CChessStats

ACC Sirius Open Sep 2025

Open SwissStandard

20 players participated in this 5-round tournament, held from 09 Sept 2025 to 05 Oct 2025 in Athens, Greece. 2 federations represented. Top 10 Elo average was 1765, and top seed was Konstantinos Kesoglou (πŸ‡¬πŸ‡· GRE, 1905).

Konstantinos Kesoglou (πŸ‡¬πŸ‡· GRE, 1905) won with 4.5/5, ahead of Dimitrios Vazelakis (4.0) and Anastasios Kratidis (4.0). Kesoglou won solo starting round 4.

The biggest upset came in round 4: Sofia Ritinioti (1466) beat Evangelos Pitsinos (1674), a +208-point gap.

Location
πŸ‡¬πŸ‡·Athens, Greece
Dates
09 Sept 2025 β†’ 05 Oct 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss Β· 5 rounds
Top seed
πŸ‡¬πŸ‡·Konstantinos Kesoglou1905
Avg top 10
1,765
Participants
20
Federations Β· 2 represented
πŸ‡¬πŸ‡·GreeceΓ—19
πŸ‡ΈπŸ‡·SurinameΓ—1
Top 3

How it unfolded

Top 6 Β· 5 rounds

Konstantinos Kesoglou led from R4; +0.5-point edge over the runner-up.

Co-leaders
10
4
2
1
1
1.52.545R1R2R3R4R5
Kesoglou4.5Vazelakis4Mastoras4Kratidis4Ter-Gevorkian3Pavlis3
R4–R5 Β· LEAD HELD

Konstantinos Kesoglou held the sole lead from R4 through R5 without losing it.

R4 Β· HEAD-TO-HEAD Β· WINNER VS 2ND

Konstantinos Kesoglou beat Dimitrios Vazelakis (White).

WIN STREAKS Β· 2 top finishers

Konstantinos Kesoglou 4 wins (R1–R4)Dimitrios Vazelakis 3 wins (R1–R3)

Key matchups Β· top 4

Head-to-head between the four finishers
Player1234
1Konstantinos Kesoglou*
1
Β½
β€”
2Dimitrios Vazelakis
0
*β€”
1
3Ilias I. Mastoras
Β½
β€”*β€”
4Anastasios Kratidisβ€”
0
β€”*

Grille amΓ©ricaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΞ”
1Kesoglou, Konstantinos1905GRE+9N+6B+11N+2B=4B4.513.515.513.502116+20.0
2Vazelakis, Dimitrios1862GRE+15N+10B+3Nβˆ’1N+5B4.014.015.511.001972+14.4
3Kratidis, Anastasios1728GRE+14N+5Bβˆ’2B+10N+8B4.012.013.59.501920+26.8
4Mastoras, Ilias I.1803GRE+17B=12N+13B+11B=1N4.09.510.57.501906+13.4
5Ter-Gevorkian, Giannis1905GRE+13Bβˆ’3N+12B+6Nβˆ’2N3.012.514.06.001749-17.6
6Pavlis, Antonios1716GRE+18Bβˆ’1N+17Bβˆ’5B+12N3.010.011.03.501720+0.4
7Pitsinos, Evangelos1674GREβˆ’12B+14N+18Bβˆ’8N+16B3.06.57.53.501379-47.2
8Ritinioti, Sofia1466GRE+16Nβˆ’11N=9B+7Bβˆ’3N2.511.512.55.251637+42.8
9Giannoukakos, Nikolaos1602GREβˆ’1BF=8N+15B+11N2.510.511.54.751759+15.6
10Kapagiannidis, Konstantinos1689GRE+20Nβˆ’2N+16Bβˆ’3B=13N2.510.510.51.751561-12.6
11dos Ramos, Geryen1767SUR+19N+8Bβˆ’1Bβˆ’4Nβˆ’9B2.013.514.53.501570-24.2
12Chondroglou, Stergios1559GRE+7N=4Bβˆ’5NFβˆ’6B1.513.014.05.001688+11.2
13Nikolopoulos, Spyridon K1588GREβˆ’5N+19Bβˆ’4NF=10B1.510.511.52.251616+2.0
14Chatzikyriakos, Christos0GREβˆ’3Bβˆ’7B=15N+20NF1.59.59.50.7513440.0
15Kiloukiotis, Dimitrios1516GREβˆ’2Bβˆ’18N=14Bβˆ’9N+20B1.59.09.00.75932-19.6
16Ritiniotis, Nikolaos1485GREβˆ’8BFβˆ’10N+19Bβˆ’7N1.010.511.51.001369-12.0
17Mourtzouni, Maria1508GREβˆ’4N+20Bβˆ’6NFF1.010.010.00.00960-7.6
18Hajderaj, Eduart0GREβˆ’6N+15Bβˆ’7NFF1.09.010.01.5015110.0
19Papadopoulos, Emanouil1432GREβˆ’11Bβˆ’13N+20Bβˆ’16NF1.05.55.50.00813-33.6
20Papasotiriou, Markella0GREβˆ’10Bβˆ’17Nβˆ’19Nβˆ’14Bβˆ’15N0.06.57.50.007320.0

Key insights

Biggest movers and upsets β€” the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
ACC Sirius Open Sep 2025 β€” Athens, Greece | Chess Tournament Results | ChessStats