Player profile
Slagboom, Leandro
Dossier
172 of 176 games analyzed.
Accuracy: 91.8%
Opened e4: 44/69Opened d4: 12/69Opened c4: 9/69Opened Nf3: 3/69Opened g3: 1/69
Castled kingside: 103Same-side castling: 97Castled queenside: 22Opposite-side castling: 19Did not castle: 14
Played in the center: 52Fianchettoed kingside: 38Played on the queenside: 33Played on the kingside: 28Fianchettoed queenside: 17
Active pieces: 99Initiated exchanges: 87Sacrificed material: 82Kept the bishop pair: 77Space advantage: 73Backward pawn: 70Isolated pawn: 64Avoided exchanges: 30Missed tactics: 22Played gambits: 19
Openings
Click "+" to add that group to the games list below. Multiple groups can be added at once.
As White 70 games 35W 24D 11L
Sicilian Defense 18 games 7W 6D 5L
Moscow Variation 5 games 3W 1D 1L
(unspecified)
4 games
2W
1D
1L
Main Line
1 game
1W
0D
0L
Closed 3 games 1W 0D 2L
(unspecified)
1 game
0W
0D
1L
Anti-Sveshnikov Variation, with d6
1 game
0W
0D
1L
Carlsen Variation
1 game
1W
0D
0L
Delayed Alapin Variation 2 games 2W 0D 0L
with e6
2 games
2W
0D
0L
Modern Variations 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Taimanov Variation 1 game 1W 0D 0L
Bastrikov Variation, English Attack
1 game
1W
0D
0L
Najdorf Variation 1 game 0W 0D 1L
Opocensky Variation
1 game
0W
0D
1L
Accelerated Dragon 1 game 0W 1D 0L
Maróczy Bind
1 game
0W
1D
0L
Classical Variation 1 game 0W 1D 0L
Sozin Attack
1 game
0W
1D
0L
Four Knights Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Kupreichik Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Nyezhmetdinov-Rossolimo Attack 1 game 0W 1D 0L
Fianchetto Variation
1 game
0W
1D
0L
English Opening 8 games 4W 4D 0L
Anglo-Indian Defense 2 games 1W 1D 0L
Flohr-Mikenas-Carls Variation, Nei Gambit
1 game
0W
1D
0L
Queen's Knight Variation
1 game
1W
0D
0L
King's English Variation 2 games 0W 2D 0L
Four Knights Variation, Fianchetto Line
1 game
0W
1D
0L
(unspecified)
1 game
0W
1D
0L
Agincourt Defense 2 games 1W 1D 0L
Neo-Catalan Declined
1 game
1W
0D
0L
Catalan Defense Accepted
1 game
0W
1D
0L
Symmetrical Variation 1 game 1W 0D 0L
Three Knights, Fianchetto Variation
1 game
1W
0D
0L
Mikenas-Carls Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Italian Game 8 games 7W 0D 1L
Two Knights Defense 5 games 4W 0D 1L
Polerio Defense, Bishop Check Line
3 games
3W
0D
0L
Modern Bishop's Opening
2 games
1W
0D
1L
Giuoco Pianissimo 3 games 3W 0D 0L
Italian Four Knights Variation
3 games
3W
0D
0L
King's Indian Defense 5 games 3W 1D 1L
Semi-Averbakh System 4 games 3W 1D 0L
(unspecified)
4 games
3W
1D
0L
Normal Variation 1 game 0W 0D 1L
Standard Development
1 game
0W
0D
1L
Ruy Lopez 5 games 2W 2D 1L
Closed 2 games 1W 1D 0L
Anti-Marshall
1 game
0W
1D
0L
Chigorin Defense
1 game
1W
0D
0L
Morphy Defense 1 game 1W 0D 0L
Norwegian Variation
1 game
1W
0D
0L
Open Berlin Defense 1 game 0W 0D 1L
Showalter Variation
1 game
0W
0D
1L
Berlin Defense 1 game 0W 1D 0L
Rio Gambit Accepted
1 game
0W
1D
0L
Queen's Gambit Declined 3 games 3W 0D 0L
Exchange Variation 1 game 1W 0D 0L
Positional Variation
1 game
1W
0D
0L
Semi-Tarrasch Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Queen's Knight Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
French Defense 3 games 2W 0D 1L
Tarrasch Variation 1 game 1W 0D 0L
Chistyakov Defense
1 game
1W
0D
0L
Rubinstein Variation 1 game 0W 0D 1L
Kasparov Attack
1 game
0W
0D
1L
Steinitz Variation 1 game 1W 0D 0L
Boleslavsky Variation
1 game
1W
0D
0L
Caro-Kann Defense 3 games 0W 2D 1L
Advance Variation 2 games 0W 2D 0L
Tal Variation
1 game
0W
1D
0L
Botvinnik-Carls Defense
1 game
0W
1D
0L
Exchange Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Tarrasch Defense 3 games 1W 2D 0L
Two Knights Variation 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Scotch Game 2 games 1W 1D 0L
Malaniuk Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Mieses Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Pirc Defense 2 games 0W 2D 0L
Classical Variation 1 game 0W 1D 0L
Quiet System
1 game
0W
1D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Petrov's Defense 2 games 0W 2D 0L
Millennium Attack 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Classical Attack 1 game 0W 1D 0L
Staunton Variation
1 game
0W
1D
0L
Nimzo-Indian Defense 2 games 1W 1D 0L
Sämisch Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Rubinstein System 1 game 0W 1D 0L
Rubinstein Variation
1 game
0W
1D
0L
Hungarian Opening 1 game 0W 1D 0L
Indian Defense 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Modern Defense 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Alekhine Defense 1 game 1W 0D 0L
Four Pawns Attack 1 game 1W 0D 0L
Main Line
1 game
1W
0D
0L
Nimzo-Larsen Attack 1 game 1W 0D 0L
Classical Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Indian Defense 1 game 1W 0D 0L
Wade-Tartakower Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Réti Opening 1 game 1W 0D 0L
Anglo-Slav Variation 1 game 1W 0D 0L
Gurevich System
1 game
1W
0D
0L
As Black 73 games 34W 21D 18L
French Defense 17 games 6W 7D 4L
Steinitz Variation 4 games 2W 2D 0L
Boleslavsky Variation
4 games
2W
2D
0L
Classical Variation 3 games 0W 2D 1L
(unspecified)
2 games
0W
1D
1L
Burn Variation
1 game
0W
1D
0L
Winawer Variation 3 games 2W 0D 1L
Advance Variation
2 games
2W
0D
0L
Portisch-Hook Variation
1 game
0W
0D
1L
Advance Variation 3 games 1W 2D 0L
Euwe Variation
2 games
0W
2D
0L
Paulsen Attack
1 game
1W
0D
0L
Tarrasch Variation 2 games 0W 1D 1L
Open System, Euwe-Keres Line
2 games
0W
1D
1L
Alekhine-Chatard Attack 1 game 0W 0D 1L
Albin-Chatard Gambit
1 game
0W
0D
1L
Steiner Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
King's Indian Defense 12 games 7W 4D 1L
Fianchetto Variation 6 games 3W 2D 1L
(unspecified)
3 games
1W
2D
0L
Immediate Fianchetto
2 games
1W
0D
1L
Delayed Fianchetto
1 game
1W
0D
0L
Orthodox Variation 2 games 1W 1D 0L
Glek Defense
2 games
1W
1D
0L
Semi-Averbakh System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Normal Variation 1 game 1W 0D 0L
Rare Defenses
1 game
1W
0D
0L
Karpov System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Queen's Gambit Declined 9 games 5W 1D 3L
Exchange Variation 4 games 3W 0D 1L
Positional Variation
3 games
2W
0D
1L
Carlsen Variation
1 game
1W
0D
0L
Semi-Tarrasch Defense 2 games 1W 0D 1L
(unspecified)
1 game
0W
0D
1L
Main Line
1 game
1W
0D
0L
(unspecified) 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Ragozin Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Indian Defense 5 games 3W 1D 1L
Wade-Tartakower Defense 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
Accelerated London System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Anti-Nimzo-Indian 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Italian Game 5 games 4W 1D 0L
Two Knights Defense 3 games 3W 0D 0L
Modern Bishop's Opening
3 games
3W
0D
0L
Giuoco Pianissimo 1 game 0W 1D 0L
Normal
1 game
0W
1D
0L
Paris Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Benoni Defense 4 games 0W 0D 4L
Classical Variation 1 game 0W 0D 1L
New York Variation
1 game
0W
0D
1L
King's Pawn Line 1 game 0W 0D 1L
with Nge2
1 game
0W
0D
1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Knight's Tour Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Tarrasch Defense 3 games 0W 2D 1L
Symmetrical Variation 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Dubov Tarrasch 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
English Opening 3 games 2W 1D 0L
King's English Variation 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
Anglo-Indian Defense 1 game 1W 0D 0L
King's Indian Formation
1 game
1W
0D
0L
Ruy Lopez 3 games 3W 0D 0L
Morphy Defense 2 games 2W 0D 0L
Classical Defense Deferred
1 game
1W
0D
0L
Møller Variation
1 game
1W
0D
0L
Exchange 1 game 1W 0D 0L
Alekhine Variation
1 game
1W
0D
0L
Queen's Pawn Game 2 games 1W 1D 0L
Symmetrical Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Colle System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Zukertort Opening 2 games 1W 1D 0L
(unspecified) 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
Four Knights Game 2 games 0W 1D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Scotch Variation Accepted 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
King's Indian Attack 2 games 0W 0D 2L
Double Fianchetto 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Nimzo-Larsen Attack 1 game 1W 0D 0L
Modern Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Neo-Grünfeld Defense 1 game 0W 0D 1L
Classical Variation 1 game 0W 0D 1L
Original Defense
1 game
0W
0D
1L
Nimzo-Indian Defense 1 game 1W 0D 0L
Kmoch Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Center Game 1 game 0W 1D 0L
Berger Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Blunders Top 4 of 560
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 176 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.10.31 | Round 3: Van der Werf, Mark - Slagboom, Leandro | 3.9 | 2026.10.31 Van der Werf, Mark (1000470) (2378) | ½ | 92.50% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2026.10.16 | Round 9: Slagboom, Leandro - Koelle, Tobias | 9.8 | 2026.10.16 Koelle, Tobias (16207378) (2504) | 0 | 89.10% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 | |
