- 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 |
|---|---|---|---|---|---|---|---|---|---|
| Posthuma, J | 2457 | Hua, E | 2275 | 1-0 | 32 | E06 | 2023 | CAN Transnational Classic | |
| E062023CAN Transnational Classic | |||||||||
| Matviishen, V | 2538 | Posthuma, J | 2457 | 1-0 | 28 | B30 | 2023 | CAN Transnational Classic | |
| B302023CAN Transnational Classic | |||||||||
| Posthuma, J | 2457 | Almeida Quintana, O | 2520 | ½-½ | 50 | A41 | 2023 | CAN Transnational Classic | |
| A412023CAN Transnational Classic | |||||||||
| Golubeva, O | 2179 | Posthuma, J | 2457 | 0-1 | 77 | A04 | 2023 | CAN Transnational Classic | |
| A042023CAN Transnational Classic | |||||||||
| Posthuma, J | 2457 | Liu, E | 2299 | ½-½ | 78 | A55 | 2023 | 32nd Chicago Open 2023 | |
| A55202332nd Chicago Open 2023 | |||||||||
| Ladan, N | 2228 | Posthuma, J | 2457 | 0-1 | 24 | A47 | 2023 | 32nd Chicago Open 2023 | |
| A47202332nd Chicago Open 2023 | |||||||||
| Amburgy, R | 2246 | Posthuma, J | 2457 | 1-0 | 53 | D15 | 2023 | 32nd Chicago Open 2023 | |
| D15202332nd Chicago Open 2023 | |||||||||
| Posthuma, J | 2457 | Atwell, R | 2108 | 1-0 | 41 | E01 | 2023 | 32nd Chicago Open 2023 | |
| E01202332nd Chicago Open 2023 | |||||||||
| Lin, D | 2299 | Posthuma, J | 2457 | ½-½ | 69 | A36 | 2023 | 32nd Chicago Open 2023 | |
| A36202332nd Chicago Open 2023 | |||||||||
| Posthuma, J | 2457 | Adewumi, T | 2283 | ½-½ | 55 | A46 | 2023 | 32nd Chicago Open 2023 | |
| A46202332nd Chicago Open 2023 | |||||||||
| Atanasov, A | 2361 | Posthuma, J | 2441 | ½-½ | 65 | B13 | 2023 | Excelsior March GM 2023 | |
| B132023Excelsior March GM 2023 | |||||||||
| Posthuma, J | 2441 | Nagy, G | 2497 | 1-0 | 43 | D30 | 2023 | Excelsior March GM 2023 | |
| D302023Excelsior March GM 2023 | |||||||||
| Plotkin, M | 2365 | Posthuma, J | 2441 | 0-1 | 26 | B10 | 2023 | Excelsior March GM 2023 | |
| B102023Excelsior March GM 2023 | |||||||||
| Posthuma, J | 2441 | Ivanov, M | 2299 | ½-½ | 50 | A05 | 2023 | Excelsior March GM 2023 | |
| A052023Excelsior March GM 2023 | |||||||||
| Ibarra Chami, L | 2447 | Posthuma, J | 2441 | ½-½ | 38 | A50 | 2023 | Excelsior March GM 2023 | |
| A502023Excelsior March GM 2023 | |||||||||
| Noritsyn, N | 2460 | Posthuma, J | 2441 | ½-½ | 54 | B31 | 2023 | Excelsior March GM 2023 | |
| B312023Excelsior March GM 2023 | |||||||||
| Posthuma, J | 2441 | Dukic, Z | 2238 | 1-0 | 43 | A07 | 2023 | Excelsior March GM 2023 | |
| A072023Excelsior March GM 2023 | |||||||||
| Mikhalevski, V | 2519 | Posthuma, J | 2441 | ½-½ | 62 | A50 | 2023 | Excelsior March GM 2023 | |
| A502023Excelsior March GM 2023 | |||||||||
| Posthuma, J | 2441 | Sambuev, B | 2434 | 1-0 | 65 | E01 | 2023 | Excelsior March GM 2023 | |
| E012023Excelsior March GM 2023 | |||||||||
| Posthuma, J | 2405 | Abrahamyan, T | 2297 | 1-0 | 38 | E04 | 2022 | 31st Chicago Open 2022 | |
| E04202231st Chicago Open 2022 | |||||||||
| Posthuma, J | 2405 | Antipov, M | 2592 | ½-½ | 16 | A05 | 2022 | 31st Chicago Open 2022 | |
| A05202231st Chicago Open 2022 | |||||||||
| Shen, C | 2295 | Posthuma, J | 2405 | ½-½ | 43 | A47 | 2022 | 31st Chicago Open 2022 | |
| A47202231st Chicago Open 2022 | |||||||||
| Posthuma, J | 2405 | Cordova, E | 2549 | 0-1 | 37 | A31 | 2022 | 31st Chicago Open 2022 | |
| A31202231st Chicago Open 2022 | |||||||||
| Posthuma, J | 2405 | Adewumi, T | 2305 | ½-½ | 94 | D11 | 2022 | 31st Chicago Open 2022 | |
| D11202231st Chicago Open 2022 | |||||||||
| Canty, J | 2225 | Posthuma, J | 2405 | 0-1 | 35 | B13 | 2022 | 31st Chicago Open 2022 | |
| B13202231st Chicago Open 2022 | |||||||||
| Posthuma, J | 2405 | Chen, R | 2265 | 1-0 | 42 | A05 | 2022 | 31st Chicago Open 2022 | |
| A05202231st Chicago Open 2022 | |||||||||
| Gareyev, T | 2565 | Posthuma, J | 2405 | 1-0 | 30 | A45 | 2022 | 31st Chicago Open 2022 | |
| A45202231st Chicago Open 2022 | |||||||||
| Grabinsky, A | 2401 | Posthuma, J | 2405 | ½-½ | 68 | B10 | 2022 | Saint Louis Congress IM | |
| B102022Saint Louis Congress IM | |||||||||
| Posthuma, J | 2405 | Antova, G | 2293 | 1-0 | 41 | D30 | 2022 | Saint Louis Congress IM | |
| D302022Saint Louis Congress IM | |||||||||
| Marek, M | 2363 | Posthuma, J | 2405 | ½-½ | 4 | B13 | 2022 | Saint Louis Congress IM | |
| B132022Saint Louis Congress IM | |||||||||
| Posthuma, J | 2405 | Ezra Paul Chambers, | 2232 | 1-0 | 62 | D30 | 2022 | Saint Louis Congress IM | |
| D302022Saint Louis Congress IM | |||||||||
| Yu, J | 2257 | Posthuma, J | 2405 | 0-1 | 39 | A50 | 2022 | Saint Louis Congress IM | |
| A502022Saint Louis Congress IM | |||||||||
| Posthuma, J | 2405 | Rodriguez Rivera, P | 2197 | 1-0 | 52 | A05 | 2022 | Saint Louis Congress IM | |
| A052022Saint Louis Congress IM | |||||||||
| Posthuma, J | 2405 | Proleiko, J | 2204 | 1-0 | 54 | A05 | 2022 | Saint Louis Congress IM | |
| A052022Saint Louis Congress IM | |||||||||
| Lee, A | 2344 | Posthuma, J | 2405 | ½-½ | 91 | A50 | 2022 | Saint Louis Congress IM | |
| A502022Saint Louis Congress IM | |||||||||
| Tokhirjonova, G | 2337 | Posthuma, J | 2405 | ½-½ | 57 | B30 | 2022 | Saint Louis Congress IM | |
| B302022Saint Louis Congress IM | |||||||||
| Ivanov, M | 2339 | Posthuma, J | 2389 | 0-1 | 56 | B10 | 2022 | Charlotte Spring IMC 2022 | |
| B102022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2389 | Yan, R | 2284 | ½-½ | 13 | E06 | 2022 | Charlotte Spring IMC 2022 | |
| E062022Charlotte Spring IMC 2022 | |||||||||
| Hardaway, B | 2199 | Posthuma, J | 2389 | 0-1 | 45 | B12 | 2022 | Charlotte Spring IMC 2022 | |
| B122022Charlotte Spring IMC 2022 | |||||||||
| Posthuma, J | 2389 | Martin Del Campo Cardenas, R | 2257 | ½-½ | 70 | A54 | 2022 | Charlotte Spring IMC 2022 | |
| A542022Charlotte Spring IMC 2022 | |||||||||