Player profile
Posthuma, Joshua
Dossier
71 of 75 games analyzed.
Accuracy: 94%
Opened d4: 19/21Opened e4: 1/21Opened Nf3: 1/21
Castled kingside: 26Same-side castling: 25Did not castle: 12Castled queenside: 5Opposite-side castling: 4
Fianchettoed kingside: 21Played in the center: 16Played on the queenside: 14Played on the kingside: 8Fianchettoed queenside: 8
Active pieces: 31Sacrificed material: 31Backward pawn: 26Initiated exchanges: 26Kept the bishop pair: 23Space advantage: 22Isolated pawn: 19Avoided exchanges: 8Played gambits: 6Missed tactics: 3
Openings
Click "+" to add that group to the games list below. Multiple groups can be added at once.
As White 21 games 8W 8D 4L
Catalan Opening 6 games 2W 3D 1L
(unspecified) 4 games 2W 2D 0L
(unspecified)
4 games
2W
2D
0L
Open Defense 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Queen's Pawn Game 3 games 2W 0D 0L
Accelerated London System 2 games 1W 0D 0L
Steinitz Countergambit
2 games
1W
0D
0L
London System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Indian Defense 2 games 1W 1D 0L
Accelerated London System 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
Queen's Gambit Accepted 2 games 0W 1D 1L
Normal Variation 1 game 0W 0D 1L
Traditional System
1 game
0W
0D
1L
Mannheim Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Horwitz Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Rapport-Jobava System 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Sicilian Defense 1 game 0W 0D 1L
Modern Variations 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Lion Defense 1 game 0W 0D 1L
Lion's Jaw 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Zukertort Opening 1 game 0W 1D 0L
Sicilian Invitation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Pterodactyl Defense 1 game 1W 0D 0L
Eastern 1 game 1W 0D 0L
Rhamphorhynchus
1 game
1W
0D
0L
King's Indian Defense 1 game 1W 0D 0L
Sämisch Variation 1 game 1W 0D 0L
Normal Defense
1 game
1W
0D
0L
Queen's Gambit Declined 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
As Black 23 games 4W 14D 5L
Caro-Kann Defense 6 games 0W 5D 1L
Advance Variation 3 games 0W 2D 1L
Botvinnik-Carls Defense
3 games
0W
2D
1L
Exchange Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Two Knights Attack 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Main Line 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Sicilian Defense 6 games 2W 2D 2L
Nyezhmetdinov-Rossolimo Attack 2 games 1W 0D 1L
(unspecified)
2 games
1W
0D
1L
Hyperaccelerated Dragon 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
O'Kelly Variation 1 game 0W 1D 0L
Venice System
1 game
0W
1D
0L
Accelerated Dragon 1 game 1W 0D 0L
Modern Bc4 Variation
1 game
1W
0D
0L
Löwenthal Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
English Opening 4 games 0W 4D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Anglo-Indian Defense 1 game 0W 1D 0L
Queen's Knight Variation
1 game
0W
1D
0L
Agincourt Defense 1 game 0W 1D 0L
Neo-Catalan Declined
1 game
0W