| 2026.10.15 | Round 8: Prisacaru, Stefan-Emilian - Slagboom, Leandro | 8.10 | 2026.10.15 Prisacaru, Stefan-Emilian (1257285) (2311) | 1 | 95.00% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2026.10.14 | Round 7: Mathieu, Phileas - Slagboom, Leandro | 7.10 | 2026.10.14 Mathieu, Phileas (36048410) (2405) | ½ | 98.60% | 1. c4 c5 2. Nc3 Nf6 3. Nf3 e6 | |
| 2026.10.13 | Round 6: Slagboom, Leandro - Dzida, Kamil | 6.8 | 2026.10.13 Dzida, Kamil (21828652) (2415) | 0 | 81.40% | 1. e4 c5 2. Nc3 d6 3. d4 cxd4 | |
| 2026.10.13 | Round 5: Slagboom, Leandro - Mahmood Shah, Mukhriez Shah | 5.11 | 2026.10.13 Mahmood Shah, Mukhriez Shah (5716934) (2121) | 1 | 85.60% | 1. c4 c5 2. Nc3 Nc6 3. g3 g6 | |
| 2026.10.12 | Round 4: Baum, Jonasz - Slagboom, Leandro | 4.5 | 2026.10.12 Baum, Jonasz (1195360) (2459) | 0 | 86.40% | 1. d4 Nf6 2. c4 g6 3. g3 Bg7 | |
| 2026.10.12 | Round 3: Slagboom, Leandro - Dharmakeerthi, G K Pasindu Nimsara | 3.13 | 2026.10.12 Dharmakeerthi, G K Pasindu Nimsara (9947671) (1929) | 1 | 95.70% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | |
| 2026.10.11 | Round 2: Pang, Tao - Slagboom, Leandro | 2.5 | 2026.10.11 Pang, Tao (8609950) (2444) | 0 | 86.20% | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | |
| 2026.10.10 | Round 1: Slagboom, Leandro - Mthembu, Lovers | 1.18 | 2026.10.10 Mthembu, Lovers (14332337) (1900) | 1 | 92.50% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2026.10.03 | Meesterklasse 202627 | 2.1 | 2026.10.03 Van de Griendt, Jan Willem (1002112) (2358) | ½ | 92.00% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | |
| 2026.09.19 | Round 1: Pham, Khoi - Slagboom, Leandro | 1.3 | 2026.09.19 Pham, Khoi (1054988) (2419) | 0 | 87.30% | 1. Nf3 Nf6 2. c4 c5 3. Nc3 e6 | |
| 2026.07.13 | Amsterdam Chess Festival 2026 - Groep A | 3.2 | 2026.07.13 Wunnink, Michael (1005448) (2187) | 1 | 91.10% | 1. d4 Nf6 2. c4 g6 3. g3 Bg7 | |
| 2026.07.12 | Amsterdam Chess Festival 2026 - Groep A | 2.4 | 2026.07.12 Bakija, Alan (1068016) (2172) | 1 | 93.10% | 1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 | |
| 2026.07.11 | Amsterdam Chess Festival 2026 - Groep A | 1.6 | 2026.07.11 Theulings, Paul-Peter (1002899) (2084) | 1 | 93.40% | 1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 9.1 | 2026.07.10 Van Delft, Merijn (1004670) (2358) | ½ | 97.50% | 1. d4 Nf6 2. Nf3 d5 3. c3 a5 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 8.1 | 2026.07.10 Bhattacharjee, Sourav (1048090) (2188) | 1 | 97.30% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 7.1 | 2026.07.10 Labruyere, Roger (1059505) (2202) | 1 | 90.80% | 1. d4 d5 2. Nf3 Nf6 3. c4 e6 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 6.1 | 2026.07.10 De Boer, Eelke (1048120) (2406) | 1 | 94.90% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 5.1 | 2026.07.10 Schoorl, Rob (1009508) (2284) | ½ | 99.20% | 1. c4 e5 2. g3 d6 3. Nc3 Be7 | |
| 2026.07.10 | Amsterdam Chess Festival 2026 - Groep A | 4.1 | 2026.07.10 Kazarjan, Gachatur (1068750) (2299) | 1 | 96.20% | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | |
| 2026.06.09 | Round 1.2: Warmerdam, Max - Slagboom, Leandro | 2.8 | 2026.06.09 Warmerdam, Max (1048104) (2533) | 0 | 91.80% | 1. d4 Nf6 2. c4 e6 3. Nc3 c5 | |
| 2026.06.09 | Round 1.1: Slagboom, Leandro - Warmerdam, Max | 1.8 | 2026.06.09 Warmerdam, Max (1048104) (2533) | 0 | 88.20% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | |
| 2026.05.24 | Tiebreak partij 4: Van der Werf, Mark - Slagboom, Leandro | 17.1 | 2026.05.24 Van der Werf, Mark (1000470) (2384) | 1 | 97.40% | 1. Nf3 Nf6 2. g3 c5 3. c4 Nc6 | |
| 2026.05.24 | Tiebreak partij 3: Slagboom, Leandro - Van der Werf, Mark | 16.1 | 2026.05.24 Van der Werf, Mark (1000470) (2384) | 1 | 88.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2026.05.24 | Tiebreak partij 2: Slagboom, Leandro - Van der Werf, Mark | 15.1 | 2026.05.24 Van der Werf, Mark (1000470) (2384) | 1 | 89.20% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2026.05.24 | Tiebreak partij 1: Van der Werf, Mark - Slagboom, Leandro | 14.1 | 2026.05.24 Van der Werf, Mark (1000470) (2384) | 0 | 85.30% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | |
| 2026.05.24 | Round 12: Ootes, Lars - Slagboom, Leandro | 12.7 | 2026.05.24 Ootes, Lars (1019708) (2363) | 1 | 87.00% | 1. c4 e5 2. Nc3 d6 3. Nf3 f5 | |
| 2026.05.24 | Round 11: Slagboom, Leandro - De Boer, Eelke | 11.2 | 2026.05.24 De Boer, Eelke (1048120) (2406) | ½ | 90.10% | 1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 | |
| 2026.05.24 | Round 10: Jellema, Pieter - Slagboom, Leandro | 10.6 | 2026.05.24 Jellema, Pieter (1094165) (2193) | 1 | 96.00% | 1. d4 Nf6 2. Bf4 d6 3. Nf3 Nbd7 | |
