CChessStats

2025 Chess4win December Markham Open O1900

Open SwissStandard

30 players participated in this 5-round tournament, held from 06 Dec 2025 to 07 Dec 2025 in Markham, ON, Canada. 5 titled players from 5 federations. Top 10 Elo average was 2026, and top seed was David H. Cummings (🇨🇦 CAN, IM, 2235).

Henry Yao (🇨🇦 CAN, 1892) won with 4.0/5, ahead of Jeffrey R Zhao (4.0) and Surender Kumar Sharma (3.5). Yao shared the lead from round 4, winning on tie-break.

The biggest upset came in round 3: Korosh Bolandnazar (1803) beat Irene Xie (WFM, 1996), a +193-point gap.

Location
🇨🇦Markham, ON, Canada
Dates
06 Dec 2025 → 07 Dec 2025
Time control
Standard: 75 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇨🇦IMDavid H. Cummings2235
Avg top 10
2,026
Participants
30
Titled players · 5
IM×1
FM×1
CM×1
WFM×2
Federations · 5 represented
🇨🇦Canada×26
🇳🇱Netherlands×1
🇮🇳India×1
🇺🇸United States of America×1
🇮🇷Iran×1
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.0/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
12
5
1
2
2
1.52.545R1R2R3R4R5
R5 · TIEBREAK CLUSTER

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

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Henry Yao drew with Jeffrey R Zhao (White).

R1–R3 · WIN STREAK

Jeffrey R Zhao won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Henry Yao*
½
1
2Jeffrey R Zhao
½
*
½
3Surender Kumar Sharma
0
*
4IMDavid H. Cummings
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Yao, Henry1892CAN+5B+3N=10B+11N=2B4.013.015.512.252206+79.2
2Zhao, Jeffrey R2070CAN+17N+20B+12N=4B=1N4.012.013.59.752173+25.6
3Surender Kumar Sharma1946IND+8N1B+25B=20N+7B3.511.512.57.752050+13.8
4Cummings, David H.IM2235CAN+9B+19NF=2N+10B3.511.511.59.502289+2.1
5Huang, Eric1808CAN1N+30B+8N14B+21N3.011.011.04.501926+25.2
6Bolandnazar, Korosh1803IRI+7B=14N+13B10N=11B3.010.513.08.002062+68.8
7Wang, Bingfei1957CAN6N+27B+17N+18B3N3.010.511.04.501901-6.8
8Deepak, LaksshanaWFM1941CAN3B+28N5B+23N+19B3.09.510.03.501873-16.4
9Lakhani, Riyaan1868CAN4N=23B+22N+21B=24N3.07.58.54.001911+4.6
10Qian, Eric2041CANF+21B=1N+6B4N2.512.012.06.502047+1.2
11Gao, HeyeCM1966CANF+22B+18N1B=6N2.510.510.55.001895-13.6
12Ajith, Aarush1799CAN+28B+24N2B15N=13B2.510.010.52.751924+29.6
13Xie, IreneWFM1996CAN18N+29B6N+17B=12N2.59.59.53.251789-51.2
14Huang, Justin1993CAN+27N=6BF+5NF2.56.56.55.002038+6.0
15Malakar, SaarthakFM2114CANF=26N+19B+12BF2.55.55.55.002091-2.0
16Gandolfi, Fred1739CAN20N17B+27N=22B+29N2.55.55.51.251742+0.4
17Yang, Chengzhang1873CAN2B+16N7B13N+23B2.012.013.03.501826-12.8
18Casareno, Erwin1843NED+13B+25N11B7NF2.09.09.03.501941+10.6
19Bi, William1784CAN+30N4B15N+29B8N2.09.09.00.001774-8.0
20Tseng, Bradley1869CAN+16B2NF=3BF1.510.010.04.251918+7.6
21Pan, Julian1876CAN+23B10N=24B9N5B1.59.510.51.501679-52.4
22Madhu Vikram, Chaarvik1659CAN=26B11N9B=16N=27B1.59.09.52.001676+1.6
23Zhao, Shannon1727CAN21N=9N=28B8B17N1.09.510.01.751619-25.2
24Sama, Chetan Reddy1697CANF12B=21NF=9B1.08.08.02.251722+3.6
25Russell, Wesley1847CAN+29N18B3NFF1.05.55.50.001681-25.6
26Loadman, Ian1873CAN=22N=15BFFF1.05.05.02.001887+0.6
27Chamberland, Luc1684CAN14B7N16BF=22N0.59.510.00.751515-15.2
28Anish, Diganth1743CAN12N8B=23NFF0.57.07.00.501549-27.2
29Syed, Farhaan1627USA25B13NF19N16B0.08.08.00.001041-38.4
30Moshopoulos, Angelos0CAN19B5NFFF0.05.05.00.009970.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets