- 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 | 2378 | Sam, G | 2214 | ½-½ | 79 | E00 | 2026 | 35th Chicago Open 2026 | |
| E00202635th Chicago Open 2026 | |||||||||
| Posthuma, J | 2378 | Sonis, F | 2556 | ½-½ | 32 | E00 | 2026 | 35th Chicago Open 2026 | |
| E00202635th Chicago Open 2026 | |||||||||
| Jacobson, B | 2594 | Posthuma, J | 2378 | 1-0 | 49 | D35 | 2026 | 35th Chicago Open 2026 | |
| D35202635th Chicago Open 2026 | |||||||||
| Posthuma, J | 2390 | Budisavljevic, L | 2524 | ½-½ | 47 | A40 | 2025 | US Chess Masters 2025 | |
| A402025US Chess Masters 2025 | |||||||||
| Parkhov, Y | 2499 | Posthuma, J | 2390 | 1-0 | 40 | C02 | 2025 | US Chess Masters 2025 | |
| C022025US Chess Masters 2025 | |||||||||
| Posthuma, J | 2380 | Song, E | 2395 | ½-½ | 35 | D11 | 2025 | Royal City Masters 2025 | |
| D112025Royal City Masters 2025 | |||||||||
| Yang, L | 2108 | Posthuma, J | 2380 | 0-1 | 40 | C02 | 2025 | Royal City Masters 2025 | |
| C022025Royal City Masters 2025 | |||||||||
| Kantans, T | 2515 | Posthuma, J | 2380 | 1-0 | 40 | C02 | 2025 | Royal City Masters 2025 | |
| C022025Royal City Masters 2025 | |||||||||
| Posthuma, J | 2380 | Panjwani, R | 2423 | ½-½ | 36 | A41 | 2025 | Royal City Masters 2025 | |
| A412025Royal City Masters 2025 | |||||||||
| Jaferian, K | 2285 | Posthuma, J | 2380 | 0-1 | 24 | B10 | 2025 | Royal City Masters 2025 | |
| B102025Royal City Masters 2025 | |||||||||
| Posthuma, J | 2380 | Perez Rodriguez, L | 2318 | 1-0 | 47 | D30 | 2025 | Royal City Masters 2025 | |
| D302025Royal City Masters 2025 | |||||||||
| Posthuma, J | 2380 | Ren, J | 2114 | 1-0 | 48 | A45 | 2025 | Royal City Masters 2025 | |
| A452025Royal City Masters 2025 | |||||||||
| Noritsyn, N | 2462 | Posthuma, J | 2380 | 1-0 | 79 | B27 | 2025 | Royal City Masters 2025 | |
| B272025Royal City Masters 2025 | |||||||||
| Matviishen, V | 2540 | Posthuma, J | 2392 | ½-½ | 15 | B13 | 2025 | Marshall Summer Inv GMA | |
| B132025Marshall Summer Inv GMA | |||||||||
| Griffith, K | 2403 | Posthuma, J | 2392 | 1-0 | 49 | B27 | 2025 | Marshall Summer Inv GMA | |
| B272025Marshall Summer Inv GMA | |||||||||
| Posthuma, J | 2392 | Zeltsan, J | 2379 | 1-0 | 31 | A45 | 2025 | Marshall Summer Inv GMA | |
| A452025Marshall Summer Inv GMA | |||||||||
| Posthuma, J | 2392 | Narayanan, S | 2418 | 0-1 | 53 | E01 | 2025 | Marshall Summer Inv GMA | |
| E012025Marshall Summer Inv GMA | |||||||||
| Tian, E | 2413 | Posthuma, J | 2392 | ½-½ | 29 | E06 | 2025 | Marshall Summer Inv GMA | |
| E062025Marshall Summer Inv GMA | |||||||||
| Posthuma, J | 2392 | Cordova, E | 2513 | 1-0 | 41 | E00 | 2025 | Marshall Summer Inv GMA | |
| E002025Marshall Summer Inv GMA | |||||||||
| Torres Rosas, L | 2315 | Posthuma, J | 2392 | 0-1 | 49 | D35 | 2025 | Marshall Summer Inv GMA | |
| D352025Marshall Summer Inv GMA | |||||||||
| Posthuma, J | 2392 | Kevlishvili, R | 2549 | 0-1 | 59 | B50 | 2025 | Marshall Summer Inv GMA | |
| B502025Marshall Summer Inv GMA | |||||||||
| Putnam, L | 2462 | Posthuma, J | 2392 | ½-½ | 27 | B12 | 2025 | Marshall Summer Inv GMA | |
| B122025Marshall Summer Inv GMA | |||||||||
| Posthuma, J | 2392 | Kevlishvili, R | 2549 | 0-1 | 2025 | 53rd Annual World Open | |||
| 202553rd Annual World Open | |||||||||
| Posthuma, J | 2409 | Di Benedetto, E | 2401 | ½-½ | 30 | A13 | 2024 | FSGM September 2024 | |
| A132024FSGM September 2024 | |||||||||
| Neverov, V | 2412 | Posthuma, J | 2409 | 1-0 | 49 | D37 | 2024 | FSGM September 2024 | |
| D372024FSGM September 2024 | |||||||||
| Posthuma, J | 2409 | Dobrikov, M | 2369 | 0-1 | 49 | E98 | 2024 | FSGM September 2024 | |
| E982024FSGM September 2024 | |||||||||
| Sai, K | 2402 | Posthuma, J | 2409 | 1-0 | 39 | B15 | 2024 | FSGM September 2024 | |
| B152024FSGM September 2024 | |||||||||
| Posthuma, J | 2409 | Seres, L | 2324 | 1-0 | 43 | E00 | 2024 | FSGM September 2024 | |
| E002024FSGM September 2024 | |||||||||
| Akshat, K | 2371 | Posthuma, J | 2409 | 1-0 | 72 | A52 | 2024 | FSGM September 2024 | |
| A522024FSGM September 2024 | |||||||||
| Ohanyan, E | 2514 | Posthuma, J | 2409 | ½-½ | 59 | C02 | 2024 | FSGM September 2024 | |
| C022024FSGM September 2024 | |||||||||
| Posthuma, J | 2409 | Sathvik Adiga, | 2378 | ½-½ | 74 | D02 | 2024 | FSGM September 2024 | |
| D022024FSGM September 2024 | |||||||||
| Citak, S | 2416 | Posthuma, J | 2409 | ½-½ | 77 | A50 | 2024 | FSGM September 2024 | |
| A502024FSGM September 2024 | |||||||||
| Adithya A Chullikkad, | 2144 | Posthuma, J | 2409 | 0-1 | 21 | B28 | 2024 | Vezerkepzo GM Kluger Mem | |
| B282024Vezerkepzo GM Kluger Mem | |||||||||
| Posthuma, J | 2409 | Sai, K | 2402 | ½-½ | 77 | E95 | 2024 | Vezerkepzo GM Kluger Mem | |
| E952024Vezerkepzo GM Kluger Mem | |||||||||
| Posthuma, J | 2409 | Xie, F | 2320 | 1-0 | 54 | A37 | 2024 | Vezerkepzo GM Kluger Mem | |
| A372024Vezerkepzo GM Kluger Mem | |||||||||
| Fodor, T | 2513 | Posthuma, J | 2409 | 1-0 | 34 | A52 | 2024 | Vezerkepzo GM Kluger Mem | |
| A522024Vezerkepzo GM Kluger Mem | |||||||||
| Posthuma, J | 2409 | Sathvik Adiga, | 2378 | 0-1 | 66 | D02 | 2024 | Vezerkepzo GM Kluger Mem | |
| D022024Vezerkepzo GM Kluger Mem | |||||||||
| Csiki, E | 2280 | Posthuma, J | 2409 | 1-0 | 51 | A45 | 2024 | Vezerkepzo GM Kluger Mem | |
| A452024Vezerkepzo GM Kluger Mem | |||||||||
| Posthuma, J | 2409 | Garcia Pantoja, R | 2550 | 1-0 | 54 | D11 | 2024 | Vezerkepzo GM Kluger Mem | |
| D112024Vezerkepzo GM Kluger Mem | |||||||||
| Cardoso Cardoso, J | 2508 | Posthuma, J | 2409 | 1-0 | 49 | B32 | 2024 | Vezerkepzo GM Kluger Mem | |
| B322024Vezerkepzo GM Kluger Mem | |||||||||