CChessStats

3rd International Open Katerini chess 2026 - B

Open SwissStandard

126 players participated in this 7-round tournament, held from 20 Mar 2026 to 23 Mar 2026 in Katerini, Greece. 5 federations represented. Top 10 Elo average was 1756, and top seed was Iakov Bahar-Mosse (πŸ‡¬πŸ‡· GRE, 1828).

Panagiotis Atmatsidis (πŸ‡¬πŸ‡· GRE, 1800) won with 6.5/7, ahead of Nikoleta Pasoglou (6.0) and Panagiotis Arg Sidiropoulos (6.0). Atmatsidis won solo starting round 5.

The biggest upset came in round 1: Athanasios Koutsionas (1495) beat Marios Siskos (1763), a +268-point gap.

Location
πŸ‡¬πŸ‡·Katerini, Greece
Dates
20 Mar 2026 β†’ 23 Mar 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss Β· 7 rounds
Top seed
πŸ‡¬πŸ‡·Iakov Bahar-Mosse1828
Avg top 10
1,756
Participants
126
Federations Β· 5 represented
πŸ‡¬πŸ‡·GreeceΓ—93
πŸ‡²πŸ‡°North MacedoniaΓ—8
πŸ‡ΉπŸ‡·TurkiyeΓ—5
πŸ‡§πŸ‡¬BulgariaΓ—3
πŸ‡©πŸ‡ͺGermanyΓ—1
Top 3

How it unfolded

Top 6 Β· 7 rounds

Panagiotis Atmatsidis led from R5; +0.5-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R5.

Co-leaders
51
22
10
3
1
1
1
23.55.57R1R2R3R4R5R6R7
R5–R7 Β· LEAD HELD

Panagiotis Atmatsidis held the sole lead from R5 through R7 without losing it.

WIN STREAKS Β· 3 top finishers

Panagiotis Atmatsidis 6 wins (R1–R6)Theodoros Matthaiou 6 wins (R2–R7)Panagiotis Arg Sidiropoulos 4 wins (R4–R7)

R4 Β· LATE SURGE

Theodoros Matthaiou was #12 at R4, climbed to #2 over the final stretch.

Key matchups Β· top 4

Head-to-head between the four finishers
Player1234
1Panagiotis Atmatsidis*β€”
1
Β½
2Theodoros Matthaiouβ€”*β€”β€”
3Panagiotis Arg Sidiropoulos
0
β€”*β€”
4Nikoleta Pasoglou
Β½
β€”β€”*

Grille amΓ©ricaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΞ”
1Atmatsidis, Panagiotis1800GRE+67N+73B+3N+84B+9N+18B=2N6.527.530.527.502025+26.0
2Pasoglou, Nikoleta1653GRE+126N+70B+10N=8B+49N+9B=1B6.028.028.022.252004+58.2
3Sidiropoulos, Panagiotis Arg1634GRE+63B+51Nβˆ’1B+62N+14N+49B+8N6.026.529.523.001957+107.2
4Matthaiou, Theodoros1688GREβˆ’18N+86B+36N+66B+33N+20B+10N6.025.027.523.001893+55.0
5Lamprinos, Athanasios Angelos1696GRE+110N+106Bβˆ’31N+24B+37N+11B+12N6.024.526.022.001881+27.4
6Talaverou, Vasiliki Viktoria1731GREβˆ’50N+15B+67N+61B+30N=13B+18N5.525.028.022.001734+2.4
7Kalfopoulos, Naoum1614GRE+17Nβˆ’18B+110N+53B=60N+50B+48N5.523.525.019.001770+25.4
8Antoniou Tragoudas, Ioannis1778GRE+68B+40N+23B=2N+11B=12Nβˆ’3B5.030.533.522.001765-1.2
9Tsintsar, Zoran1763GER+93N+61B+30N+33Bβˆ’1Bβˆ’2N+31N5.027.530.017.501763+1.0
10Bahar-Mosse, Iakov1828GRE+97B+56Nβˆ’2B+65N+31N+19Bβˆ’4B5.027.029.517.501769-7.8
11Nikolaki, Dimitria1589GRE+104N+71B+19N+20Bβˆ’8Nβˆ’5N+38B5.027.029.018.001781+26.2
12Patsiotis, Konstantinos1666GRE+90N+66B+25N=31B+52N=8Bβˆ’5B5.026.028.518.001759+37.2
13Giamouzis, Georgios1631GRE=41B+39NF+57N+21B=6N+23B5.026.026.021.251845+31.2
14Siskos, Marios1763GREβˆ’27B+109N+68B+56Nβˆ’3B+45N+33B5.025.027.016.501681-22.8
15Sidiropoulos, Emmanouil0GRE=42Bβˆ’6N+63B+81N+54B=21N+32B5.024.527.517.7516620.0
16Mavidis, Christos1564GRE+87B=22Nβˆ’34B+94N+64B=32N+60B5.021.023.515.251663+22.4
17Zavrakidis, Charalampos1414GREβˆ’7B+125Nβˆ’24B+102N+62B+65N+69N5.021.021.511.501660+37.6
18Atmaca, Osman Gurbet1455TUR+4B+7N=21B+34N+32Bβˆ’1Nβˆ’6B4.532.036.021.751794+121.2
19Paterakis, Panagiotis Emm1679GRE+55B+45Nβˆ’11B+72N+28Bβˆ’10N=27B4.526.529.517.251679+3.2
20Kougkoulis, Christos Orfeas1689GRE+58B+81N+28Bβˆ’11N+51Bβˆ’4N=40B4.526.529.516.501671-4.0
21Atanasovski, David1752MKD=36N+118B=18N+25Bβˆ’13N=15B+52N4.526.527.515.751617-29.6
22Giakoustidis, Spiros-Avgerinos1700GRE+26N=16Bβˆ’52N+85B=35N+61B=25N4.524.527.517.251641-9.8
23Papakyriakou, Petros1636GRE+92N+53Bβˆ’8N=35B+80N+52Bβˆ’13N4.524.026.514.501665+13.2
24Burns, Elisaveta1565MKD+112Nβˆ’60B+17Nβˆ’5N=55B+63B+49N4.524.025.514.751646+26.0
25Zachariadis, Konstantinos G1588GRE+88B+94Nβˆ’12Bβˆ’21N+105B+44N=22B4.523.025.013.251556-3.6
26Theofylaktou, Kyriaki1486GREβˆ’22B+88N=89B+59N=34B=28N+54B4.522.525.015.001683+64.0
27Koutsionas, Athanasios1495GRE+14Nβˆ’30Bβˆ’69N+101B+99N+37B=19N4.522.524.515.251709+71.6
28Adamaki, Angeliki1597GRE+91N+100Bβˆ’20N+77Bβˆ’19N=26B+53N4.522.524.513.251505-21.2
29Nikolaidis, Ioannis St1647GRE+57Bβˆ’62N+105Bβˆ’51N+68B=46N+55B4.520.522.514.001589+4.0
30Aidonidis, Stratis Spyridon1619GRE+78B+27Nβˆ’9B+44Nβˆ’6B=51N=41B4.026.529.515.251560-18.4
31Gallos, Vasileios1597GRE+103B+119N+5B=12Nβˆ’10B=60Nβˆ’9B4.026.027.013.001655+14.8
