Leandro Slagboom | ½–½ | Selwin Keuning | Round 3: Leandro Slagboom - Selwin Keuning | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | |
| Dec 22, 2023 | Thomas Beerdsen | 1–0 | Leandro Slagboom | Round 2: Thomas Beerdsen - Leandro Slagboom | French Defense: Burn Variation | |
| Oct 22, 2023 | Adam Collins | ½–½ | Leandro Slagboom | Round 5: Adam Collins - Leandro Slagboom | Queen's Gambit Declined: Ragozin Defense | |
| Oct 21, 2023 | Felix Reichmann | 0–1 | Leandro Slagboom | Round 4: Felix Reichmann - Leandro Slagboom | English Opening: Agincourt Defense | |
| Oct 21, 2023 | Leandro Slagboom | ½–½ | Adam Collins | Round 3: Leandro Slagboom - Adam Collins | Sicilian Defense: Classical Variation | |
| Oct 20, 2023 | Deniss Andrijashkin | 0–1 | Leandro Slagboom | Round 2: Deniss Andrijashkin - Leandro Slagboom | King's Indian Attack | |
| Oct 20, 2023 | Leandro Slagboom | ½–½ | Benjamin Defromont | Round 1: Leandro Slagboom - Benjamin Defromont | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation | |
| Aug 3, 2023 | Leandro Slagboom | 0–1 | Mohapatra Sidhant | Round 9: Leandro Slagboom - Mohapatra Sidhant | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Aug 2, 2023 | Casper Schoppen | ½–½ | Leandro Slagboom | Round 8: Casper Schoppen - Leandro Slagboom | Queen's Gambit Declined: Ragozin Defense | |
| Aug 1, 2023 | Leandro Slagboom | 1–0 | Luuk Baselmans | Round 7: Leandro Slagboom - Luuk Baselmans | French Defense: Advance Variation, Euwe Variation | |
| Jul 31, 2023 | Hendrik Decrop | 0–1 | Leandro Slagboom | Round 6: Hendrik Decrop - Leandro Slagboom | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jul 29, 2023 | Leandro Slagboom | 0–1 | Daniel Hausrath | Round 5: Leandro Slagboom - Daniel Hausrath | Caro-Kann Defense: Maróczy Variation | |
| Jul 28, 2023 | Erik Van den Doel | ½–½ | Leandro Slagboom | Round 4: Erik Van den Doel - Leandro Slagboom | Italian Game: Classical Variation, Giuoco Pianissimo, with d6 | |
| Jul 27, 2023 | Leandro Slagboom | 1–0 | Sascha Kurt | Round 3: Leandro Slagboom - Sascha Kurt | Benko Gambit Accepted: Modern Variation | |
| Jul 26, 2023 | Prraneeth Vuppala | 1–0 | Leandro Slagboom | Round 2: Prraneeth Vuppala - Leandro Slagboom | Italian Game: Giuoco Pianissimo, Normal | |
| Jul 25, 2023 | Leandro Slagboom | 1–0 | John Raymond Markus | Round 1: Leandro Slagboom - John Raymond Markus | Pirc Defense: Classical Variation, Quiet System | |
| Jul 8, 2023 | Leandro Slagboom | 1–0 | Rafael Goudriaan | Round 7: Leandro Slagboom - Rafael Goudriaan | Sicilian Defense: Old Sicilian | |
| Jul 8, 2023 | Jan Timman | 1–0 | Leandro Slagboom | Round 6: Jan Timman - Leandro Slagboom | King's Indian Attack | |
| Jul 8, 2023 | Leandro Slagboom | 1–0 | Thomas Reichardt | Round 4: Leandro Slagboom - Thomas Reichardt | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Jul 8, 2023 | Thomas Beerdsen | 1–0 | Leandro Slagboom | Round 3: Thomas Beerdsen - Leandro Slagboom | Scotch Game: Cochrane-Shumov Defense | |
| Dec 26, 2022 | Erik Hoeksema | ½–½ | Leandro Slagboom | Round 4: Erik Hoeksema - Leandro Slagboom | Queen's Gambit Declined: Traditional Variation | |
| Dec 26, 2022 | Leandro Slagboom | 0–1 | Erik Hoeksema | Round 3: Leandro Slagboom - Erik Hoeksema | French Defense: Steinitz Variation, Boleslavsky Variation | |
| Dec 26, 2022 | Erik Hoeksema | ½–½ | Leandro Slagboom | Round 2: Erik Hoeksema - Leandro Slagboom | Nimzo-Larsen Attack: Classical Variation | |
| Dec 26, 2022 | Leandro Slagboom | 1–0 | Erik Hoeksema | Round 1: Leandro Slagboom - Erik Hoeksema | Nimzowitsch Defense: Williams Variation | |
| Oct 22, 2022 | Jakob Weihrauch | ½–½ | Leandro Slagboom | Round 9: Jakob Weihrauch - Leandro Slagboom | French Defense: Winawer Variation, Bogoljubow Variation | |
| Oct 21, 2022 | Leandro Slagboom | 1–0 | Eelke De Boer | Round 8: Leandro Slagboom - Eelke De Boer | Scotch Game | |
| Oct 20, 2022 | Paulo Valiente | 0–1 | Leandro Slagboom | Round 7: Paulo Valiente - Leandro Slagboom | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit Accepted | |
| Oct 19, 2022 | Leandro Slagboom | 1–0 | Jeroen Bollaart | Round 6: Leandro Slagboom - Jeroen Bollaart | Modern Defense: Standard Defense | |
| Oct 19, 2022 | Arthur De Winter | 1–0 | Leandro Slagboom | Round 5: Arthur De Winter - Leandro Slagboom | Sicilian Defense: Najdorf Variation, Adams Attack | |
| Oct 18, 2022 | Leandro Slagboom | 1–0 | Oscar Zecha | Round 4: Leandro Slagboom - Oscar Zecha | Scotch Game: Potter Variation | |
| Oct 17, 2022 | Bhakti Kulkarni | 1–0 | Leandro Slagboom | Round 3: Bhakti Kulkarni - Leandro Slagboom | Queen's Gambit Declined: Semi-Tarrasch Defense, Pillsbury Variation | |
| Oct 16, 2022 | Leandro Slagboom | ½–½ | Robert Hovhannisyan | Round 2: Leandro Slagboom - Robert Hovhannisyan | Caro-Kann Defense: Maróczy Variation | |
| Oct 15, 2022 | Marc Snuverink | 0–1 | Leandro Slagboom | Round 1: Marc Snuverink - Leandro Slagboom | Bird Opening: Sturm Gambit | |
| Sep 7, 2022 | Timothe Razafindratsima | 1–0 | Leandro Slagboom | Round 2: Timothe Razafindratsima - Leandro Slagboom | Sicilian Defense: Najdorf Variation, Freak Attack | |
| Jun 19, 2022 | Leandro Slagboom | ½–½ | Thomas Verfuerth | Round 5: Leandro Slagboom - Thomas Verfuerth | Sicilian Defense: Prins Variation | |
| Jun 17, 2022 | Mansur Gilmanov | * | Leandro Slagboom | Round 2: Mansur Gilmanov - Leandro Slagboom | Queen's Pawn Game | |