Joshua Posthuma
Country
USA
Birth Year
2000
Gender
M
Title
International Master
FIDE ID
2096889
FIDE Rating
2372
USCF ID
13856778
USCF Rating
2529
FIDE Rating Graph
FIDE supplement history through 2026-10. Ranking lists update separately.
USCF Rating Graph
USCF supplement history through 2026-01. Ranking lists update separately.
Available Games
Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-10-02 (UTC).
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2026-05-24 | 35th Chicago Open 2026 | Chicago USA | 6.21 | Posthuma,Joshua | Sam,Gabriel | 1/2-1/2 | 79 | Open |
| 2 | 2026-05-23 | 35th Chicago Open 2026 | Chicago USA | 5.5 | Jacobson,Brandon | Posthuma,Joshua | 1-0 | 49 | Open |
| 3 | 2026-05-23 | 35th Chicago Open 2026 | Chicago USA | 4.9 | Posthuma,Joshua | Sonis,Francesco | 1/2-1/2 | 32 | Open |
| 4 | 2025-11-30 | US Chess Masters 2025 | Charlotte USA | 8.21 | Joshua Posthuma | Luka Budisavljevic | 1/2-1/2 | 47 | Open |
| 5 | 2025-11-28 | US Chess Masters 2025 | Charlotte USA | 4.18 | Yair Parkhov | Joshua Posthuma | 1-0 | 40 | Open |
| 6 | 2025-08-06 | Royal City Masters 2025 | Guelph CAN | 9.4 | Joshua Posthuma | Edward Song | 1/2-1/2 | 35 | Open |
| 7 | 2025-08-05 | Royal City Masters 2025 | Guelph CAN | 8.1 | Toms Kantans | Joshua Posthuma | 1-0 | 40 | Open |
| 8 | 2025-08-05 | Royal City Masters 2025 | Guelph CAN | 7.5 | Larry Yang | Joshua Posthuma | 0-1 | 40 | Open |
| 9 | 2025-08-04 | Royal City Masters 2025 | Guelph CAN | 6.4 | Joshua Posthuma | Raja Panjwani | 1/2-1/2 | 36 | Open |
| 10 | 2025-08-03 | Royal City Masters 2025 | Guelph CAN | 5.7 | Joshua Posthuma | Luis Manuel Perez Rodriguez | 1-0 | 47 | Open |
| 11 | 2025-08-03 | Royal City Masters 2025 | Guelph CAN | 4.11 | Koosha Jaferian | Joshua Posthuma | 0-1 | 24 | Open |
| 12 | 2025-08-02 | Royal City Masters 2025 | Guelph CAN | 3.4 | Nikolay Noritsyn | Joshua Posthuma | 1-0 | 79 | Open |
| 13 | 2025-08-02 | Royal City Masters 2025 | Guelph CAN | 2.1 | Joshua Posthuma | Jesse Ren | 1-0 | 48 | Open |
| 14 | 2025-07-13 | Marshall Summer Inv GMA | New York USA | 9.1 | Viktor Matviishen | Joshua Posthuma | 1/2-1/2 | 15 | Open |
| 15 | 2025-07-12 | Marshall Summer Inv GMA | New York USA | 8.1 | Joshua Posthuma | Joseph Zeltsan | 1-0 | 31 | Open |
| 16 | 2025-07-12 | Marshall Summer Inv GMA | New York USA | 7.1 | Kyron Griffith | Joshua Posthuma | 1-0 | 49 | Open |
| 17 | 2025-07-11 | Marshall Summer Inv GMA | New York USA | 6.1 | Joshua Posthuma | Samrug Narayanan | 0-1 | 53 | Open |
| 18 | 2025-07-10 | Marshall Summer Inv GMA | New York USA | 5.1 | Eddy Tian | Joshua Posthuma | 1/2-1/2 | 29 | Open |
| 19 | 2025-07-10 | Marshall Summer Inv GMA | New York USA | 4.1 | Joshua Posthuma | Emilio Cordova | 1-0 | 41 | Open |
| 20 | 2025-07-09 | Marshall Summer Inv GMA | New York USA | 3.1 | Luis Carlos Torres Rosas | Joshua Posthuma | 0-1 | 49 | Open |
| 21 | 2025-07-09 | Marshall Summer Inv GMA | New York USA | 2.1 | Joshua Posthuma | Robby Kevlishvili | 0-1 | 59 | Open |
| 22 | 2025-07-08 | Marshall Summer Inv GMA | New York USA | 1.1 | Liam Putnam | Joshua Posthuma | 1/2-1/2 | 27 | Open |
| 23 | 2024-09-14 | FSGM September 2024 | Budapest HUN | 9.3 | Joshua Posthuma | Edoardo Di Benedetto | 1/2-1/2 | 30 | Open |
| 24 | 2024-09-13 | FSGM September 2024 | Budapest HUN | 8.3 | Valeriy Neverov | Joshua Posthuma | 1-0 | 49 | Open |
| 25 | 2024-09-12 | FSGM September 2024 | Budapest HUN | 7.4 | Joshua Posthuma | Marco Dobrikov | 0-1 | 49 | Open |
| 26 | 2024-09-12 | FSGM September 2024 | Budapest HUN | 6.2 | Sai Krishna G V | Joshua Posthuma | 1-0 | 39 | Open |
| 27 | 2024-09-11 | FSGM September 2024 | Budapest HUN | 5.5 | Joshua Posthuma | Lajos Seres | 1-0 | 43 | Open |
| 28 | 2024-09-10 | FSGM September 2024 | Budapest HUN | 4.1 | Khamparia Akshat | Joshua Posthuma | 1-0 | 72 | Open |
| 29 | 2024-09-09 | FSGM September 2024 | Budapest HUN | 3.5 | Emin Ohanyan | Joshua Posthuma | 1/2-1/2 | 59 | Open |
| 30 | 2024-09-08 | FSGM September 2024 | Budapest HUN | 2.2 | Joshua Posthuma | Sathvik Adiga | 1/2-1/2 | 74 | Open |
| 31 | 2024-09-07 | FSGM September 2024 | Budapest HUN | 1.4 | Selim Citak | Joshua Posthuma | 1/2-1/2 | 77 | Open |
| 32 | 2024-09-05 | Vezerkepzo GM Kluger Mem | Budapest HUN | 9.2 | Adithya A Chullikkad | Joshua Posthuma | 0-1 | 21 | Open |
| 33 | 2024-09-04 | Vezerkepzo GM Kluger Mem | Budapest HUN | 8.5 | Joshua Posthuma | Sai Krishna G V | 1/2-1/2 | 77 | Open |
| 34 | 2024-09-03 | Vezerkepzo GM Kluger Mem | Budapest HUN | 7.1 | Joshua Posthuma | Felix Xie | 1-0 | 54 | Open |
| 35 | 2024-09-02 | Vezerkepzo GM Kluger Mem | Budapest HUN | 6.5 | Tamas Jr. Fodor | Joshua Posthuma | 1-0 | 34 | Open |
| 36 | 2024-09-01 | Vezerkepzo GM Kluger Mem | Budapest HUN | 5.2 | Joshua Posthuma | Sathvik Adiga | 0-1 | 66 | Open |
| 37 | 2024-08-30 | Vezerkepzo GM Kluger Mem | Budapest HUN | 4.4 | Endre Csiki | Joshua Posthuma | 1-0 | 51 | Open |
| 38 | 2024-08-30 | Vezerkepzo GM Kluger Mem | Budapest HUN | 3.3 | Joshua Posthuma | Roberto Garcia Pantoja | 1-0 | 54 | Open |
| 39 | 2024-08-29 | Vezerkepzo GM Kluger Mem | Budapest HUN | 2.3 | Jose Gabriel Cardoso Cardoso | Joshua Posthuma | 1-0 | 49 | Open |
| 40 | 2024-08-28 | Vezerkepzo GM Kluger Mem | Budapest HUN | 1.4 | Joshua Posthuma | Levente Papp | 1/2-1/2 | 52 | Open |
| 41 | 2024-08-20 | Budapest 1 Week Aug GMA | Budapest HUN | 9.1 | Misa Pap | Joshua Posthuma | 1/2-1/2 | 80 | Open |
| 42 | 2024-08-19 | Budapest 1 Week Aug GMA | Budapest HUN | 8.1 | Joshua Posthuma | Sahaj Grover | 1-0 | 40 | Open |
| 43 | 2024-08-18 | Budapest 1 Week Aug GMA | Budapest HUN | 7.1 | Artem Tyurin | Joshua Posthuma | 1/2-1/2 | 64 | Open |
| 44 | 2024-08-18 | Budapest 1 Week Aug GMA | Budapest HUN | 6.1 | Joshua Posthuma | Sultan Chubakov | 1-0 | 29 | Open |
| 45 | 2024-08-17 | Budapest 1 Week Aug GMA | Budapest HUN | 5.1 | Azarya Jodi Setyaki | Joshua Posthuma | 1/2-1/2 | 74 | Open |
| 46 | 2024-08-16 | Budapest 1 Week Aug GMA | Budapest HUN | 4.1 | Joshua Posthuma | Vuk Damjanovic | 0-1 | 47 | Open |
| 47 | 2024-08-16 | Budapest 1 Week Aug GMA | Budapest HUN | 3.1 | Ferenc Jr. Gombocz | Joshua Posthuma | 1/2-1/2 | 64 | Open |
| 48 | 2024-08-15 | Budapest 1 Week Aug GMA | Budapest HUN | 2.1 | Joshua Posthuma | Huynh Minh Huy Nguyen | 0-1 | 44 | Open |
| 49 | 2024-08-14 | Budapest 1 Week Aug GMA | Budapest HUN | 1.1 | Jakub Fus | Joshua Posthuma | 1/2-1/2 | 59 | Open |
| 50 | 2024-06-30 | 17th Philadelphia Int | Philadelphia USA | 7.4 | Fidel Corrales Jimenez | Joshua Posthuma | 1-0 | 59 | Open |
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