CChessStats

2025 Toronto Chess Centre Summer Open - U2100

Open SwissStandard

12 players participated in this 5-round tournament, held from 07 Jun 2025 to 08 Jun 2025 in Toronto, ON, Canada. Top 10 Elo average was 1780, and top seed was Brian Fiedler (πŸ‡¨πŸ‡¦ CAN, 1940).

Jayden Zihan Zhan (πŸ‡¨πŸ‡¦ CAN, 1742) won with 4.0/5, ahead of Riyaan Lakhani (4.0) and Isaac Duanmu (3.5). Zhan shared the lead from round 1, winning on tie-break.

The biggest upset came in round 2: Yiguo Gao (1553) beat Brian Fiedler (1940), a +387-point gap.

Location
πŸ‡¨πŸ‡¦Toronto, ON, Canada
Dates
07 Jun 2025 β†’ 08 Jun 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss Β· 5 rounds
Top seed
πŸ‡¨πŸ‡¦Brian Fiedler1940
Avg top 10
1,780
Participants
12
Federations Β· 1 represented
πŸ‡¨πŸ‡¦CanadaΓ—12
Top 3
  • πŸ₯‡
    Jayden Zihan Zhan
    πŸ‡¨πŸ‡¦CANΒ·1742
    4.0ptsΒ·2058perf+80.4
  • πŸ₯ˆ
    Riyaan Lakhani
    πŸ‡¨πŸ‡¦CANΒ·1844
    4.0ptsΒ·1944perf+12.0
  • πŸ₯‰
    Isaac Duanmu
    πŸ‡¨πŸ‡¦CANΒ·1738
    3.5ptsΒ·1927perf+51.2

How it unfolded

Top 6 Β· 5 rounds

Tight race until R3; 2 players tied at 4.0/5, decided on Buchholz.

Co-leaders
4
2
1
1
2
1.52.545R1R2R3R4R5
Zhan4Lakhani4Duanmu3.5Mammadov3Li2.5Gao2.5
R3–R5 Β· LEAD HELD

Jayden Zihan Zhan held the sole lead from R3 through R5 without losing it.

R5 Β· TIEBREAK CLUSTER

2 players finish on 4.0/5. Zhan takes the title on Buchholz Cut1 (13.0).

R3 Β· HEAD-TO-HEAD Β· WINNER VS 2ND

Jayden Zihan Zhan beat Riyaan Lakhani (Black).

Key matchups Β· top 4

Head-to-head between the four finishers
Player1234
1Jayden Zihan Zhan*
1
Β½
Β½
2Riyaan Lakhani
0
*
1
1
3Isaac Duanmu
Β½
0
*β€”
4Nihad Mammadov
Β½
0
β€”*

Grille amΓ©ricaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΞ”
1Zhan, Jayden Zihan1742CAN+12B+5B+2N=4N=3B4.013.013.09.752058+80.4
2Lakhani, Riyaan1844CAN+11B+3Nβˆ’1B+7N+4B4.013.013.09.001944+12.0
3Duanmu, Isaac1738CAN+9Nβˆ’2B+6N+5B=1N3.513.014.08.001927+51.2
4Mammadov, Nihad1770CAN=6N+10B+9N=1Bβˆ’2N3.011.512.55.251825+15.2
5Li, Ethan Yichen1798CAN+7Bβˆ’1N+8Bβˆ’3N=6B2.512.514.55.751686-29.2
6Katz, Lyam1661CAN=4B=8Nβˆ’3B+11N=5N2.511.011.03.751751+12.2
7Gao, Yiguo1553CANβˆ’5N+12N+10Bβˆ’2B=8N2.59.59.52.001798+58.4
8Allahverdi, Umid1734CANF=6Bβˆ’5N+9B=7B2.08.58.53.501714-4.0
9Zhao, Jifan1843CANβˆ’3B+11Nβˆ’4Bβˆ’8NF1.08.58.50.001547-62.4
10Wang, Zi1676CANFβˆ’4Nβˆ’7NF+11B1.05.55.50.001556-19.2
11Krivykh, Daniel1718CANβˆ’2Nβˆ’9BFβˆ’6Bβˆ’10N0.08.58.50.00956-72.0
12Fiedler, Brian1940CANβˆ’1Nβˆ’7BFFF0.06.56.50.00848-33.4

Key insights

Biggest movers and upsets β€” the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
2025 Toronto Chess Centre Summer Open - U2100 β€” Toronto, ON, Canada | Chess Tournament Results | ChessStats