CChessStats

Heraklion Winter 2025 Tournament - U1800

Open SwissStandard

23 players participated in this 6-round tournament, held from 29 Nov 2025 to 06 Dec 2025 in Heraklion Crete, Greece. Top 10 Elo average was 1527, and top seed was Marios Gavaletakis (🇬🇷 GRE, 1692).

Andreas Trelakas (🇬🇷 GRE, 1501) won with 5.0/6, ahead of Marios Gavaletakis (5.0) and Angelos Konstantinos Mavris (4.5). Trelakas won on tie-break after catching the field in the final round.

The biggest upset came in round 2: Georgios N Galanis (1507) beat Marios Gavaletakis (1692), a +185-point gap.

Location
🇬🇷Heraklion Crete, Greece
Dates
29 Nov 2025 → 06 Dec 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 6 rounds
Top seed
🇬🇷Marios Gavaletakis1692
Avg top 10
1,527
Participants
23
Federations · 1 represented
🇬🇷Greece×16
Top 3

How it unfolded

Top 6 · 6 rounds

Tight race until R6; 2 players tied at 5.0/6, decided on Buchholz.

Co-leaders
12
5
2
1
1
2
1.534.56R1R2R3R4R5R6Mavris takes lead
Trelakas5Gavaletakis5Mavris4.5Spyridakis4Georgopoulos4Fanourakis4
R5 · LEADER CHANGE06 Dec

Angelos Konstantinos Mavris takes the sole lead (4.5/5).

R6 · TIEBREAK CLUSTER

2 players finish on 5.0/6. Trelakas takes the title on Buchholz Cut1 (19.5).

WIN STREAKS · 3 top finishers

Andreas Trelakas 3 wins (R1–R3)Marios Gavaletakis 4 wins (R3–R6)Angelos Konstantinos Mavris 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Andreas Trelakas*—
1
0
2Marios Gavaletakis—*—
1
3Angelos Konstantinos Mavris
0
—*
1
4Ioannis Spyridakis
1
0
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Trelakas, Andreas1501GRE+11N+13B+5N−4N+7B+3B5.019.522.518.501762+65.2
2Gavaletakis, Marios1692GRE+15B−6N+8B+9N+5B+4N5.019.021.017.001697+0.6
3Mavris, Angelos Konstantinos1601GRE+21B=8N+6B+12N+4B−1N4.519.520.513.751659+15.2
4Spyridakis, Ioannis1617GRE+14N+20B+7N+1B−3N−2B4.021.523.514.001626+3.6
5Georgopoulos, Athanasios NA1441GRE+17B+12N−1B+6N−2N+13B4.020.022.012.0015480.0
6Galanis, Georgios N1507GRE+23N+2B−3N−5B+16N+11B4.018.518.510.001455-8.8
7Fanourakis, Angelos1490GRE+22B+9N−4B+15N−1N+8B4.018.019.010.001396-14.8
8Panagiotakis, Konstantinos G M1446GRE+18N=3B−2N+10B+14N−7N3.520.022.010.751321-16.8
9FIDE 421891010—+?N−7B=10N−2B+21N+16B3.515.515.54.757910.0
10Sapountzis, Christoforos0GRE−13N+11B=9B−8N+15B+18B3.515.017.08.756520.0
11Kampanis, Ioannis0GRE−1B−10N+23B+19N+12B−6N3.017.517.55.0013720.0
12Fanourakis, Nikolaos1481GRE+16N−5B+14N−3B−11N+17B3.016.518.57.00724-35.6
13Thomopoulos, Nikolaos1454GRE+10B−1N+22BF+17N−5N3.015.515.56.50674-38.4
14Garefalakis, Nikitas0GRE−4B+19N−12B+22N−8B+15N3.014.515.55.007140.0
15Garefalakis, Emmanouil0GRE−2N+23B+17N−7B−10N−14B2.017.517.52.007910.0
16FIDE 5410095500—−12B−17N+18B+21N−6B−9N2.014.515.53.006950.0
17FIDE 421891790—−5N+16B−15B+23N−13B−12N2.014.014.02.006610.0
18FIDE 5410100940—−8B−21N−16N+?B+19B−10N2.012.012.02.006460.0
19FIDE 5410095840—−20N−14B+?N−11B−18N+23N2.010.010.00.006840.0
20Lampaki, Emmanouela1476GRE+19B−4N+21BFFF2.07.07.03.00815-12.8
21FIDE 5410110740—−3N+18B−20N−16B−9B−?N1.014.014.02.007430.0
22Karaiskos, Vasileios0GRE−7N+?B−13N−14BFF1.010.010.00.006730.0
23FIDE 421973680—−6B−15N−11N−17B−?N−19B0.013.013.00.007080.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets