CChessStats

Martti Haminan 70-vuotisjuhlaturnaus Group C

Open SwissStandard

18 players participated in this 4-round tournament, held from 16 Aug 2025 to 17 Aug 2025 in Lahti, Finland. Top 10 Elo average was 1797, and top seed was Risto Matikainen (🇫🇮 FIN, 1900).

Sami Simonen (🇫🇮 FIN, 1861) won with 3.0/4, ahead of Risto Matikainen (3.0) and Neo Toppinen (3.0). Simonen shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: Niklas Pihlajamaki (1698) beat Mikko Piippo (1864), a +166-point gap.

Location
🇫🇮Lahti, Finland
Dates
16 Aug 2025 → 17 Aug 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Top seed
🇫🇮Risto Matikainen1900
Avg top 10
1,797
Participants
18
Federations · 1 represented
🇫🇮Finland×17
Top 3

How it unfolded

Top 6 · 4 rounds

Tight race until R4; 4 players tied at 3.0/4, decided on Buchholz. Title race narrowed from 4 co-leaders at R4 to 4 at the finish.

Co-leaders
8
1
3
4
1234R1R2R3R4
Matikainen3Toppinen3Simonen3Pihlajamaki3Alho2.5Taavitsainen2.5
R4 · TIEBREAK CLUSTER

4 players finish on 3.0/4. Simonen takes the title on Buchholz Cut1 (8.5).

R2 · HEAD-TO-HEAD · WINNER VS 2ND

Risto Matikainen drew with Neo Toppinen (White).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Risto Matikainen*
½
½
—
2Neo Toppinen
½
*——
3Sami Simonen
½
—*
½
4Niklas Pihlajamaki——
½
*

Grille américaine

#PlayerEloFedR1R2R3R4PtsBu C1BuSBPerfΔ
1Simonen, Sami1861FIN+11B+5N=2B=4N3.08.510.57.501934+15.2
2Matikainen, Risto1900FIN+15N=3B=1N+7B3.08.09.56.501911+5.6
3Toppinen, Neo1768FIN+14B=2N+8B=5N3.07.59.06.251899+27.6
4Pihlajamaki, Niklas1698FIN+17N=13B+9N=1B3.06.57.55.251946+40.0
5Taavitsainen, Vesa1759FIN+18N−1B+13N=3B2.57.57.53.001789+4.8
6Alho, Olli1830FIN=10N−7B+14N+13B2.55.57.04.001811-2.4
7Salvi, Tuomas1744FIN−8B+6N+16B−2N2.07.59.04.001720-2.4
8Nuutinen, Mikko1589FIN+7N=9B−3N=10B2.07.09.04.001792+30.8
9Piippo, Mikko1864FIN+16B=8N−4B=12N2.07.08.53.501663-19.8
10Tuominen, Martti0FIN=6B=12N=11B=8N2.06.58.54.2517080.0
11Gemenetzis, Iris1607FIN−1N+17B=10N=16B2.06.57.52.751517-10.4
12Alamaki, Jaakko1806FIN−13N=10B+15N=9B2.05.57.03.501701-7.4
13Lilja, Olavi Jouko1738FIN+12B=4N−5B−6N1.58.010.03.501686-12.4
14Arlovskaya, Ekaterina1577FIN−3N=15B−6B+18N1.57.07.00.751426-21.6
15Zhu, Stella1500FIN−2B=14N−12B+17B1.56.57.51.751488-4.8
16Kesavaara, Aarni1563FIN−9N+18B−7N=11N1.56.06.01.001465-13.2
17FIDE 5180340—−4B−11N+18B−15N1.06.56.50.008010.0
18Pohjola, Jari0FIN−5B−16N−17N−14B0.05.56.50.008310.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets