CChessStats

2025 Southern Alberta Open Premier

Open SwissStandard

31 players participated in this 5-round tournament, held from 22 Nov 2025 to 23 Nov 2025 in Calgary, AB, Canada. 2 federations represented. Top 10 Elo average was 2001, and top seed was Maikl Prianichnikov (🇨🇦 CAN, 2105).

Omid Malek (🇨🇦 CAN, 1972) won with 4.5/5, ahead of Sigfrido Pacheco-Vega (4.5) and Roy Yearwood (4.0). Malek shared the lead from round 4, winning on tie-break.

The biggest upset came in round 1: Bruce Coates (1199) beat Sophia Guzman (1789), a +590-point gap.

Location
🇨🇦Calgary, AB, Canada
Dates
22 Nov 2025 → 23 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
Avg top 10
2,001
Participants
31
Federations · 2 represented
🇨🇦Canada×30
🇨🇱Chile×1
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders
12
6
1
3
2
1.52.545R1R2R3R4R5
R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Malek takes the title on Buchholz Cut1 (13.5).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Sigfrido Pacheco-Vega drew with Omid Malek (White).

R3–R5 · WIN STREAK

Roy Yearwood won 3 in a row (R3–R5).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Sigfrido Pacheco-Vega*
½
2Omid Malek
½
*
1
3Roy Yearwood*
4Tobias Salkeld
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Malek, Omid1972CAN+15N+7B=2N+19B+4N4.513.515.513.252687+25.6
2Pacheco-Vega, Sigfrido2025CAN+22N+8B=1B+13N+6B4.513.014.512.2519690.0
3Yearwood, Roy1901CAN+29B6N+14B+24N+7N4.09.59.56.502005+20.0
4Salkeld, Tobias1817CAN+11B+16N=13B+6N1B3.513.015.59.752074+18.4
5Riquelme Bravo, Martin2092CHI=18B+30N19N+27B+13B3.57.57.54.501958-14.4
6Vasic, Maxim2101CAN+17N+3B+10N4B2N3.015.017.59.502059+4.4
7Botoy, James Pajo1791CAN+28B1N+12B+9N3B3.014.515.06.501944+10.6
8Sibulo, Nerio1595CAN+24B2N+30B10B+18N3.010.510.53.001910+12.8
9Li, Jake Chi Hang1499CAN20B+25N+18B7B+21N3.09.010.05.001781+22.8
10Villamar, Eros1836CAN+25B+20N6B+8NF3.09.09.06.001964+17.2
11Xu, Michael1804CAN4N14B+25N+26B+24B3.08.09.03.001791-15.1
12Goodman, Kevin1988CANF+31B7N+22B+19N3.06.56.53.502034-5.6
13Prianichnikov, Maikl2105CAN+23N+26B=4N2B5N2.513.014.04.251927+10.0
14Lodhi, Talha1697CAN16B+11N3N=17B+22N2.512.013.55.751793+14.4
15Sheng, Jack1797CAN1B=18N+23BF+16N2.510.510.55.001882+34.0
16Sehn, Isaiah1765CAN+14N4B=22N+28B15B2.510.010.53.751764-13.6
17Zhang, Finley1619CAN6B=28N=21B=14N+23B2.59.09.54.001741+3.2
18Thomson, Zachary1704CAN=5N=15B9N+20N8B2.012.014.05.001713-0.6
19Abdelrhman, Hamid2087CANF+27N+5B1N12B2.012.012.04.501998+3.4
20Michalchuk, Avery1826CAN+9N10B24N18B+28N2.09.09.53.501654-10.8
21Guzman, Sophia1789CAN26N=23B=17N+29B9B2.08.08.02.001593-29.2
22Trentalance, Josiah1746CAN2B+29N=16B12N14B1.512.512.51.251713-6.0
23Zhang, Felix1708CAN13B=21N15N+30B17N1.59.59.51.001583-4.7
24Shamanth, Saanvi1714CAN8NF+20B3B11N1.012.012.02.001605-6.4
25Lee, Raphael1589CAN10N9B11BF+29N1.09.09.00.001577-4.2
26Coates, Bruce1199CAN+21B13N27B11NF1.08.58.52.001631-10.8
27Gallemaso, Bong1901CANF19B+26N5NF1.06.56.51.001772-5.6
28Agyenim-Boateng, Nathaniel1237CAN7N=17BF16N20B0.510.010.01.251450-45.6
29Shtepa, Liubov1746CAN3N22BF21N25B0.08.58.50.00912-61.6
30Atwood, Matthew1337CANF5B8N23NF0.08.08.00.001008-19.0
31Tadique, Edgardo1716CANF12NFFF0.03.53.50.001278-7.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets