Player profile
De Jong, Jan-Willem
Dossier
30 of 34 games analyzed.
Accuracy: 92.4%
Opened d4: 8/11Opened Nf3: 2/11Opened c4: 1/11
Castled kingside: 23Same-side castling: 21Castled queenside: 3Opposite-side castling: 3Did not castle: 1
Played in the center: 9Played on the kingside: 6Fianchettoed queenside: 5Played on the queenside: 5Fianchettoed kingside: 4
Active pieces: 21Initiated exchanges: 19Isolated pawn: 13Space advantage: 13Kept the bishop pair: 12Backward pawn: 12Sacrificed material: 10Avoided exchanges: 4Missed tactics: 2Accepted short draws: 1
Openings
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As White 13 games 5W 5D 3L
King's Indian Defense 3 games 2W 1D 0L
Normal Variation 1 game 0W 1D 0L
Rare Defenses
1 game
0W
1D
0L
Semi-Averbakh System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Orthodox Variation 1 game 1W 0D 0L
Positional Defense
1 game
1W
0D
0L
Queen's Gambit Declined 3 games 0W 2D 1L
Barmen Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Exchange Variation 1 game 0W 1D 0L
Positional Variation
1 game
0W
1D
0L
Harrwitz Attack 1 game 0W 0D 1L
Main Line
1 game
0W
0D
1L
Nimzo-Indian Defense 2 games 1W 0D 1L
Normal Variation 1 game 0W 0D 1L
Botvinnik System
1 game
0W
0D
1L
Classical Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Dutch Defense 1 game 0W 1D 0L
Classical Variation 1 game 0W 1D 0L
Huisl Variation
1 game
0W
1D
0L
English Opening 1 game 0W 1D 0L
Agincourt Defense 1 game 0W 1D 0L
Neo-Catalan Declined
1 game
0W
1D
0L
Modern Defense 1 game 1W 0D 0L
Kotov Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Slav Defense 1 game 0W 0D 1L
Quiet Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Tarrasch Defense 1 game 1W 0D 0L
Schara Gambit 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
As Black 18 games 5W 10D 3L
Slav Defense 4 games 1W 3D 0L
Modern Line 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Quiet Variation 1 game 0W 1D 0L
Schallopp Defense
1 game
0W
1D
0L
Italian Game 3 games 1W 1D 1L
Two Knights Defense 2 games 0W 1D 1L
Polerio Defense, Bishop Check Line
1 game
0W
0D
1L
Modern Bishop's Opening
1 game
0W
1D
0L
Scotch Gambit 1 game 1W 0D 0L
Max Lange Attack
1 game
1W
0D
0L
Ruy Lopez 3 games 0W 3D 0L
Open 2 games 0W 2D 0L
Main Line
1 game
0W
1D
0L
(unspecified)
1 game
0W
1D
0L
Exchange Variation 1 game 0W 1D 0L
King's Bishop Variation
1 game
0W
1D
0L
King's Indian Attack 2 games 0W 1D 1L
Double Fianchetto 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
English Opening 1 game 0W 1D 0L
Caro-Kann Defensive System 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Neo-Grünfeld Defense 1 game 0W 1D 0L
Classical Variation 1 game 0W 1D 0L
Original Defense
1 game
0W
1D
0L
Scotch Game 1 game 1W 0D 0L
Mieses Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Queen's Pawn Game 1 game 0W 0D 1L
Symmetrical Variation 1 game 0W 0D 1L
Pseudo-Catalan
1 game
0W
0D
1L
Rapport-Jobava System 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Semi-Slav Defense 1 game 1W 0D 0L
Chigorin Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Blunders Top 4 of 88
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 34 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.10.19 | Round 3: Dedebas, Emre Emin - De Jong, Jan-Willem | 3.27 | 2026.10.19 Dedebas, Emre Emin (6349005) (2322) | ½ | 91.20% | 1. c4 c6 2. Nf3 d5 3. g3 g6 | |
| 2026.10.03 | Round 2: Kurt, Sascha - De Jong, Jan-Willem | 2.8 | 2026.10.03 Kurt, Sascha (1082647) (2278) | 0 | 67.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2026.04.11 | Round 9: De Jong, Jan-Willem - Van Batenburg, Mees | 1.6 | 2026.04.11 Van Batenburg, Mees (1078259) (2225) | ½ | 95.60% | 1. Nf3 f5 2. g3 Nf6 3. Bg2 d6 | |
| 2026.03.28 | Round 6: Van Foreest, Machteld - De Jong, Jan-Willem | 6.10 | 2026.03.28 Van Foreest, Machteld (1051563) (2307) | ½ | 98.00% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2026.03.08 | KNSB competitie 2025/2026 | 8.8 | 2026.03.08 Burg, Twan (1010697) (2479) | ½ | - | 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 | |
| 2026.02.07 | Round 7: Sprangers, Remco - De Jong, Jan-Willem | 1.9 | 2026.02.07 Sprangers, Remco (1016016) (2219) | 1 | - | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | |
| 2025.11.22 | Round 4: De Jong, Jan-Willem - Kerigan, Demre | 4.7 | 2025.11.22 Kerigan, Demre (6307841) (2362) | ½ | 97.20% | 1. d4 d6 2. Nf3 Nf6 3. c4 g6 | |
| 2025.11.07 | KNSB competitie 2025/2026 | 3.8 | 2025.11.07 Zwirs, Nico (1036432) (2448) | ½ | - | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | |
| 2025.10.25 | Round 7: Kobo, Ori - De Jong, Jan-Willem | 7.3 | 2025.10.25 Kobo, Ori (2812320) (2480) | ½ | 92.70% | 1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 | |
| 2025.10.24 | Round 6: De Jong, Jan-Willem - Eggleston, David J | 6.39 | 2025.10.24 Eggleston, David J (412120) (2357) | ½ | 95.00% | 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 | |
| 2025.10.23 | Round 5: Duijn, Richard - De Jong, Jan-Willem | 5.81 | 2025.10.23 Duijn, Richard (1003771) (2179) | ½ | 94.40% | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 | |
| 2025.10.22 | Round 4: Durak, Can - De Jong, Jan-Willem | 4.50 | 2025.10.22 Durak, Can (44552971) (2425) | 0 | 86.20% | 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 | |
| 2025.10.21 | Round 3: De Jong, Jan-Willem - Nogerbek, Kazybek | 3.32 | 2025.10.21 Nogerbek, Kazybek (13710427) (2543) | ½ | 98.20% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | |
| 2025.10.19 | Round 1: De Jong, Jan-Willem - Cordts, Ingo | 1.74 | 2025.10.19 Cordts, Ingo (4662687) (2147) | 0 | 80.80% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2025.10.04 | Round 2: De Jong, Jan-Willem - Baltic, Fatih | 1.10 | 2025.10.04 Baltic, Fatih (12979090) (2276) | 1 | 91.40% | 1. d4 g6 2. c4 Bg7 3. Nc3 d6 | |
| 2025.09.20 | Round 1: Grutter, Tim - De Jong, Jan-Willem | 1.8 | 2025.09.20 Grutter, Tim (1057472) (2392) | ½ | 96.80% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2025.05.13 | Round 9: De Jong, Jan-Willem - Aravindhan, Achyuth | 1.8 | 2025.05.13 Aravindhan, Achyuth (1084216) (2098) | 1 | - | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2025.04.05 | Round 8: Van Meegen, Ruud - De Jong, Jan-Willem | 8.10 | 2025.04.05 Van Meegen, Ruud (1034995) (2320) | 0 | 84.20% | 1. Nf3 d5 2. d4 Nf6 3. g3 c6 | |
| 2025.03.08 | Round 7: De Boer, Eelke - De Jong, Jan-Willem | 1.3 | 2025.03.08 De Boer, Eelke (1048120) (2412) | ½ | 99.30% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2025.02.08 | Round 6: Geirnaert, Steven - De Jong, Jan-Willem | 1.5 | 2025.02.08 Geirnaert, Steven (203866) (2402) | ½ | 97.70% | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 | |
| 2024.12.14 | Round 5: Grutter, Tim - De Jong, Jan-Willem | 5.4 | 2024.12.14 Grutter, Tim (1057472) (2379) | ½ | 97.10% | 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 | |
| 2024.11.23 | KNSB Meesterklasse 2024-2025 | 4.8 | 2024.11.23 Van Roon, Sjoerd (1051075) (2285) | 0 | 86.00% | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 | |
| 2024.11.09 | Round 3: De Jong, Jan-Willem - Piceu, Tom | 3.1 | 2024.11.09 Piceu, Tom (201952) (2323) | 1 | 95.40% | 1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 | |
| 2024.10.26 | Round 7: De Jong, Jan-Willem - Stocek, Jiri | 7.57 | 2024.10.26 Stocek, Jiri (304760) (2501) | 1 | 89.10% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2024.10.24 | 39th European Chess Club Cup | 5 | 2024.10.24 Filipovic, Slobodan J (939633) (2233) | 1 | 95.90% | 1. d4 e6 2. c4 d5 3. Nc3 c5 | |
| 2024.10.23 | 39th European Chess Club Cup | 4 | 2024.10.23 Kjoita, Torgeir (1509870) (2055) | 1 | 97.60% | 1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 | |
| 2024.10.22 | 39th European Chess Club Cup | 3 | 2024.10.22 Uruci, Endrit (22100199) (2343) | 1 | 93.30% | 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 | |
| 2024.10.21 | Round 2: De Jong, Jan-Willem - Mamedyarov, Shakhriyar | 2.20 | 2024.10.21 Mamedyarov, Shakhriyar (13401319) (2733) | 0 | 86.00% | 1. d4 d5 2. c4 e6 3. Nc3 Be7 | |
| 2024.10.20 | 39th European Chess Club Cup | 1 | 2024.10.20 Olsen, William Alexander (1536915) (2145) | 1 | 98.70% | 1. d4 d5 2. c4 e6 3. Nc3 Nf6 | |
| 2024.10.15 | Round 2: Hommerson, Paul - De Jong, Jan-Willem | 1.3 | 2024.10.15 Hommerson, Paul (1025325) (2292) | 1 | 95.40% | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 | |
| 2024.09.21 | Round 1: Van Beek, Lucien - De Jong, Jan-Willem | 1.8 | 2024.09.21 Van Beek, Lucien (1004069) (2341) | ½ | 93.10% | 1. d4 d5 2. c4 c6 3. Nc3 Nf6 | |
| 2023.10.06 | European Chess Club Cup 2023 | 6.58 | 2023.10.06 Ondersteijn, Niels (1011162) (2370) | ½ | 91.20% | 1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 | |
| 2023.10.03 | European Chess Club Cup 2023 | 3.69 | 2023.10.03 Carnicelli, Valerio (856185) (2403) | 0 | 87.70% | 1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 | |
| 2023.10.01 | European Chess Club Cup 2023 | 1.45 | 2023.10.01 Cahen, Alexis (26076918) (2049) | 1 | 94.50% | 1. c4 c5 2. g3 g6 3. Bg2 Bg7 |