Player profile
Jonkman, Harmen
Dossier
31 of 32 games analyzed.
Accuracy: 87.1%
Opened e4: 2/3Opened d4: 1/3
Castled kingside: 5Same-side castling: 4Opposite-side castling: 1Castled queenside: 1
Played in the center: 3Played on the kingside: 1Played on the queenside: 1Fianchettoed queenside: 1
Active pieces: 4Initiated exchanges: 4Space advantage: 3Sacrificed material: 3Isolated pawn: 3Backward pawn: 2Missed tactics: 2Kept the bishop pair: 1Avoided exchanges: 1
Openings
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As White 4 games 3W 0D 1L
Sicilian Defense 2 games 1W 0D 1L
Old Sicilian 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Delayed Alapin Variation 1 game 1W 0D 0L
with d6
1 game
1W
0D
0L
Caro-Kann Defense 1 game 1W 0D 0L
Exchange Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Queen's Pawn Game 1 game 1W 0D 0L
London System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
As Black 3 games 0W 0D 3L
Center Game 1 game 0W 0D 1L
Berger Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Ruy Lopez 1 game 0W 0D 1L
Berlin Defense 1 game 0W 0D 1L
Rio Gambit Accepted
1 game
0W
0D
1L
Queen's Gambit Declined 1 game 0W 0D 1L
Exchange Variation 1 game 0W 0D 1L
Reshevsky Variation
1 game
0W
0D
1L
Blunders Top 4 of 170
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 32 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.04.16 | 23rd Bangkok Chess Club Open 2026 | 6.16 | 2026.04.16 Bersamina, Paulo (5206995) (2434) | 0 | - | 1. e4 c5 2. Nf3 Nc6 3. c3 d5 | |
| 2024.10.25 | 39th European Chess Club Cup | 6 | 2024.10.25 Grand, Hans-Henrik (1403567) (2134) | 1 | 90.40% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | |
| 2024.10.24 | 39th European Chess Club Cup | 5 | 2024.10.24 Dragicevic, Drazen (1707922) (2316) | 0 | 90.60% | 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 | |
| 2024.10.23 | 39th European Chess Club Cup | 4 | 2024.10.23 Rigo, Zsolt (14903172) (2389) | 0 | 74.10% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2024.10.22 | 39th European Chess Club Cup | 3 | 2024.10.22 Zlatkov, Anton (15005402) (2323) | 1 | 89.70% | 1. e4 c5 2. Nf3 d6 3. c3 Nf6 | |
| 2024.10.21 | 39th European Chess Club Cup | 2 | 2024.10.21 Van de Lagemaat, Arend (1068466) (2022) | 1 | 94.70% | 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 | |
| 2024.10.20 | Round 1: Tabatabaei, M. Amin - Jonkman, Harmen | 1.27 | 2024.10.20 Tabatabaei, M. Amin (12521213) (2702) | 0 | 82.80% | 1. c4 e6 2. Nc3 d5 3. d4 Nf6 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 9 | 2023.06.12 Iskusnyh, Sergei (4120027) (2440) | 0 | 87.40% | 1. d4 d5 2. c4 dxc4 3. e3 Nf6 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 8 | 2023.06.12 Alsina Leal, Daniel (2252627) (2518) | 1 | 90.80% | 1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 6 | 2023.06.12 Koellner, Ruben Gideon (12993093) (2429) | 0 | 77.00% | 1. d4 d6 2. e4 Nf6 3. Bd3 e5 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 5 | 2023.06.12 Swiercz, Dariusz (1126881) (2640) | 0 | 84.40% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 2 | 2023.06.12 Mekhitarian, Krikor Sevag (2107660) (2537) | 0 | 82.70% | 1. Nf3 d5 2. c4 e6 3. d4 dxc4 | |
| 2023.06.12 | Aimchess Rapid Play-In | Champions Chess Tour | 4 | 2023.06.12 Sasikiran, Krishnan (5004985) (2604) | 0 | 86.40% | 1. d4 Nf6 2. Nf3 g6 3. Nbd2 Bg7 | |
| 2023.05.29 | Limburg Open | 7 | 2023.05.29 Gurevich, Mikhail (200930) (2559) | ½ | 92.30% | 1. d4 d5 2. Nf3 c6 3. Bf4 Nf6 | |
| 2023.05.27 | Limburg Open | 2 | 2023.05.27 Pruijssers, Roeland (1013068) (2534) | 0 | 90.70% | 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 | |
| 2023.04.28 | II CHESSABLE SUNWAY FORMENTERA | 10.16 | 2023.04.28 Maisuradze, Nino (2270) | 1 | 92.60% | 1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ | |
| 2023.04.27 | II CHESSABLE SUNWAY FORMENTERA | 9.19 | 2023.04.27 Sahithi, Varshini M (2260) | ½ | 86.00% | 1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 | |
| 2023.04.26 | II CHESSABLE SUNWAY FORMENTERA | 8.14 | 2023.04.26 Panda, Sambit (2452) | 0 | 92.80% | 1. d4 d5 2. c4 dxc4 3. Nf3 a6 | |
| 2023.04.25 | II CHESSABLE SUNWAY FORMENTERA | 7.19 | 2023.04.25 Southcott-Moyers, Indy (488542) (2112) | 1 | 89.80% | 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 | |
| 2023.04.24 | II CHESSABLE SUNWAY FORMENTERA | 6.17 | 2023.04.24 Doluhanova, Evgeniya (14112035) (2318) | 0 | 93.20% | 1. e4 e6 2. d4 d5 3. exd5 exd5 | |
| 2023.04.22 | II CHESSABLE SUNWAY FORMENTERA | 5.19 | 2023.04.22 Mahitosh, Dey (2154) | 1 | 91.30% | 1. e4 e6 2. d4 d5 3. exd5 exd5 | |
| 2023.04.21 | II CHESSABLE SUNWAY FORMENTERA | 4.15 | 2023.04.21 Vaishali, Rameshbabu (5091756) (2433) | 0 | 87.20% | 1. d4 d5 2. Nf3 Nc6 3. Bf4 Bf5 | |
| 2023.04.20 | Formentera 2023 | 3.5 | 2023.04.20 Fedoseev, Vladimir (24130737) (2674) | 0 | 87.90% | 1. d4 Nf6 2. Nf3 h6 3. c4 e6 | |
| 2023.04.19 | Formentera 2023 | 2.15 | 2023.04.19 Halmeenmaki, Tuomo (502774) (2114) | 1 | 93.60% | 1. Nf3 d5 2. g3 Nc6 3. Bg2 e5 | |
| 2023.04.18 | Formentera 2023 | 1.7 | 2023.04.18 Bernadskiy, Vitaliy (14100371) (2619) | ½ | 92.30% | 1. d4 d5 2. Nf3 e6 3. c4 Nf6 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 2 | 2023.02.03 Azarov, Sergei (13501470) (2556) | 0 | 89.80% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 7 | 2023.02.03 Tristan, Leonardo (113816) (2529) | 0 | 79.50% | 1. e4 e5 2. f4 exf4 3. Nf3 Nf6 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 1 | 2023.02.03 Kravtsiv, Martyn (14113147) (2675) | 0 | 86.90% | 1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 4 | 2023.02.03 Iskusnyh, Sergei (4120027) (2345) | 1 | 86.50% | 1. e4 e6 2. d4 d5 3. e5 c5 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 5 | 2023.02.03 Swiercz, Dariusz (1126881) (2657) | 0 | 90.50% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 3 | 2023.02.03 Mikaelyan, Arman (13304852) (2456) | 0 | 77.40% | 1. e4 c5 2. c3 Nf6 3. e5 Nd5 | |
| 2023.02.03 | Airthings Masters Play-In | Champions Chess Tour | 6 | 2023.02.03 Timofeev, Artyom (4140419) (2551) | 0 | 90.00% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 |