CChessStats

36th open SO Peristeriou

Open SwissStandard

21 players participated in this 7-round tournament, held from 20 Jan 2026 to 03 Mar 2026 in Peristeri, Greece. Top 10 Elo average was 1459, and top seed was Ioannis Dimogkotsis (🇬🇷 GRE, 1822).

Omar El Champasi (🇬🇷 GRE, 1723) won with 6.0/7, ahead of Orestis Bantounas Sarantopoulos (5.5) and Ioannis Ntaifas (5.5). El Champasi clinched sole first place in the final round.

The biggest upset came in round 2: Michail Vafeiadakis (1538) beat Ioannis Dimogkotsis (1822), a +284-point gap.

Location
🇬🇷Peristeri, Greece
Dates
20 Jan 2026 → 03 Mar 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
🇬🇷Ioannis Dimogkotsis1822
Avg top 10
1,459
Participants
21
Federations · 1 represented
🇬🇷Greece×11
Top 3

How it unfolded

Top 6 · 7 rounds

Omar El Champasi led from R3; +0.5-point edge over the runner-up.

Co-leaders
8
4
1
1
1
1
1
23.55.57R1R2R3R4R5R6R7Bantounas Sarantopoulos takes leadEl Champasi takes lead
El Champasi6Ntaifas5.5Bantounas Sarantopoulos5.5Vafeiadakis4.5Marinopoulos4.5Mentzos4.5
R5 · LEADER CHANGE17 Feb

Orestis Bantounas Sarantopoulos takes the sole lead (4.5/5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Omar El Champasi beat Ioannis Ntaifas (White).

WIN STREAKS · 3 top finishers

Omar El Champasi 4 wins (R1–R4)Ioannis Ntaifas 3 wins (R5–R7)Orestis Bantounas Sarantopoulos 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Omar El Champasi*
1
0
1
2Ioannis Ntaifas
0
*
½
—
3Orestis Bantounas Sarantopoulos
1
½
*
1
4Michail Vafeiadakis
0
—
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1El Champasi, Omar1723GRE+18N+12B+4N+3B−2N+5B+8B6.025.526.521.001869+20.2
2Bantounas Sarantopoulos, Orestis1589GRE+16N+21B=3N+15B+1B+4NF5.523.523.516.251967+68.8
3Ntaifas, Ioannis1754GRE+17B+10N=2B−1N+15N+9B+12N5.521.022.513.751766+3.4
4Vafeiadakis, Michail1538GRE+13B+9N−1B+16N=5N−2B+10N4.524.025.511.751608+8.0
5Mentzos, Apostolos1645GRE−10B+13N+7B+12N=4B−1N+14N4.521.523.512.251580-10.0
6Marinopoulos, Nikolaos Sp0GRE=15B+?NF+20B+9N+10BF4.517.017.07.7516760.0
7FIDE 5410229390—−9B+19N−5N+13B−12B+11N+16B4.015.516.57.008420.0
8Gkountouvas, Vasileios1574GREF=11B+18N−9B+17N+15B−1N3.515.515.55.251554-2.2
9Dimogkotsis, Ioannis1822GRE+7N−4BF+8N−6B−3N+13B3.026.528.59.501503-49.2
10FIDE 5410237650—+5N−3BF+11N+19B−6N−4B3.022.522.58.0015270.0
11FIDE 5410177810—+14B=8NF−10B+20N−7BF2.515.516.54.7515740.0
12Eftaxiadis, Dimitrios1457GRE+19B−1NF−5B+7NF−3B2.021.021.05.00908-11.8
13FIDE 421840700—−4N−5B+14B−7NF+17B−9N2.019.520.53.508750.0
14Patsaris, Konstantinos0GRE−11N−18B−13NF+16B+19N−5B2.012.512.52.508460.0
15Polychronopoulos, Filippos1490GRE=6N+20BF−2N−3B−8NF1.524.025.03.25839-36.8
16FIDE 5410177220—−2B=17NF−4B−14N+18B−7N1.518.518.51.757730.0
17FIDE 421879580—−3N=16B−20N+?B−8B−13NF1.513.513.50.758640.0
18FIDE 5410177140—−1B+14N−8B−19NF−16N−?B1.016.016.02.008490.0
19FIDE 5410209010—−12N−7BF+18B−10N−14BF1.013.013.01.006580.0
20FIDE 5410238030—F−15N+17B−6N−11BFF1.011.011.01.506900.0
21FIDE 3581084280—F−2NFFFFF0.07.57.50.007890.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets