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Chai, Isaac

🇦🇺

FIDEFIDE 3237842· Male· Australia· Born in 2009

Follow Isaac ChaiTrack his monthly FIDE ratings, games, tournaments and more.

Isaac Chai, a 17-year-old Australian player, is rated 1783 — his current career high. He plays occasionally (7 games in the last 12 months) and had 2 career breaks: 16 months (2021–2022) and 14 months (2025–2026). Recent appearance: 2026 O2C Doeberl Cup Minor.

At junior level, he reached #39, #55, #41, #11 and #9 nationally in U18, U16, U14, U12 and U10.

Current rating

1783

Standard

Rpd—·Blz1631

All-time high

1783

at best
May 2026 · age 17

Activity

13

games / yr avg. · ≈1/mo

7 past 12 mo · ≈1/mo
classical only
Moderately active

Signature stat

#81,699

#81,699 · players worldwide · of 218,279

Career timeline

17 entries
2026
39th Australian U18 player
at age 17 · rated 1783
May 2026
All-time peak 1783
at age 17
May 2026
2025
55th Australian U16 player
at age 16 · rated 1764
Feb 2025
Inactive for 14 months
paused at 1764 → returned at 1783
Feb 2025
2024
Best 12-month gain (+311 Elo)
1394 → 1705
Mar 2024
Crossed 1600
at age 15
Mar 2024

Standard rating history

Peak
FIDE title
Threshold
First rated
Inactive period
COVID-19
FIDE recal.

Activity & highlights

Top opponent
vs Sahasra Selva Muthukumar 1,697
2026 O2C Doeberl Cup Minor · Apr 2026 · +15.1 Elo
Evolution
+19
1764 → 1783
Tournaments
1
7 games
Score
5.5/ 778.6%
5W1D1L
Top 3 wins
1.[W]vsSahasra Selva Muthukumar1,697·2026 O2C Doeberl Cup Minor·R4·+15.1
2.[W]vsAarav Rawat1,616·2026 O2C Doeberl Cup Minor·R1·+11.1
3.[W]vsBella Xia1,588·2026 O2C Doeberl Cup Minor·R7·+9.8
Top 1 loss
1.[L]vsHarvey Kuncoro1,591·2026 O2C Doeberl Cup Minor·R2·-30.0

Last 12 months — tournaments

1 event
EventDateScoreRankPerfΔ Elo
2026 O2C Doeberl Cup Minor
Open Swiss
Apr 20265.5/7#51826+19.2

Rankings

/
Australia
#471
out of 2,432 players
Asia-Pacific
#10,087
in continent
World
#81,697
out of 400,000+

National ranking

Europe & World

Europe
World
Australia
1
🇦🇺Cheng, BobbyFollow Bobby ChengTrack their monthly FIDE ratings, games, tournaments and more.
2,571
2
🇦🇺Kuybokarov, TemurFollow Temur KuybokarovTrack their monthly FIDE ratings, games, tournaments and more.
2,534
3
🇦🇺Tan, JustinFollow Justin TanTrack their monthly FIDE ratings, games, tournaments and more.
2,510
4
🇦🇺Sardana, RishiFollow Rishi SardanaTrack their monthly FIDE ratings, games, tournaments and more.
2,506
5
🇦🇺Smerdon, David CFollow David C SmerdonTrack their monthly FIDE ratings, games, tournaments and more.
2,460
6
🇦🇺Morris, JamesFollow James MorrisTrack their monthly FIDE ratings, games, tournaments and more.
2,423
7
🇦🇺Zhao, Zong-YuanFollow Zong-Yuan ZhaoTrack their monthly FIDE ratings, games, tournaments and more.
2,409
8
🇦🇺Liu, YiFollow Yi LiuTrack their monthly FIDE ratings, games, tournaments and more.
2,399
9
🇦🇺McClymont, BrodieFollow Brodie McClymontTrack their monthly FIDE ratings, games, tournaments and more.
2,389
10
🇦🇺Winkelman, AlbertFollow Albert WinkelmanTrack their monthly FIDE ratings, games, tournaments and more.
2,385
...
471🇦🇺Chai, Isaac1,783
Asia-Pacific
1
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
1
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
3
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
4
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
5
🇮🇳Anand, ViswanathanFollow Viswanathan AnandTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇨🇳Ding, LirenFollow Liren DingTrack their monthly FIDE ratings, games, tournaments and more.
2,738
7
🇮🇳Praggnanandhaa RFollow Praggnanandhaa RTrack their monthly FIDE ratings, games, tournaments and more.
2,735
8
🇷🇺Nepomniachtchi, IanFollow Ian NepomniachtchiTrack their monthly FIDE ratings, games, tournaments and more.
2,733
9
🇮🇳Gukesh DFollow Gukesh DTrack their monthly FIDE ratings, games, tournaments and more.
2,732
10
🇻🇳Le, Quang LiemFollow Quang Liem LeTrack their monthly FIDE ratings, games, tournaments and more.
2,731
...
10087🇦🇺Chai, Isaac1,783
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
2
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,792
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
4
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
6
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
8
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,753
9
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
81697🇦🇺Chai, Isaac1,783