1D
0L
Symmetrical Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Queen's Gambit Declined 2 games 1W 0D 1L
Exchange Variation 2 games 1W 0D 1L
Positional Variation
2 games
1W
0D
1L
King's Indian Defense 2 games 0W 2D 0L
Normal Variation 2 games 0W 2D 0L
Rare Defenses
2 games
0W
2D
0L
Catalan Opening 1 game 0W 1D 0L
Closed 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Queen's Pawn Game 1 game 1W 0D 0L
Modern Defense 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Semi-Slav Defense 1 game 0W 0D 1L
Stonewall Defense 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Blunders Top 4 of 211
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 75 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.05.24 | 35th Annual Chicago Open | 6.21 | 2026.05.24 Sam, Gabriel (75000776) | ½ | 84.00% | 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ | |
| 2026.05.23 | Round 5: Jacobson, Brandon - Posthuma, Joshua | 5.5 | 2026.05.23 Jacobson, Brandon (30901561) (2594) | 0 | 89.00% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | |
| 2026.05.23 | Round 4: Posthuma, Joshua - Sonis, Francesco | 4.9 | 2026.05.23 Sonis, Francesco (895733) (2556) | ½ | 97.90% | 1. d4 Nf6 2. c4 e6 3. g3 c5 | |
| 2025.11.30 | Round 8: Posthuma, Joshua - Budisavljevic, Luka | 8.21 | 2025.11.30 Budisavljevic, Luka (960047) (2524) | ½ | 91.30% | 1. d4 e6 2. c4 c5 3. d5 exd5 | |
| 2025.11.28 | Round 4: Parkhov, Yair - Posthuma, Joshua | 4.18 | 2025.11.28 Parkhov, Yair (2813408) (2499) | 0 | 85.50% | 1. e4 c6 2. d4 d5 3. e5 c5 | |
| 2025.07.10 | Round 1: Putnam, Liam - Posthuma, Joshua | 1.1 | 2025.07.10 Putnam, Liam (30938279) (2462) | ½ | - | 1. e4 c6 2. d4 d5 3. e5 c5 | |
| 2025.07.07 | Round 9: Matviishen, Viktor - Posthuma, Joshua | 9.1 | 2025.07.07 Matviishen, Viktor (14129850) (2540) | ½ | 97.60% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | |
| 2025.07.07 | Round 8: Posthuma, Joshua - Zeltsan, Joseph | 8.1 | 2025.07.07 Zeltsan, Joseph (30932980) (2379) | 1 | 93.00% | 1. d4 Nf6 2. Bf4 g6 3. Nc3 d5 | |
| 2025.07.07 | Round 7: Griffith, Kyron - Posthuma, Joshua | 7.1 | 2025.07.07 Griffith, Kyron (2046318) (2403) | 0 | 89.60% | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 | |
| 2025.07.07 | Round 6: Posthuma, Joshua - Narayanan, Samrug | 6.1 | 2025.07.07 Narayanan, Samrug (30914051) (2418) | 0 | 88.30% | 1. d4 Nf6 2. c4 e6 3. g3 d5 | |
| 2025.07.07 | Round 5: Tian, Eddy - Posthuma, Joshua | 5.1 | 2025.07.07 Tian, Eddy (30931975) (2413) | ½ | 96.80% | 1. d4 Nf6 2. Nf3 e6 3. c4 d5 | |
| 2025.07.07 | Round 4: Posthuma, Joshua - Cordova, Emilio | 4.1 | 2025.07.07 Cordova, Emilio (3801497) (2513) | 1 | 97.00% | 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ | |
| 2025.07.07 | Round 3: Torres Rosas, Luis Carlos - Posthuma, Joshua | 3.1 | 2025.07.07 Torres Rosas, Luis Carlos (5111080) (2315) | 1 | 97.70% | 1. d4 Nf6 2. c4 e6 3. Nc3 d5 | |
| 2025.07.07 | Round 2: Posthuma, Joshua - Kevlishvili, Robby | 2.1 | 2025.07.07 Kevlishvili, Robby (1040634) (2549) | 0 | 91.70% | 1. e4 c5 2. Nf3 d6 3. Nc3 a6 | |
| 2024.08.20 | Budapest One Week GMA | 9.1 | 2024.08.20 Pap, Misa (921610) (2396) | ½ | 95.40% | 1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 | |
| 2024.08.19 | Budapest One Week GMA | 8.1 | 2024.08.19 Grover, Sahaj (5021103) (2507) | 1 | 94.70% | 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ | |
| 2024.08.18 | Budapest One Week GMA | 7.1 | 2024.08.18 Tyurin, Artem (44130112) (2381) | ½ | 90.30% | 1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 | |
| 2024.08.18 | Budapest One Week GMA | 6.1 | 2024.08.18 Chubakov, Sultan (13803468) (2318) | 1 | 96.30% | 1. d4 d5 2. Bf4 c5 3. e3 e6 | |
| 2024.08.17 | Budapest One Week GMA | 5.1 | 2024.08.17 Setyaki, Azarya Jodi (7101589) (2370) | ½ | 96.00% | 1. e4 c6 2. d4 d5 3. e5 c5 | |
| 2024.08.16 | Budapest One Week GMA | 4.1 | 2024.08.16 Damjanovic, Vuk (980021) (2343) | 0 | 90.60% | 1. d4 d6 2. e4 Nf6 3. f3 c5 | |
| 2024.08.16 | Budapest One Week GMA | 3.1 | 2024.08.16 Gombocz, Ferenc Jr. (775029) (2330) | ½ | 93.30% | 1. c4 b6 2. Nc3 Bb7 3. e4 Nf6 | |
| 2024.08.15 | Budapest One Week GMA | 2.1 | 2024.08.15 Nguyen, Huynh Minh Huy (12401269) (2428) | * | 96.70% | 1. d4 d5 2. Bf4 c5 3. Nc3 e6 | |
| 2024.08.14 | Budapest One Week GMA | 1.1 | 2024.08.14 Fus, Jakub (1193023) (2406) | ½ | 94.60% | 1. c4 Nf6 2. Nc3 b6 3. d4 Bb7 | |
| 2024.06.30 | Round 7: Corrales Jimenez, Fidel - Posthuma, Joshua | 7.4 | 2024.06.30 Corrales Jimenez, Fidel (3506690) (2545) | 0 | 88.30% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 | |
| 2024.03.31 | Round 9: Posthuma, Joshua - Melillo, Lucius | 2024.03.31 Melillo, Lucius (30958245) (2274) | ½ | 97.00% | 1. Nf3 c5 2. b3 Nc6 3. Bb2 Nf6 | ||
| 2024.03.31 | Round 8: Wu, Sibo - Posthuma, Joshua | 2024.03.31 Wu, Sibo (8606048) (2142) | 1 | 92.10% | 1. d4 g6 2. Bf4 Bg7 3. Nc3 c5 | ||
| 2024.03.30 | Round 7: Posthuma, Joshua - Nguyen, James Le | 2024.03.30 Nguyen, James Le (30973163) (2114) | 1 | 89.80% | 1. d4 d5 2. Bf4 c5 3. Nc3 Nf6 | ||
| 2024.03.30 | Round 6: Kunka, Harshid - Posthuma, Joshua | 2024.03.30 Kunka, Harshid (30922216) (2294) | ½ | 93.10% | 1. e4 c5 2. Nf3 a6 3. c3 e6 | ||
| 2024.03.29 | Round 5: Posthuma, Joshua - Horobetz, Graham | 2024.03.29 Horobetz, Graham (2047322) (2252) | 1 | 96.00% | 1. d4 Nf6 2. Bf4 d5 3. e3 c5 | ||
| 2024.03.29 | Round 4: Mendez Tovar, Yessica Yissel - Posthuma, Joshua | 2024.03.29 Mendez Tovar, Yessica Yissel (5113580) (1993) | 1 | 96.80% | 1. e4 c5 2. Nc3 Nc6 3. Nf3 g6 | ||
| 2024.03.28 | Round 3: Posthuma, Joshua - Fierro Baquero, Martha L. | 2024.03.28 Fierro Baquero, Martha L. (3600270) (2283) | 1 | 94.60% | 1. d4 g6 2. e4 Bg7 3. Nc3 c5 | ||
| 2024.03.28 | Round 2: Eckert, Doug - Posthuma, Joshua | 2024.03.28 Eckert, Doug (2001993) (2146) | ½ | 91.50% | 1. c4 Nf6 2. Nf3 e6 3. g3 d5 | ||
| 2024.03.27 | Round 1: Komarov, Dimitri - Posthuma, Joshua | 2024.03.27 Komarov, Dimitri (14101270) (2448) | ½ | 97.00% | 1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 | ||