| 2026.05.24 | Round 9: Slagboom, Leandro - Den Hartog, Marijn | 9.3 | 2026.05.24 Den Hartog, Marijn (1046098) (2209) | 0 | 80.30% | 1. e4 e6 2. d4 d5 3. Nc3 dxe4 | |
| 2026.05.24 | Round 8: Aravindhan, Achyuth - Slagboom, Leandro | 8.7 | 2026.05.24 Aravindhan, Achyuth (1084216) (2213) | 0 | 59.60% | 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 | |
| 2026.05.23 | Round 7: Slagboom, Leandro - Grochal, Joey | 7.4 | 2026.05.23 Grochal, Joey (1019945) (2253) | 1 | 97.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2026.05.23 | Round 6: Bekker, Stefan - Slagboom, Leandro | 6.4 | 2026.05.23 Bekker, Stefan (1022229) (2367) | 1 | 84.00% | 1. Nf3 d6 2. d4 Nf6 3. Nc3 Bf5 | |
| 2026.05.23 | Round 5: Slagboom, Leandro - Pel, Bonno | 5.5 | 2026.05.23 Pel, Bonno (1004760) (2286) | ½ | - | 1. e4 d6 2. d4 g6 3. Nf3 Bg7 | |
| 2026.05.23 | Round 4: Simenon, Jozef - Slagboom, Leandro | 4.3 | 2026.05.23 Simenon, Jozef (1012916) (2288) | 1 | 96.60% | 1. b3 e5 2. Bb2 d6 3. e3 Nf6 | |
| 2026.05.23 | Round 3: Slagboom, Leandro - Kamphuis, Jasper | 3.6 | 2026.05.23 Kamphuis, Jasper (1059025) (2134) | 1 | 94.00% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2026.05.23 | Round 2: Terlouw, Wouter - Slagboom, Leandro | 2.2 | 2026.05.23 Terlouw, Wouter (1087401) (2259) | ½ | 88.90% | 1. d4 Nf6 2. Nf3 d6 3. g3 Nbd7 | |
| 2026.05.23 | Round 1: Slagboom, Leandro - Van der Werf, Mark | 1.7 | 2026.05.23 Van der Werf, Mark (1000470) (2384) | ½ | 93.70% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2026.05.19 | Round 13: Slagboom, Leandro - Grooten, Tommy | 13.1 | 2026.05.19 Grooten, Tommy (1068806) (2356) | 1 | 93.70% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 | |
| 2026.05.16 | Round 5: Slagboom, Leandro - Keuning, Selwin | 5.3 | 2026.05.16 Keuning, Selwin (1034219) (2200) | 1 | 91.10% | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 | |
| 2026.05.14 | Round 1: Slagboom, Leandro - Morsch, Tjeerd | 1.1 | 2026.05.14 Morsch, Tjeerd (40120562) (1922) | 1 | 92.90% | 1. c4 e6 2. Nc3 Nf6 3. e4 d5 | |
| 2026.05.13 | Round 7: Slagboom, Leandro - Van Foreest, Nanne | 7.1 | 2026.05.13 Van Foreest, Nanne (1052020) (1965) | 0 | 79.50% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2026.05.13 | Round 6: Botter, Simon - Slagboom, Leandro | 6.1 | 2026.05.13 Botter, Simon (40107698) (2045) | 1 | 94.70% | 1. Nf3 d6 2. d4 Nf6 3. c4 g6 | |
| 2026.05.13 | Round 4: Mostertman, Milan - Slagboom, Leandro | 4.1 | 2026.05.13 Mostertman, Milan (1025848) (2258) | ½ | 97.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2026.05.13 | Round 3: Slagboom, Leandro - Bruggink, Tycho | 3.1 | 2026.05.13 Bruggink, Tycho (1050028) (2110) | 1 | 85.90% | 1. d4 d5 2. c4 e6 3. Nc3 h6 | |
| 2026.05.13 | Round 2: Kanters, Cor - Slagboom, Leandro | 2.1 | 2026.05.13 Kanters, Cor (1045954) (2024) | 1 | 95.60% | 1. d4 Nf6 2. Nf3 d6 3. c4 g6 | |
| 2026.04.11 | Round 9: Slagboom, Leandro - Tondivar, Babak | 1.9 | 2026.04.11 Tondivar, Babak (12501239) (2279) | ½ | 97.70% | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 | |
| 2026.03.28 | Round 6: Jens, Jelmer - Slagboom, Leandro | 6.7 | 2026.03.28 Jens, Jelmer (1007394) (2378) | 1 | 96.50% | 1. e4 e5 2. Bc4 Nc6 3. Nf3 d6 | |
| 2026.03.07 | Round 8: Kokje, Joris - Slagboom, Leandro | 8.3 | 2026.03.07 Kokje, Joris (1051024) (2269) | 0 | 87.80% | 1. d4 Nf6 2. c4 g6 3. f3 Bg7 | |
| 2026.02.07 | Round 7: Slagboom, Leandro - Lammens, Tim | 7.9 | 2026.02.07 Lammens, Tim (1008803) (2245) | ½ | 94.00% | 1. e4 c6 2. d4 d5 3. e5 Bf5 | |
| 2025.12.26 | Round 5: Vrolijk, Liam - Slagboom, Leandro | 5.2 | 2025.12.26 Vrolijk, Liam (1048333) (2518) | 0 | - | 1. g3 d5 2. Nf3 g6 3. Bg2 Bg7 | |
| 2025.11.22 | Round 4: Slagboom, Leandro - Vandenbussche, Thibaut | 4.4 | 2025.11.22 Vandenbussche, Thibaut (204412) (2402) | ½ | 97.40% | 1. c4 e6 2. Nc3 d5 3. d4 c5 | |
| 2025.11.07 | KNSB competitie 2025/2026 | 3.4 | 2025.11.07 Van der Stricht, Geert (201324) (2297) | ½ | - | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | |
| 2025.10.04 | Round 2: Bijlsma, Nick - Slagboom, Leandro | 2.1 | 2025.10.04 Bijlsma, Nick (1007041) (2280) | ½ | 91.70% | 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 | |
| 2025.05.13 | KNSB Meesterklasse 2024-2025 | 9.3 | 2025.05.13 Lenaerts, Lennert (211435) (2322) | ½ | - | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2025.04.05 | Round 8: Slagboom, Leandro - Tabak, Stefan | 8.6 | 2025.04.05 Tabak, Stefan (1008048) (2096) | 0 | 81.30% | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 | |
| 2025.03.08 | Round 7: Slagboom, Leandro - Van der Werf, Mark | 1.5 | 2025.03.08 Van der Werf, Mark (1000470) (2388) | 1 | 92.30% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2025.02.08 | Round 6: Pham, Khoi - Slagboom, Leandro | 6.7 | 2025.02.08 Pham, Khoi (1054988) (2372) | 0 | 86.50% | 1. d4 Nf6 2. c4 e6 3. Nf3 c5 | |
