OLOMOUC CHESS SUMMER 2025 - A1

Round-RobinStandard

10 players participated in this 9-round tournament, held from 17 Aug 2025 to 24 Aug 2025 in Olomouc, Czech Republic. 10 titled players from 4 federations. Top 10 Elo average was 2392, and top seed was Patryk Cieslak (🇵🇱 POL, IM, 2470).

Jakub Kusa (🇨🇿 CZE, IM, 2387) won with 7.0/9, ahead of Patryk Cieslak (6.0) and Robert Ernst (5.5). Kusa won solo starting round 6.

Location

🇨🇿Olomouc, Czech Republic

Dates

17 Aug 2025 → 24 Aug 2025

Time control

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

System

Round-robin · 9 rounds

Top seed

🇵🇱IMPatryk Cieslak2470

Avg top 10

2,392

Participants

Titled players · 10

GM×3

IM×4

FM×3

Federations · 4 represented

🇨🇿Czech Republic×5

🇸🇰Slovakia×2

🇵🇱Poland×2

🇦🇹Austria×1

Top 3

🥇
IMJakub Kusa
🇨🇿CZE·2387
7.0pts·2613perf+25.7
🥈
IMPatryk Cieslak
🇵🇱POL·2470
6.0pts·2508perf+4.4
🥉
FMRobert Ernst
🇦🇹AUT·2365
5.5pts·2475perf+27.4

How it unfolded

Top 10 · 9 rounds

IM Jakub Kusa led from R6 onwards, the runner-up race stayed tight. Title race converged from 4 co-leaders at R4 to 1 by R6.

Co-leaders

Kusa#1Cieslak#2Ernst#3Haba#4Pacher#5Simacek#6Gnojek#7Rybka#8Szwed#9Frank#10

R6 · LEADER CHANGE21 Aug

IM Jakub Kusa takes the sole lead (4.5/6).

R8 · DECISIVE LEAD23 Aug

IM Jakub Kusa opens a +1.5-point gap over the chasing pack (closest: IM Patryk Cieslak); the title is out of reach before R9.

R1 · HEAD-TO-HEAD · WINNER VS 2ND

IM Jakub Kusa drew with IM Patryk Cieslak (White).

Cross-table

#	Player	Elo	1	2	3	4	5	6	7	8	9	10	Pts	SB	Bh	Δ Elo	Perf
1	🇨🇿IMKusa, Jakub	2387	*	½	½	½	1	1	1	½	1	1	7.0	28.25	38.0	+25.7	2613
2	🇵🇱IMCieslak, Patryk	2470	½	*	1	½	½	½	½	½	1	1	6.0	25.25	39.0	+4.4	2508
3	🇦🇹FMErnst, Robert	2365	½	0	*	½	1	½	1	1	½	½	5.5	22.50	39.5	+27.4	2475
4	🇨🇿GMHaba, Petr	2402	½	½	½	*	½	0	½	1	½	1	5.0	21.00	40.0	+3.7	2434
5	🇸🇰GMPacher, Milan	2392	0	½	0	½	*	½	½	½	1	1	4.5	17.00	40.5	0.0	2392
7	🇨🇿IMGnojek, Petr	2425	0	½	½	1	½	*	0	½	½	½	4.0	17.50	41.0	-9.6	2345
6	🇨🇿GMSimacek, Pavel	2399	0	½	0	½	½	1	*	½	½	½	4.0	16.25	41.0	-6.0	2348
10	🇨🇿IMFrank, Adam	2371	½	½	0	0	½	½	½	*	0	½	3.0	14.25	42.0	-24.0	2269
9	🇵🇱FMSzwed, Jacek	2321	0	0	½	½	0	½	½	1	*	0	3.0	12.25	42.0	-5.3	2275
8	🇸🇰FMRybka, Simon	2389	0	0	½	0	0	½	½	½	1	*	3.0	11.25	42.0	-29.2	2267

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Ernst, RobertFMAUT
+27.4
5.5 pts · #3
2Kusa, JakubIMCZE
+25.7
7.0 pts · #1
3Cieslak, PatrykIMPOL
+4.4
6.0 pts · #2

Top rating losers

1Rybka, SimonFMSVK
-29.2
3.0 pts · #8
2Frank, AdamIMCZE
-24.0
3.0 pts · #10
3Gnojek, PetrIMCZE
-9.6
4.0 pts · #7