32Pantelidis, Kosmas1632GRE+82N+35B=49N+50Bβˆ’18N=16Bβˆ’15N4.025.528.514.751654+7.6
33Anemogianni, Savvina1597GRE+86N+98B+60Nβˆ’9Nβˆ’4B+35Bβˆ’14N4.025.527.511.501649+16.0
34Chalaris, Iason1626GRE+111N=50B+16Nβˆ’18B=26N=53B=46N4.025.026.514.251545-15.6
35Triantafyllaki, Sofia1513GRE+77Bβˆ’32N+102B=23N=22Bβˆ’33N+64B4.023.025.012.501448-11.6
36Gkadakis, Athanasios1494GRE=21B=89Nβˆ’4B+103N=47B=64N+65B4.023.025.012.001649+40.8
37Krastinsh Daniels1599BUL+96B=117N=64B+43Nβˆ’5Bβˆ’27N+68B4.023.024.511.751433-26.4
38Tamiolakis, Grigorios1706GRE+75B=52Nβˆ’42B=64N+67B+72Nβˆ’11N4.021.524.512.251589-34.8
39Diamantis, Theodoros0GRE=54Nβˆ’13B+118N+73Bβˆ’40N=80B+72B4.021.522.510.251568+47.2
40Blazhevski, Slaven1576MKD+113Nβˆ’8BF+58N+39B=69B=20N4.021.521.512.751671+24.8
41Burns, Kayla1430MKD=13N=79B+106N+99B=69Nβˆ’48B=30N4.021.023.011.501657+74.8
42Basinas, Georgios1518GRE=15N+120B+38Nβˆ’49Bβˆ’50N=98B+71N4.021.022.011.501518-0.2
43Kuscu, Aras Leo0TUR=79N+54B=99Nβˆ’37Bβˆ’53N+66B+62B4.020.022.012.0015770.0
44Tzima, Aikaterini0GREβˆ’99N+93B+70Nβˆ’30B+66Nβˆ’25B+61N4.020.022.011.5015680.0
45Ntougkos, Dimitrios1545GRE+74Nβˆ’19B+100Nβˆ’60B+92Nβˆ’14B+98N4.020.022.09.501449-19.2
46Petasakis, Emmanouil1530GRE+121Nβˆ’84B+74Nβˆ’69B+111N=29B=34B4.019.020.09.751520-3.2
47Athanasopoulos, Nikolaos NA1608GRE+109BFβˆ’50N=76B=36N+75N+51B4.019.019.012.001567-9.6
48Penintas, Vasileios1658GREF+87Nβˆ’117B+75N+98B+41Nβˆ’7B4.018.518.511.501645-0.8
49Papandreou, Nikolaos1734GRE+76B+65N=32B+42Nβˆ’2Bβˆ’3Nβˆ’24B3.527.530.512.001583-27.8
50Feidaros, Ioannis1491GRE+6B=34N+47Bβˆ’32N+42Bβˆ’7NF3.527.027.015.501680+62.4
51Cicek, Baris1510TUR+114Nβˆ’3B+71N+29Bβˆ’20N=30Bβˆ’47N3.526.027.511.001476-9.2
52Orten, Tomris Hilal1568TUR+95N=38B+22B+117Nβˆ’12Bβˆ’23Nβˆ’21B3.525.026.510.501541-7.2
53Tafaki, Despoina Theocharia1519GRE+125Bβˆ’23N+119Bβˆ’7N+43B=34Nβˆ’28B3.523.524.07.501299-37.2
54Pachatiroglou, Apollonas1584GRE=39Bβˆ’43N+120N+90Bβˆ’15N+76Bβˆ’26N3.523.024.08.501561-5.6
55Tzima, Anthia1454GREβˆ’19N+123Bβˆ’61N+83B=24N+70Bβˆ’29N3.522.523.59.251433-6.0
56Borisov, Filippos1588GRE+101Nβˆ’10B+92Nβˆ’14B=76N+58Bβˆ’85N3.522.024.09.501524-24.0
57Xynidis, Maximos1447GREβˆ’29N+121B+79Nβˆ’13Bβˆ’61N=74B+91N3.521.022.08.001390-10.0
58Belovska, Sofija1456MKDβˆ’20N+112B=73Nβˆ’40B+88Nβˆ’56N+114B3.519.020.57.001286-26.4
59Chrysidis, Ioannis1606GREβˆ’100N+91B=90Nβˆ’26Bβˆ’63N+86B+111N3.517.018.57.751458-39.6
60Mekolli, Iraklis1697GREF+24Nβˆ’33B+45N=7B=31Bβˆ’16N3.027.027.013.251581-35.2
61Baras, Konstantinos1565GRE+107Bβˆ’9N+55Bβˆ’6N+57Bβˆ’22Nβˆ’44B3.026.028.09.001545-6.4
62Zaires Karanasios, Konstantinos1519GRE+124N+29Bβˆ’84Nβˆ’3Bβˆ’17N+82Bβˆ’43N3.025.526.08.001493-3.6
63Bikiaropoulos, Vasileios Nektarios1436GREβˆ’3N=124Bβˆ’15N+71B+59Bβˆ’24N=89B3.024.525.08.001523+16.4