| 2025.02.02 | Tata Steel Chess Qualifiers | 9.2 | 2025.02.02 Smeets, Kobe (1063910) (2361) | 0 | 88.40% | 1. e4 e6 2. d4 d5 3. Nc3 Bb4 | |
| 2025.02.01 | Tata Steel Chess Qualifiers | 8.4 | 2025.02.01 Lohia, Sohum (5819369) (2368) | ½ | 98.10% | 1. c4 Nf6 2. Nc3 e6 3. e4 c5 | |
| 2025.01.31 | Tata Steel Chess Qualifiers | 7.3 | 2025.01.31 Sofronie, Iulian (1202936) (2380) | 1 | 95.50% | 1. d4 Nf6 2. Nc3 e6 3. Bf4 Bb4 | |
| 2025.01.29 | Tata Steel Chess Qualifiers | 6.4 | 2025.01.29 Holzke, Frank (4600428) (2426) | 1 | 93.10% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2025.01.28 | Tata Steel Chess Qualifiers | 5.5 | 2025.01.28 Zwirs, Nico (1036432) (2476) | 1 | 97.80% | 1. Nf3 Nf6 2. d4 d5 3. e3 c5 | |
| 2025.01.27 | Tata Steel Chess Qualifiers | 4.1 | 2025.01.27 Grutter, Tim (1057472) (2380) | 1 | 94.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2025.01.26 | Tata Steel Chess Qualifiers | 3.5 | 2025.01.26 Panesar Vedant (35033018) (2446) | ½ | 98.00% | 1. e4 e6 2. d4 d5 3. e5 c5 | |
| 2025.01.25 | Tata Steel Chess Qualifiers | 2.3 | 2025.01.25 Tudor, Henry Edward (2409836) (2375) | 0 | 87.30% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.01.24 | Tata Steel Chess Qualifiers | 1.1 | 2025.01.24 Beukema, Stefan (1024523) (2423) | ½ | 93.00% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2024.12.30 | Round 9: Duijker, Rick - Slagboom, Leandro | 9.12 | 2024.12.30 Duijker, Rick (1010565) (2146) | 1 | 98.20% | 1. c4 Nf6 2. Nf3 g6 3. Nc3 Bg7 | |
| 2024.12.29 | Round 8: Slagboom, Leandro - Ritzerveld, Noah | 8.13 | 2024.12.29 Ritzerveld, Noah (1085760) (2182) | ½ | 95.70% | 1. c4 e5 2. g3 Nf6 3. Bg2 d5 | |
| 2024.12.28 | Round 7: Cernov, Henrik - Slagboom, Leandro | 7.10 | 2024.12.28 Cernov, Henrik (16258312) (2187) | 0 | 83.60% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2024.12.27 | Round 6: Slagboom, Leandro - Albers, Sasa | 6.10 | 2024.12.27 Albers, Sasa (1068253) (2268) | ½ | 97.90% | 1. g3 Nf6 2. Bg2 d5 3. Nf3 Nbd7 | |
| 2024.12.26 | Round 5: Laxman, R.R. - Slagboom, Leandro | 5.9 | 2024.12.26 Laxman, R.R. (5005361) (2310) | ½ | 93.20% | 1. Nf3 Nf6 2. g3 c5 3. c4 Nc6 | |
| 2024.12.24 | Round 4: Slagboom, Leandro - Schoppen, Casper | 4.3 | 2024.12.24 Schoppen, Casper (1046730) (2539) | 0 | 87.80% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2024.12.23 | Round 3: Van Roon, Sjoerd - Slagboom, Leandro | 3.12 | 2024.12.23 Van Roon, Sjoerd (1051075) (2285) | 1 | 89.40% | 1. e4 e6 2. d4 d5 3. Nc3 Bb4 | |
| 2024.12.22 | Round 2: Slagboom, Leandro - Grooten, Herman | 2.17 | 2024.12.22 Grooten, Herman (1000330) (2183) | 1 | 94.30% | 1. e4 c5 2. Nf3 e6 3. c3 Nf6 | |
| 2024.12.21 | Round 1: Hummel, Paul - Slagboom, Leandro | 1.12 | 2024.12.21 Hummel, Paul (1021168) (2160) | ½ | 92.10% | 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 | |
| 2024.12.14 | KNSB | 5.7 | 2024.12.14 Baselmans, Luuk (1051008) (2350) | ½ | 97.80% | 1. c4 e5 2. d3 Bb4+ 3. Nd2 Nf6 | |
| 2024.11.23 | Meesterklasse 24-25 | 4.5 | 2024.11.23 Cardon, Helmut (1000365) (2324) | 1 | 96.30% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2024.11.09 | Round 3: Slagboom, Leandro - Ondersteijn, Niels | 3.5 | 2024.11.09 Ondersteijn, Niels (1011162) (2357) | 1 | 93.30% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2024.11.02 | Round 9: De Wit, Michel - Slagboom, Leandro | 9.8 | 2024.11.02 De Wit, Michel (1002210) (2095) | 1 | 94.90% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.11.01 | Round 8: Slagboom, Leandro - Bosboom, Manuel | 8.2 | 2024.11.01 Bosboom, Manuel (1000080) (2347) | 0 | 78.30% | 1. e4 g6 2. d4 Bg7 3. Nf3 c6 | |
| 2024.10.31 | Round 7: Labruyere, Roger - Slagboom, Leandro | 7.4 | 2024.10.31 Labruyere, Roger (1059505) (2286) | ½ | 96.50% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2024.10.30 | Round 6: Slagboom, Leandro - Ten Dam, Bram | 6.8 | 2024.10.30 Ten Dam, Bram (40104877) (2006) | 1 | 94.70% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 | |
| 2024.10.30 | Round 5: Bakija, Alan - Slagboom, Leandro | 5.8 | 2024.10.30 Bakija, Alan (1068016) (2192) | 1 | 94.90% | 1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 | |
| 2024.10.28 | Round 3: Slagboom, Leandro - Sankalp Gupta | 3.2 | 2024.10.28 Sankalp Gupta (5097010) (2534) | 0 | 83.00% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.10.27 | Round 2: Boeren, Jurriaan - Slagboom, Leandro | 2.8 | 2024.10.27 Boeren, Jurriaan (1067478) (2159) | 1 | 98.50% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.10.26 | Round 1: Slagboom, Leandro - Kukushkin, Ivan | 1.12 | 2024.10.26 Kukushkin, Ivan (11634103) (2084) | 1 | 93.60% | 1. Nf3 Nf6 2. c4 e6 3. g3 d5 | |
| 2024.10.12 | Round 2: Slagboom, Leandro - Van Delft, Merijn | 2.6 | 2024.10.12 Van Delft, Merijn (1004670) (2360) | ½ | 93.90% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2024.09.21 | KNSB Meesterklasse 2024-2025 | 1.6 | 2024.09.21 Strating, Sybolt (1002694) (2307) | ½ | 93.50% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2024.08.31 | EYCC 2024 - O18 | 9.15 | 2024.08.31 Bermudez Ureba, Juan Diego (54501199) (2183) | 1 | 85.50% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.08.30 | EYCC 2024 - O18 | 8.12 | 2024.08.30 Hak, David (377007) (2239) | ½ | 89.60% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.08.29 | EYCC 2024 - O18 | 7.3 | 2024.08.29 Sokolovsky, Yahli (2820242) (2522) | 0 | 92.70% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2024.08.28 | EYCC 2024 - O18 | 6.12 | 2024.08.28 Valiyev, Shahin (13424203) (2245) | 1 | 93.90% | 1. e4 c5 2. Nc3 d6 3. d4 cxd4 | |
| 2024.08.26 | EYCC 2024 - O18 | 5.5 | 2024.08.26 Kasipour Azbari, Seyed Arvin (22501657) (2212) | 1 | 94.80% | 1. e4 e6 2. d4 d5 3. e5 c5 | |
| 2024.08.25 | EYCC 2024 - O18 | 4.16 | 2024.08.25 Backiel, Hubert (21838631) (2216) | ½ | 85.90% | 1. c4 e6 2. g3 d5 3. Bg2 Nf6 | |
| 2024.08.24 | EYCC 2024 - O18 | 3.6 | 2024.08.24 Stalmach, Richard (372048) (2443) | 0 | 85.30% | 1. d4 Nf6 2. c4 e6 3. Nc3 c5 | |
| 2024.08.23 | EYCC 2024 - O18 | 2.5 | 2024.08.23 Vilimek, Vit (23718218) (2203) | 1 | 96.20% | 1. c4 Nf6 2. Nc3 g6 3. e4 Nc6 | |
| 2024.08.22 | EYCC 2024 - O18 | 1.8 | 2024.08.22 Sinitsyn, Anton (515191) (2005) | 1 | 94.10% | 1. c4 e6 2. Nc3 d5 3. d4 Nf6 | |
| 2024.08.01 | Round 9: Slagboom, Leandro - Kazarjan, Gachatur | 9.7 | 2024.08.01 Kazarjan, Gachatur (1068750) (2100) | 1 | 94.20% | 1. d4 d5 2. c4 e6 3. Nc3 c5 | |
| 2024.07.31 | Round 8: Maatman, Nick - Slagboom, Leandro | 8.5 | 2024.07.31 Maatman, Nick (1040391) (2383) | 0 | 85.70% | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | |
| 2024.07.30 | Round 7: Slagboom, Leandro - Weidemann, Jakob | 7.6 | 2024.07.30 Weidemann, Jakob (16255470) (2142) | ½ | 98.00% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.07.29 | Round 6: Ritzerveld, Noah - Slagboom, Leandro | 6.6 | 2024.07.29 Ritzerveld, Noah (1085760) (2181) | ½ | 96.00% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2024.07.27 | Round 5: Slagboom, Leandro - De Boer, Eelke | 5.4 | 2024.07.27 De Boer, Eelke (1048120) (2384) | ½ | 90.70% | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 | |
| 2024.07.26 | Round 4: Buckels, Valentin - Slagboom, Leandro | 4.3 | 2024.07.26 Buckels, Valentin (12942766) (2478) | ½ | 99.40% | 1. c4 e6 2. Nc3 c5 3. Nf3 Nc6 | |
| 2024.07.25 | Round 3: Slagboom, Leandro - Leenhouts, Koen | 3.2 | 2024.07.25 Leenhouts, Koen (1008439) (2454) | ½ | 94.00% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2024.07.24 | Round 2: Blok, Xaveer - Slagboom, Leandro | 2.8 | 2024.07.24 Blok, Xaveer (1092723) (1885) | 1 | 96.00% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2024.07.23 | Round 1: Slagboom, Leandro - Zwirs, Jasper | 1.9 | 2024.07.23 Zwirs, Jasper (1041444) (2088) | 1 | 95.30% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 | |
| 2024.07.09 | Quarter-Finals | Game 2: Warmerdam, Max - Slagboom, Leandro | 6.3 | 2024.07.09 Warmerdam, Max (1048104) (2663) | 0 | 89.30% | 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 | |
| 2024.07.08 | Quarter-Finals | Game 1: Slagboom, Leandro - Warmerdam, Max | 5.3 | 2024.07.08 Warmerdam, Max (1048104) (2663) | ½ | 99.00% | 1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 | |
| 2024.07.07 | Round of 16 | Game 2: Schoppen, Casper - Slagboom, Leandro | 2.8 | 2024.07.07 Schoppen, Casper (1046730) (2551) | ½ | 88.20% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | |
| 2024.07.06 | Round of 16 | Game 1: Slagboom, Leandro - Schoppen, Casper | 1.8 | 2024.07.06 Schoppen, Casper (1046730) (2551) | 1 | 95.00% | 1. e4 c5 2. Nf3 e6 3. c3 Nf6 | |
| 2024.06.23 | Round 6: Slagboom, Leandro - Vrolijk, Liam | 2024.06.23 Vrolijk, Liam (1048333) (2536) | ½ | 95.60% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | ||
| 2024.06.23 | Round 5: Hommes, Elmar - Slagboom, Leandro | 2024.06.23 Hommes, Elmar (1017136) (2080) | 1 | 98.10% | 1. d4 Nf6 2. Nf3 d5 3. c4 e6 | ||
| 2024.06.22 | Round 4: Slagboom, Leandro - Schilstra, Laurens | 2024.06.22 Schilstra, Laurens (1043218) (2157) | 1 | 91.30% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | ||
| 2024.06.22 | Round 3: Van Rootselaar, Rik - Slagboom, Leandro | 2024.06.22 Van Rootselaar, Rik (1088572) (2111) | 0 | 84.80% | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | ||
| 2024.06.21 | Round 2: Slagboom, Leandro - Kooiman, Tobi | 2024.06.21 Kooiman, Tobi (1037285) (2069) | 1 | 97.40% | 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 | ||
| 2024.06.21 | Round 1: Schoonackers, Jeroen - Slagboom, Leandro | 2024.06.21 Schoonackers, Jeroen (1034863) (1990) | 1 | 98.40% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | ||
| 2024.05.03 | Tiebreak round 3: Slagboom, Leandro - Bakija, Alan | 2024.05.03 Bakija, Alan (1068016) (2095) | 1 | 86.20% | 1. Nf3 d5 2. b3 Nf6 3. Bb2 c6 | ||
| 2024.05.03 | Tiebreak round 2: Slagboom, Leandro - Bakija, Alan | 2024.05.03 Bakija, Alan (1068016) (2095) | 1 | 88.80% | 1. Nf3 d6 2. d4 Nf6 3. c4 g6 | ||
| 2024.05.03 | Tiebreak round 1: Bakija, Alan - Slagboom, Leandro | 2024.05.03 Bakija, Alan (1068016) (2095) | 0 | 61.70% | 1. Nf3 d5 2. g3 Nc6 3. d4 g6 | ||
| 2024.05.03 | Round 7: Slagboom, Leandro - Van Hesselingen, Guido | 2024.05.03 Van Hesselingen, Guido (1085735) (2040) | 1 | 98.40% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | ||
| 2024.05.02 | Round 6: Snijders, Take - Slagboom, Leandro | 2024.05.02 Snijders, Take (1090380) (2090) | 1 | 93.60% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | ||
| 2024.05.01 | Round 5: Smid, Jelle - Slagboom, Leandro | 2024.05.01 Smid, Jelle (1091131) (1915) | ½ | 90.10% | 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 | ||
| 2024.04.30 | Round 4: Slagboom, Leandro - Bakija, Alan | 2024.04.30 Bakija, Alan (1068016) (2101) | ½ | 73.90% | 1. e4 d6 2. d4 Nf6 3. Bd3 e5 | ||
| 2024.04.29 | Round 3: Labruyere, Roger - Slagboom, Leandro | 2024.04.29 Labruyere, Roger (1059505) (2267) | 1 | 97.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.04.28 | Round 2: Slagboom, Leandro - Moskalets, Sofiia | 2024.04.28 Moskalets, Sofiia (34144293) (2050) | ½ | 95.10% | 1. d4 d5 2. c4 e6 3. Nc3 c5 | ||
| 2024.04.27 | Round 1: Blom, Rens - Slagboom, Leandro | 2024.04.27 Blom, Rens (1063847) (1963) | 1 | 96.20% | 1. c4 e6 2. e4 c5 3. Nc3 Nc6 | ||
| 2023.10.28 | Hoogeveen Open 2023 | 9.7 | 2023.10.28 Kiran, Manisha Mohanty (5019575) (2034) | 1 | 94.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2023.10.27 | Hoogeveen Open 2023 | 8.12 | 2023.10.27 Maris, Ivo (1028146) (2404) | 1 | 83.30% | 1. e3 d5 2. Nf3 e6 3. b3 Nf6 | |
| 2023.10.26 | Hoogeveen Open 2023 | 7.11 | 2023.10.26 Fehr, Axel, Dr. (4675185) (2011) | 1 | 94.30% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2023.10.25 | Hoogeveen Open 2023 | 6.8 | 2023.10.25 Swati Ghate (5003474) (1995) | 0 | 85.50% | 1. e4 e6 2. d4 d5 3. e5 c5 | |
| 2023.10.25 | Hoogeveen Open 2023 | 5.4 | 2023.10.25 Zwirs, Nico (1036432) (2451) | 0 | 84.40% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2023.10.24 | Hoogeveen Open 2023 | 4.7 | 2023.10.24 Kett, Tim (1801210) (2130) | 1 | 86.10% | 1. e4 e6 2. d4 d5 3. Nc3 Bb4 | |
| 2023.10.23 | Hoogeveen Open 2023 | 3.12 | 2023.10.23 Arnold, Rhys (1068849) (2087) | 1 | 90.70% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2023.05.28 | Limburg Open | 4 | 2023.05.28 Schroeder, Jan-Christian (24662259) (2553) | ½ | 96.20% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2023.05.06 | NJSK 2023 Jeugd A | 7.1 | 2023.05.06 Van der Hagen, Loek (1052853) (2273) | 0 | 89.90% | 1. d4 Nf6 2. c4 g6 3. Nc3 d5 | |
| 2023.05.05 | NJSK 2023 Jeugd A | 6.1 | 2023.05.05 De Winter, Arthur (1069020) (2374) | 1 | 95.50% | 1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 | |
| 2023.05.04 | NJSK 2023 Jeugd A | 5.2 | 2023.05.04 Achuthan, Dylan (2045) | 1 | 90.90% | 1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 | |
| 2023.05.03 | NJSK 2023 Jeugd A | 4.3 | 2023.05.03 Moskalets, Sofiia (34144293) (1722) | ½ | 91.60% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2023.05.02 | NJSK 2023 Jeugd A | 3.4 | 2023.05.02 Adams, Oscar (1091107) (1760) | 1 | 93.20% | 1. d4 d6 2. e4 c6 3. Nf3 g6 | |
| 2023.05.01 | NJSK 2023 Jeugd A | 2.2 | 2023.05.01 Van Kuijk, Vadim (1058274) (1968) | 0 | 74.00% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2023.04.30 | NJSK 2023 Jeugd A | 1.3 | 2023.04.30 Van Rootselaar, Rik (1088572) (1812) | 1 | 89.60% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.02.11 | Round 7: Take Snijders - Leandro Slagboom | 2024.02.11 Take Snijders | 1 | 95.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.02.11 | Round 6: Leandro Slagboom - Mika Kleibeuker | 2024.02.11 Mika Kleibeuker | 1 | 87.20% | 1. c4 c6 2. Nf3 d5 3. e3 Nf6 | ||
