Slovakia Chess Open PIESTANY 2025 - OPEN A

SwissStandard

58 players participated in this 9-round tournament, held from 08 Jul 2025 to 16 Jul 2025 in Piestany, Slovakia. 33 titled players from 8 federations. Top 10 Elo average was 2376, and top seed was Anton Korobov (🇺🇦 UKR, GM, 2631).

Anton Korobov (🇺🇦 UKR, GM, 2631) won with 8.0/9, ahead of Simon Rybka (7.5) and Yevgeniy Roshka (6.5). Korobov took the lead from round 7.

The biggest upset came in round 7: Rupesh Reddy Y (FM, 2011) beat Simon Lang (2241), a +230-point gap.

Location

🇸🇰Piestany, Slovakia

Dates

08 Jul 2025 → 16 Jul 2025

Time control

Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1

System

Swiss · 9 rounds

Top seed

🇺🇦GMAnton Korobov2631

Avg top 10

2,376

Participants

Titled players · 33

GM×2

IM×3

FM×21

CM×6

WFM×1

Federations · 8 represented

🇸🇰Slovakia×22

🇮🇳India×11

🇵🇱Poland×10

🇨🇿Czech Republic×7

🇺🇦Ukraine×2

🇺🇸United States of America×2

🇨🇦Canada×1

🇵🇪Peru×1

Top 3

🥇
GMAnton Korobov
🇺🇦UKR·2631
8.0pts·2651perf+1.9
🥈
FMSimon Rybka
🇸🇰SVK·2333
7.5pts·2593perf+56.0
🥉
IMYevgeniy Roshka
🇺🇦UKR·2500
6.5pts·2472perf-1.3

How it unfolded

Top 6 · 9 rounds

GM Anton Korobov led from R7; +0.5-point edge over the runner-up. Title race converged from 5 co-leaders at R4 to 1 by R7.

Co-leaders

Korobov8Rybka7.5Roshka6.5Oruzinsky6Elias6Mikrut6

R7 · LEADER CHANGE14 Jul

GM Anton Korobov takes the sole lead (6.0/7).

R7 · HEAD-TO-HEAD · WINNER VS 2ND

GM Anton Korobov beat FM Simon Rybka (White).

WIN STREAKS · 3 top finishers

GM Anton Korobov 4 wins (R6–R9)FM Simon Rybka 4 wins (R3–R6)IM Yevgeniy Roshka 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1GMAnton Korobov	*	1	½	1
2FMSimon Rybka	0	*	1	—
3IMYevgeniy Roshka	½	0	*	1
4FMJuraj Oruzinsky	0	—	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Korobov, AntonGM	2631	UKR	+24B	=13N	+10B	+14N	=3B	+6N	+2B	+8N	+4B	8.0	47.0	51.5	45.75	2651	+1.9
2	Rybka, SimonFM	2333	SVK	+44N	=15B	+27N	+8B	+5N	+12B	−1N	+3N	+9B	7.5	46.0	49.5	39.00	2593	+56.0
3	Roshka, YevgeniyIM	2500	UKR	+32N	+18B	+4N	=5B	=1N	+14B	=12N	−2B	+19N	6.5	47.5	51.5	34.50	2472	-1.3
4	Oruzinsky, JurajFM	2260	SVK	+25N	+26B	−3B	=29N	+20B	+17N	=5B	+13N	−1N	6.0	44.5	49.0	29.25	2388	+58.4
5	Elias, DavidFM	2308	SVK	+46N	+53B	+30N	=3N	−2B	=8B	=4N	=6B	+12N	6.0	44.5	47.0	27.50	2399	+21.4
6	Mikrut, DariuszIM	2309	POL	=35B	+34N	+23B	−12N	+29B	−1B	+18N	=5N	+13B	6.0	42.5	46.5	28.50	2377	+7.6
7	Golubka, PetroGM	2316	CAN	+16N	=27B	−12N	=15B	=28N	+24B	=30N	+25B	+14N	6.0	38.0	42.5	28.25	2320	+0.3
8	Brzezina, PiotrFM	2296	POL	+38B	=21N	+45B	−2N	+23B	=5N	+35B	−1B	=11N	5.5	45.0	48.5	24.75	2331	+8.4
9	Jablonicky, MartinIM	2375	SVK	−21B	+54B	=16N	=37N	+34B	=13B	+17N	+12B	−2N	5.5	40.5	42.5	23.00	2260	-11.7
10	Brnusak, TomasFM	2234	SVK	=40N	+28B	−1N	=16B	+51N	+32B	−13N	=14B	+26N	5.5	40.0	42.5	22.50	2284	+11.0
11	Sriansh DasFM	2340	IND	=28N	+36B	=13N	=22B	=15N	−30B	+37B	+35N	=8B	5.5	37.5	41.5	24.50	2284	-12.8
12	Skreko, Igor	2199	SVK	+43B	=17N	+7B	+6B	+19N	−2N	=3B	−9N	−5B	5.0	47.5	51.5	26.75	2347	+69.6
13	Nayak RajeshFM	2227	IND	+42N	=1B	=11B	=20N	+24B	=9N	+10B	−4B	−6N	5.0	46.0	50.0	26.00	2324	+20.6
14	Priansh DasFM	2305	IND	=34B	+35N	+21B	−1B	+26N	−3N	+15B	=10N	−7B	5.0	44.5	48.5	23.25	2300	-2.0
15	Liskiewicz, JakubCM	2217	POL	+56B	=2N	=17B	=7N	=11B	=19B	−14N	+31N	=20B	5.0	43.5	45.5	23.50	2270	+27.2
16	Gaikwad, SiddhantFM	2148	IND	−7B	+56N	=9B	=10N	=18B	=27N	+29B	=20N	=24B	5.0	40.5	42.5	21.50	2256	+25.6
17	Arias Gaviria, Mario AlexisFM	2298	PER	+51N	=12B	=15N	=26B	+22N	−4B	−9B	+32N	=23B	5.0	40.0	42.5	21.25	2235	-14.4
18	Karasek, LukasFM	2218	CZE	+33N	−3N	+50B	−19B	=16N	+25B	−6B	=37N	+41B	5.0	39.0	42.0	20.00	2243	+4.8
19	Ernst, RobertFM	2334	AUT	=37B	=41N	+55B	+18N	−12B	=15N	=20B	+39N	−3B	5.0	38.5	40.5	20.00	2226	-24.2
20	Apaar SaxenaFM	2101	IND	+22N	−30B	+57N	=13B	−4N	+53B	=19N	=16B	=15N	5.0	38.0	39.5	19.00	2283	+41.2
21	Flak, Pawel	2156	POL	+9N	=8B	−14N	=39B	−25N	+50B	+48N	=26B	=22N	5.0	37.0	40.0	21.00	2213	+13.2
22	Fizer, MarekCM	2225	CZE	−20B	+38N	+33B	=11N	−17B	−37N	+44B	+45N	=21B	5.0	36.0	39.5	20.25	2202	-11.2
23	Aliev, Pavel	2188	SVK	=54N	+58B	−6N	+40B	−8N	=26B	=33N	+28B	=17N	5.0	35.5	36.5	17.25	2177	-2.2
24	Ugorek, KacperCM	2177	POL	−1N	+42B	+25N	=30B	−13N	−7N	=38B	+49B	=16N	4.5	41.0	44.0	18.25	2231	+21.6
25	Shubhi GuptaWFM	2114	IND	−4B	+52N	−24B	+41N	+21B	−18N	+27B	−7N	=29B	4.5	39.5	42.0	18.25	2211	+46.4
26	Zawisza, Alan	1976	POL	+52B	−4N	+41B	=17N	−14B	=23N	+36B	=21N	−10B	4.5	39.5	42.0	18.00	2219	+107.6
27	Pattnayak Nilsu	2205	IND	+50N	=7N	−2B	=28B	=39N	=16B	−25N	=34N	+45B	4.5	39.0	42.0	18.25	2141	-15.4
28	Neuhoff, LaertesFM	2156	GER	=11B	−10N	+58B	=27N	=7B	=29N	=45B	−23N	+39B	4.5	38.5	39.5	17.00	2177	+9.5
29	Hros, RomanFM	2212	SVK	=58N	=40B	+51N	=4B	−6N	=28B	−16N	+33B	=25N	4.5	36.5	37.5	16.50	2149	-15.2
30	Wu, DerekFM	2232	USA	+55B	+20N	−5B	=24N	=35B	+11N	=7B	F	F	4.5	33.0	33.0	19.75	2316	+16.4
31	Bednarek, Jan	1936	POL	=36N	=48B	=53N	=57B	−49N	+51B	=32N	−15B	+46N	4.5	27.5	29.0	13.50	2199	+114.0
32	Mantic, Andrej	2168	SVK	−3B	−55N	+38B	+47N	+45B	−10N	=31B	−17B	=50N	4.0	35.5	37.5	14.75	2108	-30.4
33	Andre, TomasCM	2080	SVK	−18B	+44B	−22N	−34N	+41B	+52N	=23B	−29N	=36B	4.0	35.0	37.5	14.50	2141	+31.2
34	Meszaros, Casey RyanCM	2133	SVK	=14N	−6B	=49N	+33B	−9N	−48B	+56N	=27B	=38N	4.0	35.0	37.0	14.25	2171	+18.0
35	Paprocki, Jaroslaw	2148	POL	=6N	−14B	+54N	+48B	=30N	+49B	−8N	−11B	F	4.0	34.5	34.5	13.25	2233	+18.6
36	Beres, Tomas	2182	SVK	=31B	−11N	=47N	−51B	+40N	+42B	−26N	=38B	=33N	4.0	34.0	36.5	16.00	2057	-29.2
37	Chitre ArushFM	2151	IND	=19N	=57B	=40N	=9B	=53N	+22B	−11N	=18B	F	4.0	34.0	34.0	16.75	2265	+30.9
38	Saksham Wadhwa	2121	IND	−8N	−22B	−32N	=56B	+54N	+43B	=24N	=36N	=34B	4.0	33.0	35.0	13.25	2086	-14.8
39	Rupesh Reddy YFM	2011	IND	−53N	+46B	=48N	=21N	=27B	=44B	+49N	−19B	−28N	4.0	32.0	34.5	14.50	2156	+66.0
40	Arshiya DasFM	2108	IND	=10B	=29N	=37B	−23N	−36B	=56N	=52B	=42N	+51B	4.0	32.0	34.0	13.75	2121	+6.8
41	Chiszko, Oskar	2149	POL	=57N	=19B	−26N	−25B	−33N	+47B	+55N	+48B	−18N	4.0	31.5	33.0	11.75	2120	-13.3
42	Srvatka, IgorCM	2104	SVK	−13B	−24N	=52B	=43N	+58B	−36N	=46N	=40B	+48N	4.0	30.5	31.5	11.00	2096	-1.2
43	Hitka, Dominik	1961	SVK	−12N	−51B	=46N	=42B	=47B	−38N	+58B	=44N	+54B	4.0	28.0	29.0	10.25	2060	+47.2
44	Gay, Lukas	2150	SVK	−2B	−33N	+56B	=50N	=52B	=39N	−22N	=43B	=47N	3.5	33.5	35.5	10.50	2033	-58.4
45	Stary, Simon	2038	CZE	=48N	+49B	−8N	=53B	−32N	+46B	=28N	−22B	−27N	3.5	33.0	35.5	11.50	2124	+38.4
46	Salgovic, Simon	2138	SVK	−5B	−39N	=43B	=58N	+55B	−45N	=42B	+51N	−31B	3.5	30.5	31.5	9.00	1990	-36.6
47	Lovcican, Tomas	2112	SVK	=49N	F	=36B	−32B	=43N	−41N	=54B	+55N	=44B	3.5	26.5	26.5	10.25	2069	-9.8
48	Kowalczyk, Rafal	2208	POL	=45B	=31N	=39B	−35N	=50B	+34N	−21B	−41N	−42B	3.0	33.0	36.0	11.50	1952	-60.4
49	Lang, Simon	2241	CZE	=47B	−45N	=34B	+55N	+31B	−35N	−39B	−24N	F	3.0	30.0	30.0	10.25	1996	-105.2
50	Janik, Marek Tobias	2017	SVK	−27B	F	−18N	=44B	=48N	−21N	=51B	+52N	=32B	3.0	30.0	30.0	9.00	2092	+28.4
51	Juhanak, DanielFM	2121	CZE	−17B	+43N	−29B	+36N	−10B	−31N	=50N	−46B	−40N	2.5	35.0	38.0	9.50	1955	-80.4
52	Petrek, Dominik	2201	SVK	−26N	−25B	=42N	+54B	=44N	−33B	=40N	−50B	F	2.5	29.5	29.5	7.75	1920	-59.0
53	Cherniack, Alex	2201	USA	+39B	−5N	=31B	=45N	=37B	−20N	F	F	F	2.5	27.0	27.0	10.00	2034	-27.0
54	Ondreicka, Roman	1937	SVK	=23B	−9N	−35B	−52N	−38B	F	=47N	+56B	−43N	2.0	30.5	30.5	6.25	1950	+0.4
55	Soucek, Andrej	2105	CZE	−30N	+32B	−19N	−49B	−46N	+58N	−41B	−47B	F	2.0	28.5	28.5	5.00	1985	-49.2
56	Babula, Matej	2080	CZE	−15N	−16B	−44N	=38N	F	=40B	−34B	−54N	+58N	2.0	28.5	28.5	5.00	1914	-68.0
57	Jancovic, PeterFM	2318	SVK	=41B	=37N	−20B	=31N	F	F	F	F	F	1.5	17.5	17.5	6.25	1998	-32.6
58	Kopecny, Filip	2046	SVK	=29B	−23N	−28N	=46B	−42N	−55B	−43N	F	−56B	1.0	29.5	29.5	4.00	1796	-88.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Bednarek, JanPOL
+114.0
4.5 pts · #28
2Zawisza, AlanPOL
+107.6
4.5 pts · #26
3Skreko, IgorSVK
+69.6
5.0 pts · #16

Top rating losers

1Lang, SimonCZE
-105.2
3.0 pts · #50
2Kopecny, FilipSVK
-88.8
1.0 pts · #58
3Juhanak, DanielFMCZE
-80.4
2.5 pts · #51

Biggest upsets

R7+230 Elo gap
FMRupesh Reddy Y2011 beat Lang, Simon2241
R1+225 Elo gap
Zawisza, Alan1976 beat Petrek, Dominik2201
R1+219 Elo gap
Flak, Pawel2156 beat IMJablonicky, Martin2375