| Round 9: Posthuma, Joshua - Song, Edward | 9.4 | Song, Edward (2051192) (2395) | * | - | 1. c4 c6 2. d4 d5 3. Nf3 Nf6 | ||
| Round 8: Kantans, Toms - Posthuma, Joshua | 8.1 | Kantans, Toms (11602945) (2515) | 0 | 89.90% | 1. e4 c6 2. d4 d5 3. e5 c5 | ||
| Round 7: Larry Yang - Posthuma, Joshua | 7.5 | Larry Yang | 1 | - | 1. e4 c6 2. d4 d5 3. e5 c5 | ||
| Round 6: Posthuma, Joshua - Panjwani, Raja | 6.4 | Panjwani, Raja (2604493) (2423) | ½ | 98.30% | 1. d4 d6 2. e4 Nf6 3. f3 e5 | ||
| Round 3: Noritsyn, Nikolay - Posthuma, Joshua | 3.4 | Noritsyn, Nikolay (2604922) (2462) | * | - | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 | ||
| 2023.12.21 | Round 8: Aram Hakobyan - Joshua Posthuma | 2023.12.21 Aram Hakobyan (2616) | 0 | 87.70% | 1. d4 Nf6 2. Nf3 e6 3. c4 d5 | ||
| 2023.12.21 | Round 7: Joshua Posthuma - Tran Gia Phuc Pham | 2023.12.21 Tran Gia Phuc Pham (2393) | ½ | 98.10% | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | ||
| 2023.11.06 | Round 9: Jakub Fus - Joshua Posthuma | 2023.11.06 Jakub Fus (2462) | ½ | 98.70% | 1. c4 c5 2. Nf3 g6 3. d4 cxd4 | ||
| 2023.11.06 | Round 8: Joshua Posthuma - Josiah Stearman | 2023.11.06 Josiah Stearman (2451) | 0 | 92.30% | 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 | ||
| 2023.11.05 | Round 7: Luka Budisavljevic - Joshua Posthuma | 2023.11.05 Luka Budisavljevic (2515) | 1 | 97.60% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 | ||
| 2023.11.05 | Round 6: Joshua Posthuma - Ekin Baris Ozenir | 2023.11.05 Ekin Baris Ozenir (2391) | ½ | 99.60% | 1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 | ||
| 2023.11.04 | Round 5: Robby Kevlishvili - Joshua Posthuma | 2023.11.04 Robby Kevlishvili (2535) | ½ | 95.10% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.11.04 | Round 4: Joshua Posthuma - Kostya Kavutskiy | 2023.11.04 Kostya Kavutskiy (2394) | 1 | 94.90% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | ||
| 2023.11.03 | Round 3: Alexander Fishbein - Joshua Posthuma | 2023.11.03 Alexander Fishbein (2382) | ½ | 97.90% | 1. e4 c6 2. d4 d5 3. Nc3 dxe4 | ||
| 2023.11.03 | Round 2: Joshua Posthuma - Bach Ngo | 2023.11.03 Bach Ngo (2367) | ½ | 98.20% | 1. d4 Nf6 2. Bf4 d5 3. e3 e6 | ||
| 2023.11.02 | Round 1: Joshua Posthuma - Mark Heimann | 2023.11.02 Mark Heimann (2440) | ½ | 97.70% | 1. d4 d5 2. c4 e6 3. Nf3 Nf6 | ||
| 2023.08.06 | Round 9: David Brodsky - Joshua Posthuma | 2023.08.06 David Brodsky | ½ | 92.90% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.08.05 | Round 8: Joshua Posthuma - Avi Harrison Kaplan | 2023.08.05 Avi Harrison Kaplan | ½ | 89.10% | 1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.08.04 | Round 7: Joshua Posthuma - Bojanovic Ratko | 2023.08.04 Bojanovic Ratko | 1 | 100.00% | |||
| 2023.08.03 | Round 5: Kostya Kavutskiy - Joshua Posthuma | 2023.08.03 Kostya Kavutskiy | 1 | 97.60% | 1. d4 Nf6 2. Nf3 b6 3. c4 Bb7 | ||
| 2023.08.02 | Round 3: Joshua Posthuma - Dmitry Gurevich | 2023.08.02 Dmitry Gurevich | 0 | 89.20% | 1. d4 d5 2. c4 e6 3. Nf3 a6 | ||
| 2023.08.02 | 2023 US Open Championships | 1 | 2023.08.02 Nicholas Ladan | 1 | 96.50% | 1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 | |
| 2023.06.10 | Round 6: Joshua Posthuma - Lazaro Bruzon Batista | 2023.06.10 Lazaro Bruzon Batista | ½ | 85.30% | 1. d4 Nf6 2. c4 c5 3. d5 g6 | ||
| 2023.06.04 | Round 11: Joshua Posthuma - Victor Matviishen | 2023.06.04 Victor Matviishen | 0 | 85.10% | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 | ||
| 2023.06.04 | Round 3: Lazaro Batista Bruzon - Joshua Posthuma | 2023.06.04 Lazaro Batista Bruzon | 0 | 89.00% | 1. e4 c6 2. Nf3 d5 3. e5 c5 | ||
| 2023.06.03 | Round 2: Joshua Posthuma - Mateusz Bartel | 2023.06.03 Mateusz Bartel | ½ | 84.90% | 1. d4 d5 2. c4 e6 3. g3 dxc4 | ||
| 2023.06.03 | Round 1: Evgeny Bareev - Joshua Posthuma | 2023.06.03 Evgeny Bareev | 1 | 88.40% | 1. d4 Nf6 2. c4 a6 3. Qc2 b5 | ||
| 2023.05.29 | 32nd Annual Chicago Open | 9 | 2023.05.29 Eric Liu | ½ | 84.10% | 1. d4 Nf6 2. c4 d6 3. Nc3 e5 | |
| 2023.05.29 | 32nd Annual Chicago Open | 8 | 2023.05.29 Nicholas Ladan | 1 | 94.80% | 1. d4 Nf6 2. Nf3 b6 3. Bf4 Bb7 | |
| 2023.05.28 | 32nd Annual Chicago Open | 7 | 2023.05.28 Rose Atwell | 1 | 97.50% | 1. d4 d5 2. c4 e6 3. g3 Nf6 | |
| 2023.05.28 | 32nd Annual Chicago Open | 6 | 2023.05.28 Ryan Amburgy | 0 | 93.30% | 1. d4 d5 2. c4 c6 3. Nf3 Nf6 | |
| 2023.05.27 | 32nd Annual Chicago Open | 5 | 2023.05.27 Tanitoluwa Adewumi | ½ | 95.20% | 1. d4 Nf6 2. Nf3 e6 3. g3 d5 | |
| 2023.05.27 | 32nd Annual Chicago Open | 4 | 2023.05.27 Dachey Lin | ½ | 96.70% | 1. c4 c5 2. g3 g6 3. Bg2 Bg7 | |
| 2023.03.17 | Round 9: Anthony Atanasov - Joshua Posthuma | 2023.03.17 Anthony Atanasov | ½ | 95.90% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | ||
| 2023.03.16 | Round 8: Joshua Posthuma - Gabor Nagy | 2023.03.16 Gabor Nagy | 1 | 96.30% | 1. d4 d5 2. c4 e6 3. Nf3 a6 | ||
| 2023.03.16 | Round 7: Mark Plotkin - Joshua Posthuma | 2023.03.16 Mark Plotkin | 1 | 93.30% | 1. e4 c6 2. Nf3 d5 3. d3 Qc7 | ||
| 2023.03.15 | Round 6: Joshua Posthuma - Mike Ivanov | 2023.03.15 Mike Ivanov | ½ | 86.10% | 1. Nf3 Nf6 2. g3 g6 3. b3 d5 | ||
| 2023.03.15 | Round 5: Luis Fernando Ibarra Chami - Joshua Posthuma | 2023.03.15 Luis Fernando Ibarra Chami | ½ | 94.50% | 1. d4 Nf6 2. c4 a6 3. Nc3 c5 | ||
| 2023.03.14 | Round 4: Joshua Posthuma - Zachary Dukic | 2023.03.14 Zachary Dukic | 1 | 95.60% | 1. Nf3 d5 2. g3 Nd7 3. d4 Nb6 | ||
| 2023.03.14 | Round 3: Nikolay Noritsyn - Joshua Posthuma | 2023.03.14 Nikolay Noritsyn | ½ | 92.70% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| 2023.03.13 | Round 2: Joshua Posthuma - Bator Sambuev | 2023.03.13 Bator Sambuev | 1 | 95.10% | 1. d4 Nf6 2. c4 e6 3. g3 d5 | ||
| 2023.03.13 | Round 1: Victor Mikhalevski - Joshua Posthuma | 2023.03.13 Victor Mikhalevski | ½ | 90.40% | 1. d4 Nf6 2. c4 a6 3. e3 e6 |