- 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 |
|---|---|---|---|---|---|---|---|---|---|
| Vigorito, D | 2357 | Posthuma, J | 2355 | 0-1 | 37 | A04 | 2020 | Montreal Winter IM 2020 | |
| A042020Montreal Winter IM 2020 | |||||||||
| Posthuma, J | 2355 | Talukdar, R | 2331 | ½-½ | 47 | D85 | 2020 | Montreal Winter IM 2020 | |
| D852020Montreal Winter IM 2020 | |||||||||
| Williams, J | 2340 | Posthuma, J | 2355 | 1-0 | 55 | A37 | 2020 | Montreal Winter IM 2020 | |
| A372020Montreal Winter IM 2020 | |||||||||
| Posthuma, J | 2355 | Ragnarsson, D | 2400 | 1-0 | 50 | D85 | 2020 | Montreal Winter IM 2020 | |
| D852020Montreal Winter IM 2020 | |||||||||
| Eckert, D | 2139 | Posthuma, J | 2355 | 1-0 | 53 | B38 | 2020 | Montreal Winter IM 2020 | |
| B382020Montreal Winter IM 2020 | |||||||||
| Posthuma, J | 2355 | Rodrigue-Lemieux, S | 2276 | ½-½ | 59 | E06 | 2020 | Montreal Winter IM 2020 | |
| E062020Montreal Winter IM 2020 | |||||||||
| Posthuma, J | 2355 | Duong, T | 2182 | 0-1 | 78 | E04 | 2020 | Montreal Winter IM 2020 | |
| E042020Montreal Winter IM 2020 | |||||||||
| Lund, S | 2340 | Posthuma, J | 2353 | 0-1 | 37 | A58 | 2020 | Elevate My Chess Feb IM | |
| A582020Elevate My Chess Feb IM | |||||||||
| Posthuma, J | 2353 | Clyde, J | 2165 | 1-0 | 30 | A41 | 2020 | Elevate My Chess Feb IM | |
| A412020Elevate My Chess Feb IM | |||||||||
| Vettese, N | 2225 | Posthuma, J | 2353 | 0-1 | 50 | B13 | 2020 | Elevate My Chess Feb IM | |
| B132020Elevate My Chess Feb IM | |||||||||
| Posthuma, J | 2353 | Plotkin, M | 2394 | 0-1 | 66 | A01 | 2020 | Elevate My Chess Feb IM | |
| A012020Elevate My Chess Feb IM | |||||||||
| Hua, E | 2298 | Posthuma, J | 2353 | ½-½ | 71 | B12 | 2020 | Elevate My Chess Feb IM | |
| B122020Elevate My Chess Feb IM | |||||||||
| Posthuma, J | 2353 | Migot, T | 2367 | ½-½ | 32 | E04 | 2020 | Elevate My Chess Feb IM | |
| E042020Elevate My Chess Feb IM | |||||||||
| Liang, J | 2346 | Posthuma, J | 2353 | ½-½ | 166 | A45 | 2020 | Elevate My Chess Feb IM | |
| A452020Elevate My Chess Feb IM | |||||||||
| Posthuma, J | 2353 | Krnan, T | 2420 | ½-½ | 25 | E00 | 2020 | Elevate My Chess Feb IM | |
| E002020Elevate My Chess Feb IM | |||||||||
| Zhou, L | 2307 | Posthuma, J | 2353 | 1-0 | 57 | B16 | 2020 | Elevate My Chess Feb IM | |
| B162020Elevate My Chess Feb IM | |||||||||
| Wang, J | 2293 | Posthuma, J | 2321 | 0-1 | 59 | A58 | 2019 | 8th Washington Int 2019 | |
| A5820198th Washington Int 2019 | |||||||||
| Yu, J | 2341 | Posthuma, J | 2321 | 1-0 | 50 | A21 | 2019 | 8th Washington Int 2019 | |
| A2120198th Washington Int 2019 | |||||||||
| Cordova, E | 2615 | Posthuma, J | 2321 | ½-½ | 11 | A46 | 2019 | 47th Annual World Open | |
| A46201947th Annual World Open | |||||||||
| Quesada Perez, Y | 2626 | Posthuma, J | 2321 | 1-0 | 35 | B12 | 2019 | 47th Annual World Open | |
| B12201947th Annual World Open | |||||||||
| Posthuma, J | 2327 | Eidelman, G | 2128 | 1-0 | 39 | E85 | 2019 | 28th Chicago Open 2019 | |
| E85201928th Chicago Open 2019 | |||||||||
| Hevia Alejano, C | 2471 | Posthuma, J | 2327 | 1-0 | 36 | A21 | 2019 | 28th Chicago Open 2019 | |
| A21201928th Chicago Open 2019 | |||||||||
| Posthuma, J | 2327 | Sheng, J | 2451 | ½-½ | 28 | B06 | 2019 | 28th Chicago Open 2019 | |
| B06201928th Chicago Open 2019 | |||||||||
| Posthuma, J | 2327 | Zhou, A | 1926 | 1-0 | 57 | A50 | 2019 | 28th Chicago Open 2019 | |
| A50201928th Chicago Open 2019 | |||||||||
| Mitkov, N | 2500 | Posthuma, J | 2327 | 1-0 | 59 | B10 | 2019 | 28th Chicago Open 2019 | |
| B10201928th Chicago Open 2019 | |||||||||
| Posthuma, J | 2247 | Moore, N | 2092 | 1-0 | 26 | A57 | 2018 | 27th Chicago Open 2018 | |
| A57201827th Chicago Open 2018 | |||||||||