CChessStats

VPHS_RIVIERA 2025 16-17 August STANDARD-A

Open SwissStandard

23 players participated in this 7-round tournament, held from 16 Aug 2025 to 17 Aug 2025 in Moscow, Russia. 3 federations represented. Top 10 Elo average was 1534, and top seed was Matvey Lyakhin (🇷🇺 RUS, 1642).

Sergey Grishin (🇷🇺 RUS, 1556) won with 6.0/7, ahead of Matvey Lyakhin (5.5) and Arseniy Aleks Khorkov (5.5). Grishin won solo starting round 4.

The biggest upset came in round 1: Roman Mik Bryzgunov (1422) beat Mikhail Andr Zaitsev (1599), a +177-point gap.

Location
🇷🇺Moscow, Russia
Dates
16 Aug 2025 → 17 Aug 2025
Time control
Standard: All Moves in 30 Min. Del. 30 Sec. / /
System
Swiss · 7 rounds
Top seed
🇷🇺Matvey Lyakhin1642
Avg top 10
1,534
Participants
23
Federations · 3 represented
🇷🇺Russia×20
🇲🇪Montenegro×1
🇦🇿Azerbaijan×1
Top 3

How it unfolded

Top 6 · 7 rounds

Sergey Grishin led from R4; +0.5-point edge over the runner-up.

Co-leaders
9
5
2
1
1
1
1
23.55.57R1R2R3R4R5R6R7
Grishin6Lyakhin5.5Khorkov5.5Zaitsev4.5Sulin4.5Bryzgunov4.5
R4–R7 · LEAD HELD

Sergey Grishin held the sole lead from R4 through R7 without losing it.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Sergey Grishin beat Matvey Lyakhin (White).

WIN STREAKS · 2 top finishers

Sergey Grishin 6 wins (R1–R6)Matvey Lyakhin 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Sergey Grishin*
1
0
1
2Matvey Lyakhin
0
*
½
—
3Arseniy Aleks Khorkov
1
½
*—
4Mikhail Andr Zaitsev
0
——*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Grishin, Sergey1556RUS+14N+11B+7N+2B+6N+5B−3N6.027.530.525.001747+39.6
2Lyakhin, Matvey1642RUS+13B+21N+4B−1N=3B+10N+7B5.527.028.519.751663+5.6
3Khorkov, Arseniy Aleks1554RUS=16B+20N+9B=4N=2N+7B+1B5.526.528.021.751706+25.2
4Sulin, Fedor Ser1541RUS+17N+19B−2N=3B=10N=6B+8N4.526.027.515.001533-2.4
5Zaitsev, Mikhail Andr1599RUS−6N+18B+10N=8B+11N−1N+12B4.525.528.015.501547-15.6
6Bryzgunov, Roman Mik1422RUS+5B−9N+21B+17N−1B=4N+11B4.525.026.514.251566+11.4
7Sumbaev, Maksim0RUS+8N+22B−1B+9N+13B−3N−2N4.028.029.512.5014760.0
8Tutykhin, Erkin Val1561RUS−7B=12N+16B=5N+9B+15N−4B4.023.526.013.501516-9.6
9Strazhalkovskij, Vladimir0RUS+18N+6B−3N−7B−8N+19B+15B4.023.525.011.5015090.0
10Jafarov, Orhan1515AZE=20B+16N−5B+19N=4B−2B+14N4.021.523.010.001322-23.2
11Tyulina, Vera0RUS+15B−1N=13B+12N−5B+16N−6N3.524.527.010.5014310.0
12Krivolapova, Daria S1456RUS−19N=8B+20N−11B+17B+13N−5N3.519.020.59.001530+11.6
13Sorochenkov, Alexander1428MNE−2N+23B=11N+14B−7N−12B=16N3.022.023.07.001395-6.0
14Yakovlev, Vladimir Dm0RUS−1B+15N=19B−13N=16B+23N−10B3.020.021.06.0014070.0
15Olzoev, Denis1460RUS−11N−14B+23N+22B+18N−8B−9N3.018.519.55.001614+24.4
16Parygina, Galina0RUS=3N−10B−8N+20B=14N−11B=13B2.523.024.57.2513150.0
17Grishina, Anastasiya0RUS−4BF+22N−6B−12N=18B+21N2.518.018.04.2511470.0
18Yakushevich, Daniil1448RUS−9B−5NF+21N−15B=17N+20B2.517.017.04.25731-31.2
19Lomachinskiy, Vyacheslav0RUS+12B−4N=14N−10B−23B−9NF1.520.020.05.0012940.0
20Ivanov-Pogodaev, Ilya0RUS=10N−3B−12B−16NF+22B−18N1.519.519.53.5011650.0
21FIDE 5400568050—+23N−2B−6N−18B=22NF−17B1.517.517.51.7513000.0
22Tsinamdzgvrishvili, Tikhon0RUSF−7N−17B−15N=21B−20N+23B1.513.513.51.7514590.0
23Saffiulinna, Dina1457RUS−21B−13N−15BF+19N−14B−22N1.013.513.51.50645-41.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets