- Name:
- Joshua Posthuma
- Federation:
United States- Sex:
- Male
- Born:
- 2000
- FIDE ID:
- 2096889 FIDE Profile
- Title:
- International Master
- ELO Classic:
- 2377
- ELO Rapid:
- 2439
- ELO Blitz:
- 2318
- Years:
- 2018 - 2026
- Total Games:
- 186
- Wins:
- 65 (34.95 %)
- Draws:
- 77 (41.4 %)
- Losses:
- 44 (23.66 %)
- Score:
- 55.65 %
Joshua Posthuma
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
|---|---|---|---|
| 35th Chicago Open 2026 | 05/21/2026 | 2352 |
United States |
| US Chess Masters 2025 | 11/26/2025 | 2327 |
United States |
| Royal City Masters 2025 | 08/01/2025 | 2250 | 
Canada |
| Marshall Summer Inv GMA | 07/08/2025 | 2439 |
United States |
Most Played Openings as White
| ECO | Opening | Games |
|---|---|---|
| D30 | Queen's gambit declined | 10 games |
| E04 | Catalan, open, 5.Nf3 | 7 games |
| E00 | Queen's pawn game | 6 games |
| E01 | Catalan, closed | 6 games |
Most Played Openings as Black
| ECO | Opening | Games |
|---|---|---|
| B10 | Caro-Kann defence | 7 games |
| B12 | Caro-Kann defence | 7 games |
| B13 | Caro-Kann, exchange variation | 7 games |
| A47 | Queen's Indian defence | 6 games |
Games played by Joshua Posthuma
| White | Elo | Black | Elo | Result | Moves | ECO | Year | Tournament | Moves |
|---|---|---|---|---|---|---|---|---|---|
| Vanapalli, V | 2259 | Posthuma, J | 2389 | 0-1 | 56 | A10 | 2022 | Charlotte Spring IMC 2022 | |
| A102022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2389 | Canty, J | 2198 | 1-0 | 53 | A86 | 2022 | Charlotte Spring IMC 2022 | |
| A862022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2389 | Adu, O | 2136 | ½-½ | 67 | D30 | 2022 | Charlotte Spring IMC 2022 | |
| D302022Charlotte Spring IMC 2022 | |||||||||
| Andrianov, N | 2330 | Posthuma, J | 2389 | ½-½ | 60 | A47 | 2022 | Charlotte Spring IMC 2022 | |
| A472022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2389 | De La Colina, N | 2181 | 1-0 | 52 | E81 | 2022 | Charlotte Spring IMC 2022 | |
| E812022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2359 | Vazquez, G | 2536 | ½-½ | 19 | D30 | 2022 | CCCSA Winter GMA 2022 | |
| D302022CCCSA Winter GMA 2022 | |||||||||
| Hilby, C | 2434 | Posthuma, J | 2359 | ½-½ | 30 | B12 | 2022 | CCCSA Winter GMA 2022 | |
| B122022CCCSA Winter GMA 2022 | |||||||||
| Stremavicius, T | 2505 | Posthuma, J | 2359 | ½-½ | 64 | B36 | 2022 | CCCSA Winter GMA 2022 | |
| B362022CCCSA Winter GMA 2022 | |||||||||
| Posthuma, J | 2359 | Talukdar, R | 2329 | 1-0 | 26 | A30 | 2022 | CCCSA Winter GMA 2022 | |
| A302022CCCSA Winter GMA 2022 | |||||||||
| Posthuma, J | 2359 | Gauri, S | 2373 | 1-0 | 44 | E04 | 2022 | CCCSA Winter GMA 2022 | |
| E042022CCCSA Winter GMA 2022 | |||||||||
| Zhou, J | 2605 | Posthuma, J | 2359 | 1-0 | 35 | E12 | 2022 | CCCSA Winter GMA 2022 | |
| E122022CCCSA Winter GMA 2022 | |||||||||
| Posthuma, J | 2359 | Mishra, A | 2510 | ½-½ | 51 | D30 | 2022 | CCCSA Winter GMA 2022 | |
| D302022CCCSA Winter GMA 2022 | |||||||||
| Stearman, J | 2404 | Posthuma, J | 2359 | ½-½ | 69 | B12 | 2022 | CCCSA Winter GMA 2022 | |
| B122022CCCSA Winter GMA 2022 | |||||||||
| Vivekananthan, A | 2319 | Posthuma, J | 2359 | ½-½ | 49 | A37 | 2022 | CCCSA Winter GMA 2022 | |
| A372022CCCSA Winter GMA 2022 | |||||||||
| Posthuma, J | 2344 | Paragua, M | 2502 | 1-0 | 33 | D30 | 2021 | 49th Annual World Open | |
| D30202149th Annual World Open | |||||||||
| Posthuma, J | 2344 | Akopian, V | 2625 | ½-½ | 60 | E67 | 2021 | 49th Annual World Open | |
| E67202149th Annual World Open | |||||||||
| Posthuma, J | 2256 | Schmakel, S | 2435 | 1-0 | 34 | E04 | 2021 | National Open 2021 | |
| E042021National Open 2021 | |||||||||
| Matviishen, V | 2512 | Posthuma, J | 2256 | 0-1 | 32 | A50 | 2021 | National Open 2021 | |
| A502021National Open 2021 | |||||||||
| Posthuma, J | 2256 | Khachiyan, M | 2481 | ½-½ | 42 | D11 | 2021 | National Open 2021 | |
| D112021National Open 2021 | |||||||||
| Zierk, S | 2499 | Posthuma, J | 2256 | ½-½ | 31 | B13 | 2021 | National Open 2021 | |
| B132021National Open 2021 | |||||||||
| Posthuma, J | 2256 | Tang, A | 2538 | 0-1 | 36 | E04 | 2021 | National Open 2021 | |
| E042021National Open 2021 | |||||||||
| Vorontsov, P | 2540 | Posthuma, J | 2256 | 0-1 | 44 | A47 | 2021 | National Open 2021 | |
| A472021National Open 2021 | |||||||||
| Posthuma, J | 2256 | Stremavicius, T | 2469 | ½-½ | 30 | A86 | 2021 | National Open 2021 | |
| A862021National Open 2021 | |||||||||
| Colas, J | 2280 | Posthuma, J | 2307 | 1-0 | 47 | B15 | 2021 | CCCSA Charlotte Masters | |
| B152021CCCSA Charlotte Masters | |||||||||
| Posthuma, J | 2307 | Park, E | 2207 | ½-½ | 50 | A86 | 2021 | CCCSA Charlotte Masters | |
| A862021CCCSA Charlotte Masters | |||||||||
| Wang, T | 2307 | Posthuma, J | 2307 | ½-½ | 37 | B13 | 2021 | CCCSA Charlotte Masters | |
| B132021CCCSA Charlotte Masters | |||||||||
| Posthuma, J | 2307 | Chiu, I | 2209 | 1-0 | 58 | A42 | 2021 | CCCSA Charlotte Masters | |
| A422021CCCSA Charlotte Masters | |||||||||
| Posthuma, J | 2307 | Kumar, N | 2158 | 1-0 | 39 | E01 | 2021 | CCCSA Charlotte Masters | |
| E012021CCCSA Charlotte Masters | |||||||||
| Wu, R | 2095 | Posthuma, J | 2307 | 1-0 | 37 | A45 | 2021 | CCCSA Charlotte Masters | |
| A452021CCCSA Charlotte Masters | |||||||||
| Andrianov, N | 2392 | Posthuma, J | 2339 | 1-0 | 52 | A47 | 2020 | CCCSA Thanksgiving IM | |
| A472020CCCSA Thanksgiving IM | |||||||||
| Posthuma, J | 2339 | Arjun, V | 2283 | 0-1 | 33 | D11 | 2020 | CCCSA Thanksgiving IM | |
| D112020CCCSA Thanksgiving IM | |||||||||
| Posthuma, J | 2339 | Li, E | 2311 | ½-½ | 42 | E01 | 2020 | CCCSA Thanksgiving IM | |
| E012020CCCSA Thanksgiving IM | |||||||||
| Shlyakhtenko, R | 2370 | Posthuma, J | 2339 | 1-0 | 46 | A57 | 2020 | CCCSA Thanksgiving IM | |
| A572020CCCSA Thanksgiving IM | |||||||||
| Atanasov, A | 2144 | Posthuma, J | 2339 | 0-1 | 70 | A45 | 2020 | CCCSA Thanksgiving IM | |
| A452020CCCSA Thanksgiving IM | |||||||||
| Posthuma, J | 2339 | Paciorkowski, L | 2194 | 0-1 | 48 | A31 | 2020 | CCCSA Thanksgiving IM | |
| A312020CCCSA Thanksgiving IM | |||||||||
| Kumar, N | 2328 | Posthuma, J | 2339 | 1-0 | 51 | A47 | 2020 | CCCSA Thanksgiving IM | |
| A472020CCCSA Thanksgiving IM | |||||||||
| Posthuma, J | 2339 | Jacobson, A | 2262 | ½-½ | 64 | E01 | 2020 | CCCSA Thanksgiving IM | |
| E012020CCCSA Thanksgiving IM | |||||||||
| Posthuma, J | 2339 | Martin Del Campo Cardenas, R | 2313 | 1-0 | 42 | E84 | 2020 | CCCSA Thanksgiving IM | |
| E842020CCCSA Thanksgiving IM | |||||||||
| Kaufman, R | 2281 | Posthuma, J | 2355 | 0-1 | 36 | A46 | 2020 | Montreal Winter IM 2020 | |
| A462020Montreal Winter IM 2020 | |||||||||
| Posthuma, J | 2355 | Liang, J | 2288 | ½-½ | 82 | E06 | 2020 | Montreal Winter IM 2020 | |
| E062020Montreal Winter IM 2020 | |||||||||