FMKoosha Jaferian
CAN Born 1998 Male
- FIDE ID
- 12507440
About Koosha Jaferian
Koosha Jaferian learned chess from his father at four. In Iran he twice won the Fajr under-ten championship and finished second in the national under-eight event. After moving to Canadian competition, he won the Ottawa championship in 2021. Show more
Koosha Jaferian learned chess from his father at four. In Iran he twice won the Fajr under-ten championship and finished second in the national under-eight event. After moving to Canadian competition, he won the Ottawa championship in 2021. He finished second at the 2022 Ontario Open and also placed second in the Canadian Open blitz. A Candidate Master, he played for the University of Toronto while completing a master's degree in computer science. He has also given lectures and simultaneous exhibitions at Hart House.
FIDE ratings
Rapid
2157Published FIDE
Blitz
2296Published FIDE
Official classical ranks
- World rank
- #5537
- National rank · CAN
- #42
Active players · Nov 2026 FIDE list ⓘ
Rating milestones
- Highest recorded rating
- 2295 Sep 2026
- Recorded years
- 2007–2026
- Archived games
- 187
Based on available monthly lists and saved games.
Rating history
CFC ratings
Canadian rankingsCFC ID 174318 · Toronto ON
2438Regular
2417Quick
CFC rating history
Official CFC ratings after each rated event.
Rated events
| Date | Event | Type | Rating |
|---|---|---|---|
| 2026-10-23 | Fallsview Qualifier 3 | Quick | 2417 |
| 2026-10-12 | Chess4win Thanksgiving Open O2100 | Regular | 2438 |
| 2026-08-13 | Niagara Fallsview Qualifier 1 | Quick | 2415 |
| 2026-07-17 | 2026 Canadian Open O2100 | Regular | 2466 |
| 2026-06-29 | 2026 Toronto Blitz | Quick | 2402 |
| 2026-06-07 | 2026 EOOCC Open | Regular | 2406 |
| 2026-05-18 | 2026 Ontario Open - Crown | Regular | 2416 |
| 2026-04-07 | Championnat d'échecs du Canada | Regular | 2418 |
| 2026-03-01 | 2026 Ottawa March Open | Regular | 2415 |
| 2026-02-24 | Greater Toronto Chess League 2026 | Regular | 2415 |
| 2026-02-16 | Hart House Reading Week Crown | Regular | 2407 |
| 2026-01-04 | New Year Open Blitz 2026 | Quick | 2355 |
| 2025-12-21 | Hart House Holidays Open Crown | Regular | 2374 |
| 2025-12-01 | 2025 GTCL Cup | Quick | 2363 |
| 2025-11-10 | ACC Ted Winick Memorial Crown | Regular | 2365 |
| 2025-10-26 | 2025 Hart House CC Championship | Regular | 2369 |
| 2025-10-13 | Silent Storm Thanksgiving Open | Regular | 2382 |
| 2025-09-22 | ACC Hot Heads Crown | Regular | 2420 |
| 2025-09-01 | 2025 Toronto Open Crown | Regular | 2418 |
| 2025-08-10 | Canadian Intergenerational Blitz | Quick | 2370 |
| 2025-08-06 | 2025 Royal City Masters Crown | Regular | 2440 |
| 2025-06-15 | 2025 Eastern ON Open | Regular | 2456 |
| 2025-06-01 | 3rd Blitz Bishops Knockout | Quick | 2369 |
| 2025-05-31 | BBKO 3rd - Qualification | Quick | 2357 |
| 2025-05-19 | 2025 Ontario Open Over 2000 | Regular | 2459 |
| 2025-04-22 | 2025 Canadian Closed | Regular | 2467 |
| 2025-04-20 | 2025 Easter Blitz Blitz de Paques | Quick | 2349 |
| 2025-04-10 | SCC FIDE Rated Winter Swiss | Regular | 2480 |
| 2025-04-07 | Annex Chess Club 2025 Championship | Regular | 2480 |
| 2025-03-30 | AFM1st PEEL SPRING 1 OPEN O1800 | Regular | 2476 |
| 2025-03-25 | Greater Toronto Chess League 2025 | Regular | 2473 |
| 2025-03-16 | SCC & Chess4win March Break O1900 | Regular | 2462 |
| 2025-03-02 | 2025 Ottawa March Open | Regular | 2446 |
| 2025-02-24 | ACC Pushing Forward Crown | Regular | 2432 |
| 2025-02-17 | HH Reading Week Open - Crown | Regular | 2431 |
| 2025-01-19 | 2025 Ottawa Winter Open | Regular | 2407 |
| 2024-12-22 | Hart House Holidays Open - Crown | Regular | 2376 |
| 2024-12-09 | 2024 GTCL Cup - Championship | Quick | 2341 |
| 2024-12-08 | 2024 Ottawa December Open | Regular | 2363 |
| 2024-11-24 | TCC 2nd Blitz & Social | Quick | 2333 |
| 2024-11-03 | 2024 National Capital Open | Regular | 2348 |
| 2024-10-22 | Chess4win Fall O2000 | Regular | 2341 |
| 2024-10-20 | Toronto CC 1st Rapid & Social | Quick | 2363 |
| 2024-09-30 | 2024 Ted Winick Memorial Crown | Regular | 2334 |
| 2024-09-29 | TCC Inaugural Blitz | Quick | 2362 |
| 2024-09-02 | 2024 Toronto Open - Crown | Regular | 2334 |
| 2024-08-12 | 2024 Toronto Blitz Championship | Quick | 2354 |
| 2024-08-10 | 2024 FMF Rapid 3 Open | Quick | 2333 |
| 2024-07-18 | Canadian Open 2024 Section A | Regular | 2337 |
| 2024-06-24 | ACC June Bug Crown | Regular | 2361 |
FIDE rating history
Published rating lists through Nov 2026.
Download chart or data
View rating lists
Games
Published games available in our archive; coverage varies by tournament. Archive last checked: 2026-11-11 (UTC).
Online games are identified from known tournament names, playing sites and PGN mode. Other games are listed as OTB (over-the-board).
| # | Date | Event | Site | Round | White | Black | Result | Moves | View |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2026-07-17 | Canadian Open 2026 | Nepean, ON CAN | 9.1 | Jaferian,K | Rodrigue-Lemieux,Shawn | Draw: 1/2-1/2 | 20 | Open |
| 2 | 2026-07-17 | Canadian Open 2026 | Nepean, ON CAN | 9 | Jaferian,K | Rodrigue-Lemieux,Shawn | Draw: 1/2-1/2 | 20 | Open |
| 3 | 2026-07-16 | Canadian Open 2026 | Nepean, ON CAN | 8 | Stevens,C CAN | Jaferian,K | Draw: 1/2-1/2 | 22 | Open |
| 4 | 2026-07-16 | Canadian Open 2026 | Nepean, ON CAN | 8.2 | Stevens,C CAN | Jaferian,K | Draw: 1/2-1/2 | 22 | Open |
| 5 | 2026-07-15 | Canadian Open 2026 | Nepean, ON CAN | 7.4 | Jaferian,K | Chiku-Ratte,Olivier-Kenta | Won: 1-0 | 47 | Open |
| 6 | 2026-07-15 | Canadian Open 2026 | Nepean, ON CAN | 7 | Jaferian,K | Chiku-Ratte,Olivier-Kenta | Won: 1-0 | 47 | Open |
| 7 | 2026-07-14 | Canadian Open 2026 | Nepean, ON CAN | 6.1 | Preotu,Razvan | Jaferian,K | Lost: 1-0 | 26 | Open |
| 8 | 2026-07-13 | Canadian Open 2026 | Nepean, ON CAN | 5.1 | Jaferian,K | Plotkin,V | Won: 1-0 | 51 | Open |
| 9 | 2026-07-13 | Canadian Open 2026 | Nepean, ON CAN | 5 | Jaferian,K | Plotkin,V | Won: 1-0 | 51 | Open |
| 10 | 2026-07-12 | Canadian Open 2026 | Nepean, ON CAN | 3 | Jaferian,K | Stremavicius,T | Won: 1-0 | 52 | Open |
| 11 | 2026-07-12 | Canadian Open 2026 | Nepean, ON CAN | 4 | Golubka,P | Jaferian,K | Draw: 1/2-1/2 | 43 | Open |
| 12 | 2026-07-12 | Canadian Open 2026 | Nepean, ON CAN | 4.1 | Golubka,P | Jaferian,K | Draw: 1/2-1/2 | 43 | Open |
| 13 | 2026-07-12 | Canadian Open 2026 | Nepean, ON CAN | 3.4 | Jaferian,K | Stremavicius,T | Won: 1-0 | 52 | Open |
| 14 | 2026-07-11 | Canadian Open 2026 | Nepean, ON CAN | 1.14 | Jaferian,K | Dembla,Shabd | Won: 1-0 | 22 | Open |
| 15 | 2026-07-11 | Canadian Open 2026 | Nepean, ON CAN | 2.13 | Liu,Zachary Hankun | Jaferian,K | Won: 0-1 | 52 | Open |
| 16 | 2026-04-07 | Canadian Closed 2026 | Montreal CAN | 9.5 | Yao,Lucas Mason Pin Qian | Jaferian,K | Draw: 1/2-1/2 | 49 | Open |
| 17 | 2026-04-06 | Canadian Closed 2026 | Montreal CAN | 8.5 | Jaferian,K | Keleberda,Tymur | Draw: 1/2-1/2 | 30 | Open |
| 18 | 2026-04-06 | Canadian Closed 2026 | Montreal CAN | 7.7 | Vettese,Nicholas | Jaferian,K | Won: 0-1 | 37 | Open |
| 19 | 2026-04-04 | Canadian Closed 2026 | Montreal CAN | 6.12 | Salkeld,Tobias | Jaferian,K | Won: 0-1 | 45 | Open |
| 20 | 2026-04-04 | Canadian Closed 2026 | Montreal CAN | 5.13 | Jaferian,K | Terry,Joshua | Draw: 1/2-1/2 | 61 | Open |
| 21 | 2026-04-03 | Canadian Closed 2026 | Montreal CAN | 3.14 | Jaferian,K | Yang,Bohan (Henry) | Won: 1-0 | 55 | Open |
| 22 | 2026-04-03 | Canadian Closed 2026 | Montreal CAN | 4.7 | Atanasov,Anthony | Jaferian,K | Lost: 1-0 | 52 | Open |
| 23 | 2026-04-02 | Canadian Closed 2026 | Montreal CAN | 1.17 | Jaferian,K | Jutras,Arnaud | Won: 1-0 | 28 | Open |
| 24 | 2026-04-02 | Canadian Closed 2026 | Montreal CAN | 2.12 | Velasquez,Noah | Jaferian,K | Draw: 1/2-1/2 | 73 | Open |
| 25 | 2025-09-01 | Toronto Open Crown 2025 | Toronto CAN | 6.8 | Koosha Jaferian | Matthew Shih | Won: 1-0 | 33 | Open |
| 26 | 2025-09-01 | Toronto Open Crown 2025 | Toronto CAN | 5.12 | Koosha Jaferian | Daniel Zhang | Won: 1-0 | 33 | Open |
| 27 | 2025-08-31 | Toronto Open Crown 2025 | Toronto CAN | 4.11 | Isaac Wiebe | Koosha Jaferian | Draw: 1/2-1/2 | 57 | Open |
| 28 | 2025-08-31 | Toronto Open Crown 2025 | Toronto CAN | 3.12 | Irene Xie | Koosha Jaferian | Draw: 1/2-1/2 | 47 | Open |
| 29 | 2025-08-30 | Toronto Open Crown 2025 | Toronto CAN | 2.12 | Koosha Jaferian | Michael Barron | Draw: 1/2-1/2 | 78 | Open |
| 30 | 2025-08-30 | Toronto Open Crown 2025 | Toronto CAN | 1.8 | Laksshana Deepak | Koosha Jaferian | Lost: 1-0 | 60 | Open |
| 31 | 2025-08-06 | Royal City Masters 2025 | Guelph CAN | 9.8 | Koosha Jaferian | Larry Yang | Won: 1-0 | 32 | Open |
| 32 | 2025-08-05 | Royal City Masters 2025 | Guelph CAN | 8.1 | David H. Cummings | Koosha Jaferian | Draw: 1/2-1/2 | 110 | Open |
| 33 | 2025-08-05 | Royal City Masters 2025 | Guelph CAN | 7.1 | Koosha Jaferian | Raymond Kaufman | Draw: 1/2-1/2 | 41 | Open |
| 34 | 2025-08-04 | Royal City Masters 2025 | Guelph CAN | 6.13 | Emanuel Kot | Koosha Jaferian | Won: 0-1 | 58 | Open |
| 35 | 2025-08-03 | Royal City Masters 2025 | Guelph CAN | 5.13 | Koosha Jaferian | Nicholas Vettese | Draw: 1/2-1/2 | 26 | Open |
| 36 | 2025-08-03 | Royal City Masters 2025 | Guelph CAN | 4.11 | Koosha Jaferian | Joshua Posthuma | Lost: 0-1 | 24 | Open |
| 37 | 2025-08-02 | Royal City Masters 2025 | Guelph CAN | 3.9 | Nicolai Woltery | Koosha Jaferian | Draw: 1/2-1/2 | 35 | Open |
| 38 | 2025-08-02 | Royal City Masters 2025 | Guelph CAN | 2.13 | Koosha Jaferian | Calix Marchand | Won: 1-0 | 76 | Open |
| 39 | 2025-08-01 | Royal City Masters 2025 | Guelph CAN | 1.16 | Zachary Saine | Koosha Jaferian | Lost: 1-0 | 41 | Open |
| 40 | 2025-04-22 | Canadian Closed 2025 | Toronto CAN | 9.7 | Neil Moses | Koosha Jaferian | Won: 0-1 | 61 | Open |
| 41 | 2025-04-21 | Canadian Closed 2025 | Toronto CAN | 8.8 | Koosha Jaferian | Roman Gavrilin | Draw: 1/2-1/2 | 24 | Open |
| 42 | 2025-04-21 | Canadian Closed 2025 | Toronto CAN | 7.11 | Tony Bohan Bao | Koosha Jaferian | Won: 0-1 | 46 | Open |
| 43 | 2025-04-20 | Canadian Closed 2025 | Toronto CAN | 6.6 | Koosha Jaferian | Dzmitry Kalinin | Lost: 0-1 | 75 | Open |
| 44 | 2025-04-19 | Canadian Closed 2025 | Toronto CAN | 5.9 | Dongkai Harry Wang | Koosha Jaferian | Draw: 1/2-1/2 | 36 | Open |
| 45 | 2025-04-19 | Canadian Closed 2025 | Toronto CAN | 4.2 | Koosha Jaferian | Shawn Rodrigue-Lemieux | Lost: 0-1 | 70 | Open |
| 46 | 2025-04-18 | Canadian Closed 2025 | Toronto CAN | 3.2 | Anthony Atanasov | Koosha Jaferian | Draw: 1/2-1/2 | 34 | Open |
| 47 | 2025-04-18 | Canadian Closed 2025 | Toronto CAN | 2.1 | Koosha Jaferian | Michael Blair | Won: 1-0 | 52 | Open |
| 48 | 2025-04-17 | Canadian Closed 2025 | Toronto CAN | 1.12 | Sergey Malakhovets | Koosha Jaferian | Won: 0-1 | 32 | Open |
| 49 | 2025-02-17 | Hart House Crown 2025 | Toronto CAN | 6.3 | Samuel Zhang | Koosha Jaferian | Draw: 1/2-1/2 | 27 | Open |
| 50 | 2025-02-17 | Hart House Crown 2025 | Toronto CAN | 5.1 | Koosha Jaferian | Nikolay Noritsyn | Lost: 0-1 | 45 | Open |
- vs Rodrigue-Lemieux,ShawnDraw · ½–½White · 2026-07-17 · Round 9.1Canadian Open 2026
- vs Rodrigue-Lemieux,ShawnDraw · ½–½White · 2026-07-17 · Round 9Canadian Open 2026
- vs Stevens,C CANDraw · ½–½Black · 2026-07-16 · Round 8Canadian Open 2026
- vs Stevens,C CANDraw · ½–½Black · 2026-07-16 · Round 8.2Canadian Open 2026
- vs Chiku-Ratte,Olivier-KentaWon · 1-0White · 2026-07-15 · Round 7.4Canadian Open 2026
- vs Chiku-Ratte,Olivier-KentaWon · 1-0White · 2026-07-15 · Round 7Canadian Open 2026
- vs Preotu,RazvanLost · 1-0Black · 2026-07-14 · Round 6.1Canadian Open 2026
- vs Plotkin,VWon · 1-0White · 2026-07-13 · Round 5.1Canadian Open 2026
- vs Plotkin,VWon · 1-0White · 2026-07-13 · Round 5Canadian Open 2026
- vs Stremavicius,TWon · 1-0White · 2026-07-12 · Round 3Canadian Open 2026
- vs Golubka,PDraw · ½–½Black · 2026-07-12 · Round 4Canadian Open 2026
- vs Golubka,PDraw · ½–½Black · 2026-07-12 · Round 4.1Canadian Open 2026
- vs Stremavicius,TWon · 1-0White · 2026-07-12 · Round 3.4Canadian Open 2026
- vs Dembla,ShabdWon · 1-0White · 2026-07-11 · Round 1.14Canadian Open 2026
- vs Liu,Zachary HankunWon · 0-1Black · 2026-07-11 · Round 2.13Canadian Open 2026
- vs Yao,Lucas Mason Pin QianDraw · ½–½Black · 2026-04-07 · Round 9.5Canadian Closed 2026
- vs Keleberda,TymurDraw · ½–½White · 2026-04-06 · Round 8.5Canadian Closed 2026
- vs Vettese,NicholasWon · 0-1Black · 2026-04-06 · Round 7.7Canadian Closed 2026
- vs Salkeld,TobiasWon · 0-1Black · 2026-04-04 · Round 6.12Canadian Closed 2026
- vs Terry,JoshuaDraw · ½–½White · 2026-04-04 · Round 5.13Canadian Closed 2026
- vs Yang,Bohan (Henry)Won · 1-0White · 2026-04-03 · Round 3.14Canadian Closed 2026
- vs Atanasov,AnthonyLost · 1-0Black · 2026-04-03 · Round 4.7Canadian Closed 2026
- vs Jutras,ArnaudWon · 1-0White · 2026-04-02 · Round 1.17Canadian Closed 2026
- vs Velasquez,NoahDraw · ½–½Black · 2026-04-02 · Round 2.12Canadian Closed 2026
- vs Matthew ShihWon · 1-0White · 2025-09-01 · Round 6.8Toronto Open Crown 2025
- vs Daniel ZhangWon · 1-0White · 2025-09-01 · Round 5.12Toronto Open Crown 2025
- vs Isaac WiebeDraw · ½–½Black · 2025-08-31 · Round 4.11Toronto Open Crown 2025
- vs Irene XieDraw · ½–½Black · 2025-08-31 · Round 3.12Toronto Open Crown 2025
- vs Michael BarronDraw · ½–½White · 2025-08-30 · Round 2.12Toronto Open Crown 2025
- vs Laksshana DeepakLost · 1-0Black · 2025-08-30 · Round 1.8Toronto Open Crown 2025
- vs Larry YangWon · 1-0White · 2025-08-06 · Round 9.8Royal City Masters 2025
- vs David H. CummingsDraw · ½–½Black · 2025-08-05 · Round 8.1Royal City Masters 2025
- vs Raymond KaufmanDraw · ½–½White · 2025-08-05 · Round 7.1Royal City Masters 2025
- vs Emanuel KotWon · 0-1Black · 2025-08-04 · Round 6.13Royal City Masters 2025
- vs Nicholas VetteseDraw · ½–½White · 2025-08-03 · Round 5.13Royal City Masters 2025
- vs Joshua PosthumaLost · 0-1White · 2025-08-03 · Round 4.11Royal City Masters 2025
- vs Nicolai WolteryDraw · ½–½Black · 2025-08-02 · Round 3.9Royal City Masters 2025
- vs Calix MarchandWon · 1-0White · 2025-08-02 · Round 2.13Royal City Masters 2025
- vs Zachary SaineLost · 1-0Black · 2025-08-01 · Round 1.16Royal City Masters 2025
- vs Neil MosesWon · 0-1Black · 2025-04-22 · Round 9.7Canadian Closed 2025
- vs Roman GavrilinDraw · ½–½White · 2025-04-21 · Round 8.8Canadian Closed 2025
- vs Tony Bohan BaoWon · 0-1Black · 2025-04-21 · Round 7.11Canadian Closed 2025
- vs Dzmitry KalininLost · 0-1White · 2025-04-20 · Round 6.6Canadian Closed 2025
- vs Dongkai Harry WangDraw · ½–½Black · 2025-04-19 · Round 5.9Canadian Closed 2025
- vs Shawn Rodrigue-LemieuxLost · 0-1White · 2025-04-19 · Round 4.2Canadian Closed 2025
- vs Anthony AtanasovDraw · ½–½Black · 2025-04-18 · Round 3.2Canadian Closed 2025
- vs Michael BlairWon · 1-0White · 2025-04-18 · Round 2.1Canadian Closed 2025
- vs Sergey MalakhovetsWon · 0-1Black · 2025-04-17 · Round 1.12Canadian Closed 2025
- vs Samuel ZhangDraw · ½–½Black · 2025-02-17 · Round 6.3Hart House Crown 2025
- vs Nikolay NoritsynLost · 0-1White · 2025-02-17 · Round 5.1Hart House Crown 2025
FIDE tournaments
| Date | Tournament | Type | Score |
|---|---|---|---|
| 2026-10-10 | 2026 Chess4win Thanksgiving Open O2100 | Classical | 3½ |