Player profile
Boer, Stefan
Dossier
19 of 20 games analyzed.
Accuracy: 88.1%
Opened d4: 5/9Opened Nf3: 4/9
Castled kingside: 15Same-side castling: 12Opposite-side castling: 4Castled queenside: 3Did not castle: 1
Played in the center: 7Fianchettoed kingside: 6Played on the queenside: 4Played on the kingside: 3Fianchettoed queenside: 2
Initiated exchanges: 14Backward pawn: 12Kept the bishop pair: 11Active pieces: 11Sacrificed material: 9Space advantage: 9Missed tactics: 7Isolated pawn: 4Avoided exchanges: 4
Openings
Click "+" to add that group to the games list below. Multiple groups can be added at once.
As White 9 games 2W 3D 4L
Zukertort Opening 3 games 1W 1D 1L
(unspecified) 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Sicilian Invitation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Benoni Defense 1 game 0W 0D 1L
Benoni-Indian Defense 1 game 0W 0D 1L
Kingside Move Order
1 game
0W
0D
1L
King's Indian Defense 1 game 0W 0D 1L
Fianchetto Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Dutch Defense 1 game 0W 1D 0L
Korchnoi Attack 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Queen's Gambit Accepted 1 game 0W 1D 0L
Accelerated Mannheim Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Queen's Pawn Game 1 game 0W 0D 1L
Modern Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Bogo-Indian Defense 1 game 1W 0D 0L
Retreat Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
As Black 11 games 3W 2D 6L
Caro-Kann Defense 3 games 0W 1D 2L
Classical Variation 1 game 0W 0D 1L
Main Line
1 game
0W
0D
1L
Two Knights Attack 1 game 0W 1D 0L
Mindeno Variation
1 game
0W
1D
0L
Breyer Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Philidor Defense 2 games 1W 0D 1L
Exchange Variation 2 games 1W 0D 1L
(unspecified)
2 games
1W
0D
1L
Queen's Pawn Game 2 games 1W 0D 1L
Mason Attack 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Accelerated London System 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Hungarian Opening 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Zukertort Opening 1 game 1W 0D 0L
Pirc Invitation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
King's Pawn Game 1 game 0W 0D 1L
Maróczy Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
French Defense 1 game 0W 0D 1L
Tarrasch Variation 1 game 0W 0D 1L
Open System
1 game
0W
0D
1L
Blunders Top 4 of 103
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 20 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.06.10 | Round 9: Gigliotti, Vitaliano - Boer, Stefan | 9.50 | 2026.06.10 Gigliotti, Vitaliano (2809880) (1676) | ½ | 85.20% | 1. g3 e5 2. Bg2 d5 3. d4 e4 | |
| 2026.06.09 | Round 8: Boer, Stefan - Nagy, Laszlo | 8.40 | 2026.06.09 Nagy, Laszlo (24618470) (1924) | 0 | 87.70% | 1. d4 Nf6 2. Nf3 c5 3. d5 d6 | |
| 2026.06.08 | Round 7: Galano, Saverio - Boer, Stefan | 7.50 | 2026.06.08 Galano, Saverio (2896678) (1588) | 1 | 96.30% | 1. Nf3 d6 2. c4 e5 3. d3 Be7 | |
| 2026.06.07 | Round 6: Boer, Stefan - Brongers, Henk | 6.38 | 2026.06.07 Brongers, Henk (1021303) (1999) | 0 | 86.80% | 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 | |
| 2026.06.06 | Round 5: Ventura, Sergio - Boer, Stefan | 5.34 | 2026.06.06 Ventura, Sergio (805823) (1986) | 0 | 82.40% | 1. e4 d6 2. d4 e5 3. Nf3 exd4 | |
| 2026.06.05 | Round 4: Boer, Stefan - Ghysels, Marc | 4.33 | 2026.06.05 Ghysels, Marc (204595) (1975) | ½ | 86.10% | 1. d4 f5 2. h3 d5 3. Nf3 Nf6 | |
| 2026.06.04 | Round 3: Galeone, Antonio Bonaventura - Boer, Stefan | 3.52 | 2026.06.04 Galeone, Antonio Bonaventura (23465182) (1552) | 1 | 83.70% | 1. e4 d6 2. d4 e5 3. Nf3 exd4 | |
| 2026.06.03 | Round 2: Boer, Stefan - Olivier, Pierre | 2.36 | 2026.06.03 Olivier, Pierre (601829) (2087) | ½ | 88.90% | 1. d4 d5 2. c4 dxc4 3. Qa4+ c6 | |
| 2026.06.02 | Round 1: Kierzek, Matthias, Dr. - Boer, Stefan | 1.28 | 2026.06.02 Kierzek, Matthias, Dr. (4647009) (2094) | 0 | - | 1. d4 d6 2. e4 e5 3. dxe5 dxe5 | |
| 2025.11.01 | Round 11: Candela, Leo-Thierry - Boer, Stefan | 11.66 | 2025.11.01 Candela, Leo-Thierry (665320) (1669) | 1 | 96.70% | 1. d4 d5 2. f4 e6 3. Nf3 c5 | |
| 2025.10.31 | Round 10: Boer, Stefan - Marino, Oscar | 10.66 | 2025.10.31 Marino, Oscar (844349) (1763) | 0 | 83.10% | 1. d4 g6 2. Nf3 Bg7 3. g3 b6 | |
| 2025.10.30 | Round 9: Vilarnovo Caamano, Jose - Boer, Stefan | 9.59 | 2025.10.30 Vilarnovo Caamano, Jose (2216590) (1949) | 0 | 80.40% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2025.10.29 | Round 8: Boer, Stefan - Serafim Junior, Arnor | 8.67 | 2025.10.29 Serafim Junior, Arnor (2130750) (1799) | 1 | 89.90% | 1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 | |
| 2025.10.28 | Round 7: Wegemund, Hubert - Boer, Stefan | 7.59 | 2025.10.28 Wegemund, Hubert (4693892) (2013) | 0 | 87.00% | 1. e4 c6 2. d4 d5 3. Nc3 dxe4 | |
| 2025.10.26 | Round 6: Boer, Stefan - Colangeli, Claudio | 6.70 | 2025.10.26 Colangeli, Claudio (23415762) (1580) | 1 | 98.60% | 1. Nf3 d5 2. d4 Nf6 3. c4 e6 | |
| 2025.10.25 | Round 5: Brionne, Thierry - Boer, Stefan | 5.64 | 2025.10.25 Brionne, Thierry (606642) (1950) | 0 | 77.60% | 1. d4 d5 2. Bf4 Nf6 3. e3 e6 | |
| 2025.10.24 | Round 4: Boer, Stefan - Schmahl, Stephan | 4.62 | 2025.10.24 Schmahl, Stephan (4660498) (1973) | 0 | 88.60% | 1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 | |
| 2025.10.23 | Round 3: Mendez, Alejandro Ariel - Boer, Stefan | 3.60 | 2025.10.23 Mendez, Alejandro Ariel (178519) (1984) | ½ | 92.20% | 1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 | |
| 2025.10.22 | Round 2: Boer, Stefan - Wollenweber, Carsten | 2.58 | 2025.10.22 Wollenweber, Carsten (4659724) (2018) | ½ | 96.70% | 1. Nf3 Nf6 2. g3 d6 3. Bg2 e5 | |
| 2025.10.21 | Round 1: Betaneli, Alexander - Boer, Stefan | 1.53 | 2025.10.21 Betaneli, Alexander (2012359) (2164) | 0 | 86.30% | 1. e4 c6 2. d3 d5 3. Nd2 e5 |