| 2024.02.11 | Round 5: Leandro Slagboom - Rens Blom | 2024.02.11 Rens Blom | 1 | 93.90% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | ||
| 2024.02.10 | Round 4: Guido Van Hesselingen - Leandro Slagboom | 2024.02.10 Guido Van Hesselingen | 1 | 97.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.02.10 | Round 3: Prajit Sai Kumar - Leandro Slagboom | 2024.02.10 Prajit Sai Kumar | ½ | 96.00% | 1. e4 e6 2. d4 d5 3. e5 c5 | ||
| 2024.02.10 | Round 2: Leandro Slagboom - Léon Niemeijer | 2024.02.10 Léon Niemeijer | 1 | 92.40% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | ||
| 2024.02.10 | Round 1: Joaquin Aarts - Leandro Slagboom | 2024.02.10 Joaquin Aarts | 1 | 82.90% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | ||
| 2023.12.30 | Round 9: Leandro Slagboom - Titas Stremavicius | 2023.12.30 Titas Stremavicius (2550) | ½ | 96.70% | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 | ||
| 2023.12.29 | Round 8: Koen Lambrechts - Leandro Slagboom | 2023.12.29 Koen Lambrechts (2290) | ½ | 93.80% | 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 | ||
| 2023.12.28 | Round 7: Leandro Slagboom - Machteld Van Foreest | 2023.12.28 Machteld Van Foreest (2344) | ½ | 96.80% | 1. e4 c6 2. d4 d5 3. e5 c5 | ||
| 2023.12.27 | Round 6: Aleksejs Adamovics - Leandro Slagboom | 2023.12.27 Aleksejs Adamovics (2015) | 1 | 94.90% | 1. c4 e6 2. Nc3 d5 3. d4 Nf6 | ||
| 2023.12.26 | Round 5: Leandro Slagboom - Rick Lahaye | 2023.12.26 Rick Lahaye (2439) | 0 | 82.10% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.12.24 | Round 4: Mees Van Batenburg - Leandro Slagboom | 2023.12.24 Mees Van Batenburg (2109) | 1 | 94.10% | 1. e4 e6 2. d4 d5 3. Nc3 Bb4 | ||
| 2023.12.23 | Round 3: Leandro Slagboom - Selwin Keuning | 2023.12.23 Selwin Keuning (2139) | ½ | 91.80% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| 2023.12.22 | Round 2: Thomas Beerdsen - Leandro Slagboom | 2023.12.22 Thomas Beerdsen (2511) | 0 | 88.50% | 1. e4 e6 2. d4 d5 3. Nc3 Nf6 | ||
| 2023.10.22 | Round 5: Adam Collins - Leandro Slagboom | 2023.10.22 Adam Collins (2119) | ½ | 86.30% | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | ||
| 2023.10.21 | Round 4: Felix Reichmann - Leandro Slagboom | 2023.10.21 Felix Reichmann (1961) | 1 | 98.30% | 1. c4 e6 2. Nf3 d5 3. d4 Nf6 | ||
| 2023.10.21 | Round 3: Leandro Slagboom - Adam Collins | 2023.10.21 Adam Collins (2119) | ½ | 93.60% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.10.20 | Round 2: Deniss Andrijashkin - Leandro Slagboom | 2023.10.20 Deniss Andrijashkin (2109) | 1 | 95.20% | 1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 | ||
| 2023.10.20 | Round 1: Leandro Slagboom - Benjamin Defromont | 2023.10.20 Benjamin Defromont (2418) | ½ | 94.80% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.08.03 | Round 9: Leandro Slagboom - Mohapatra Sidhant | 2023.08.03 Mohapatra Sidhant | 0 | 92.20% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2023.08.02 | Round 8: Casper Schoppen - Leandro Slagboom | 2023.08.02 Casper Schoppen | ½ | 96.90% | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | ||
| 2023.08.01 | Round 7: Leandro Slagboom - Luuk Baselmans | 2023.08.01 Luuk Baselmans | 1 | 98.30% | 1. e4 e6 2. d4 d5 3. e5 c5 | ||
| 2023.07.31 | Round 6: Hendrik Decrop - Leandro Slagboom | 2023.07.31 Hendrik Decrop | 1 | 97.60% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | ||
| 2023.07.29 | Round 5: Leandro Slagboom - Daniel Hausrath | 2023.07.29 Daniel Hausrath | 0 | 82.10% | 1. e4 c6 2. d4 d5 3. f3 Qb6 | ||
| 2023.07.28 | Round 4: Erik Van den Doel - Leandro Slagboom | 2023.07.28 Erik Van den Doel | ½ | 98.10% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.07.27 | Round 3: Leandro Slagboom - Sascha Kurt | 2023.07.27 Sascha Kurt | 1 | 96.80% | 1. d4 Nf6 2. c4 c5 3. d5 b5 | ||
| 2023.07.26 | Round 2: Prraneeth Vuppala - Leandro Slagboom | 2023.07.26 Prraneeth Vuppala (46622373) | 0 | 89.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.07.25 | Round 1: Leandro Slagboom - John Raymond Markus | 2023.07.25 John Raymond Markus | 1 | 96.40% | 1. e4 g6 2. d4 Bg7 3. Nf3 d6 | ||
| 2023.07.08 | Round 7: Leandro Slagboom - Rafael Goudriaan | 2023.07.08 Rafael Goudriaan | 1 | 96.40% | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 | ||
| 2023.07.08 | Round 6: Jan Timman - Leandro Slagboom | 2023.07.08 Jan Timman | 0 | 88.40% | 1. Nf3 d5 2. g3 Nc6 3. d4 Bf5 | ||
| 2023.07.08 | Round 4: Leandro Slagboom - Thomas Reichardt | 2023.07.08 Thomas Reichardt | 1 | 82.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2023.07.08 | Round 3: Thomas Beerdsen - Leandro Slagboom | 2023.07.08 Thomas Beerdsen | 0 | 78.50% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 |