64Theodorou, Lazaros0GRE+80N=99B=37N=38Bβˆ’16N=36Bβˆ’35N3.024.026.010.0015150.0
65Asaridou, Antigoni1573GRE+83Nβˆ’49B+82Nβˆ’10B+110Nβˆ’17Bβˆ’36N3.023.525.07.501452-41.2
66Chrysostomidis, Alkiviadis1537GRE+116Bβˆ’12N+78Bβˆ’4Nβˆ’44Bβˆ’43N+122B3.023.524.55.501465-5.8
67Kechagioglou, Athanasios1501GREβˆ’1B+103Nβˆ’6B+96Nβˆ’38N+122Bβˆ’77N3.023.524.55.50946-22.8
68Bougas, Theodoros1499GREβˆ’8N+113Bβˆ’14N+122Bβˆ’29N+101Bβˆ’37N3.022.023.04.50881-21.4
69Kasmeridis, Orfeas1670GREFF+27B+46N=41B=40Nβˆ’17B3.021.521.512.501588-18.8
70Serapli, Aikaterini1527GRE+102Bβˆ’2Nβˆ’44B+100N=78Bβˆ’55N=88B3.021.023.06.751236-42.0
71Orten, Asya Hilal0TUR+72Bβˆ’11Nβˆ’51Bβˆ’63N+103B+108Nβˆ’42B3.020.522.57.0012780.0
72Androulakis, Radamanthys Pavlos1544GREβˆ’71N+104B+122Nβˆ’19B+82Nβˆ’38Bβˆ’39N3.020.521.56.001365-36.4
73Burns, Joshua Benjamin1568MKDFβˆ’1N=58Bβˆ’39N=87B+107N+105B3.020.520.57.001447-30.0
74Michailidis, Vasileios0GREβˆ’45B+108Nβˆ’46Bβˆ’78N+96B=57N=75B3.020.022.07.7512440.0
75Moutzouris, Ioannis1490GREβˆ’38N=95B+124Nβˆ’48B+91Nβˆ’47B=74N3.020.020.55.75855-33.6
76Giamouzi, Alexandra1493GREβˆ’49N+83BF=47N=56Bβˆ’54N+87B3.020.020.09.251434-13.6
77Stamenkovski, Kalin0MKDβˆ’35NF+97Bβˆ’28N=89B=81N+67B3.019.519.58.2515510.0
78Zavrakidis, Lazaros1419GREβˆ’30N+114Bβˆ’66N+74B=70Nβˆ’85B=79N3.019.020.57.501306-26.0
79Tsonoulis, Athanasios 415201548GRE=43B=41Nβˆ’57Bβˆ’98N+119B=87N=78B3.019.020.07.751315-19.4
80Margariti, Stamatia1503GREβˆ’64B+96N=94B+89Nβˆ’23B=39NF3.019.019.08.251563+10.0
81Loshkov, Konstantin1563MKD+123Nβˆ’20B=98Nβˆ’15B+90N=77BF3.018.018.06.0015700.0
82Malamousi, Georgia1434GREβˆ’32B+116Nβˆ’65B+115Nβˆ’72Bβˆ’62N+101B3.016.518.05.00766-50.8
83Kakoulidis, Eleftherios0GREβˆ’65Bβˆ’76N+108Bβˆ’55N+100Bβˆ’105N+104N3.015.517.56.007000.0
84Gazetis, Evripidis1662GRE+108B+46N+62Bβˆ’1NFFF3.015.515.59.001741+13.2
85Bakratsas, Emmanouil1510GREFFFβˆ’22N+94B+78N+56B3.013.513.59.001694+30.8
86Koutroupa, Maria0GREβˆ’33Bβˆ’4N+107Bβˆ’97N=95Bβˆ’59N+115B2.520.522.04.75799-56.4
87Koukiotis, Evangelos0GREβˆ’16Nβˆ’48B=91N+118B=73N=79Bβˆ’76N2.520.521.55.2513300.0
88Piperidou, Angeliki0GREβˆ’25Nβˆ’26BF+93Nβˆ’58B+90B=70N2.520.520.56.5013490.0
89Stylianou, Dimitrios Iason1637GREF=36B=26Nβˆ’80B=77N=92B=63N2.520.020.08.501399-63.2
90Kontaki, Maria1452GREβˆ’12B+107N=59Bβˆ’54Nβˆ’81Bβˆ’88N+120B2.519.520.54.751284-27.2
91Megagiannis, Konstantinos0GREβˆ’28Bβˆ’59N=87B+120Nβˆ’75B+93Nβˆ’57B2.519.520.54.757330.0
92Gkadakis, Dimitrios1441GREβˆ’23B+115Nβˆ’56B+95Nβˆ’45B=89NF2.518.518.55.251278-13.2
93Kountrias, Apostolos1496GREβˆ’9Bβˆ’44N=95Nβˆ’88B+124Nβˆ’91B+112N2.518.018.53.259590.0
94Vitolianos, Georgios0GREFβˆ’25B=80Nβˆ’16Bβˆ’85N+118B+110N2.518.018.04.0013710.0
95Karastatira, Chrysanthi0GREβˆ’52B=75N=93Bβˆ’92B=86Nβˆ’106B+118N2.516.017.05.0012630.0
96Malamousi, Evanthia0GREβˆ’37Nβˆ’80B+123Nβˆ’67Bβˆ’74N=112B+113N2.516.017.03.257300.0
97Alexakis, Aleksandros1502GREβˆ’10N+101Bβˆ’77N+86BF=111BF2.514.014.05.251581+4.8
98Thomaidis, Konstantinos0GREFβˆ’33N=81B+79Bβˆ’48N=42Nβˆ’45B2.022.022.06.5014480.0
99Kalyva, Ioanna1593GRE+44B=64N=43Bβˆ’41Nβˆ’27BFF2.019.519.57.50672-53.2
100FIDE 5410268100β€”+59Bβˆ’28Nβˆ’45Bβˆ’70Bβˆ’83N+119NF2.019.019.04.5013730.0
101FIDE 421569710β€”βˆ’56Bβˆ’97N+116Bβˆ’27N+102Bβˆ’68Nβˆ’82N2.018.520.03.507000.0
102FIDE 421912620β€”βˆ’70N+111Bβˆ’35Nβˆ’17Bβˆ’101Nβˆ’104B+123B2.017.518.52.5013010.0
103Skarla, Maria Eleni0GREβˆ’31Nβˆ’67B+121Nβˆ’36Bβˆ’71NF+107B2.017.018.03.007270.0
104FIDE 5410086690β€”βˆ’11Bβˆ’72Nβˆ’115B+116Nβˆ’107B+102Nβˆ’83B2.016.518.03.507650.0
105Paraskevopoulou, Aikaterini1475GREFFβˆ’29N+113Bβˆ’25N+83Bβˆ’73N2.016.516.54.50780-41.2
106Kastanis, Konstantinos1545GRE+115Bβˆ’5Nβˆ’41Bβˆ’109NF+95NF2.016.016.04.00777-36.0
107Karastatiras, Theodoros0GREβˆ’61Nβˆ’90Bβˆ’86N+121B+104Nβˆ’73Bβˆ’103N2.015.016.03.007200.0
108Kastani, Christina1450GREβˆ’84Nβˆ’74Bβˆ’83N+124B+112Nβˆ’71BF2.014.014.02.008580.0
109FIDE 258149310β€”βˆ’47Nβˆ’14B+112N+106BFFF2.012.512.53.5015090.0
110Apostolou, Minas1456GREβˆ’5BFβˆ’7B+119Nβˆ’65B=114Nβˆ’94B1.519.519.51.75830-33.2
111Zlatkov, Boris1424BULβˆ’34Bβˆ’102NF+114Nβˆ’46B=97Nβˆ’59B1.517.517.52.751246-29.6
112FIDE 5410267990β€”βˆ’24Bβˆ’58Nβˆ’109B+125Nβˆ’108B=96Nβˆ’93B1.517.017.51.757090.0
113FIDE 5410234630β€”βˆ’40Bβˆ’68N+125Bβˆ’105Nβˆ’114B=115Nβˆ’96B1.514.515.01.257140.0
114FIDE 421912380β€”βˆ’51Bβˆ’78NFβˆ’111B+113N=110Bβˆ’58N1.514.514.52.2510860.0
115FIDE 5410086850β€”βˆ’106Nβˆ’92B+104Nβˆ’82Bβˆ’122N=113Bβˆ’86N1.513.514.52.756740.0
116Papadimitratou, Maria0GREβˆ’66Nβˆ’82Bβˆ’101Nβˆ’104Bβˆ’121N+124B=125N1.511.512.00.756830.0
117Navrozidis, Iordanis0GREF=37B+48Nβˆ’52BFFF1.511.511.56.0016070.0
118FIDE 5410047870β€”Fβˆ’21Nβˆ’39Bβˆ’87N+120Bβˆ’94Nβˆ’95B1.017.017.01.007820.0
119FIDE 5410267800β€”Fβˆ’31Bβˆ’53Nβˆ’110Bβˆ’79Nβˆ’100B+121N1.015.015.01.007310.0
120FIDE 5410132390β€”Fβˆ’42Nβˆ’54Bβˆ’91Bβˆ’118N+121Bβˆ’90N1.014.514.51.007180.0
121FIDE 421925520β€”βˆ’46Bβˆ’57Nβˆ’103Bβˆ’107N+116Bβˆ’120Nβˆ’119B1.014.015.01.506860.0
122FIDE 5410048170β€”FFβˆ’72Bβˆ’68N+115Bβˆ’67Nβˆ’66N1.013.513.51.507160.0
123Krastinsh, Krists0BULβˆ’81Bβˆ’55Nβˆ’96BF+125BFβˆ’102N1.013.513.50.507120.0
124FIDE 421912110β€”βˆ’62B=63Nβˆ’75Bβˆ’108Nβˆ’93Bβˆ’116NF0.515.015.01.5012060.0
125FIDE 421986580β€”βˆ’53Nβˆ’17Bβˆ’113Nβˆ’112Bβˆ’123NF=116B0.514.014.00.757200.0
126Kalfas, Charalampos1447GREβˆ’2BFFFFFF0.06.06.00.00853-9.6

Key insights

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

Top rating gainers
Top rating losers
Biggest upsets
3rd International Open Katerini chess 2026 - B β€” Katerini, Greece | Chess Tournament Results | ChessStats