Tammer-Shakin viikonlopputurnaus 2026, D-ryhma
Open SwissStandard
14 players participated in this 4-round tournament, held from 02 May 2026 to 03 May 2026 in Tampere, Finland. Top 10 Elo average was 1657, and top seed was Joona Heino (🇫🇮 FIN, 1738).
Ohto Koskensilta (🇫🇮 FIN, 1569) won with 3.5/4, ahead of Jouni Mauri (3.0) and Stella Zhu (3.0). Koskensilta won solo starting round 3.
The biggest upset came in round 2: Jari Lehtonen (1600) beat Leevi Jaakkola (1721), a +121-point gap.
Location
🇫🇮Tampere, Finland
Dates
02 May 2026 → 03 May 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Federations · 1 represented
🇫🇮Finland×13
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsOhto Koskensilta led from R3; +0.5-point edge over the runner-up.
Co-leaders
4
2
1
1
R3–R4 · LEAD HELD
Ohto Koskensilta held the sole lead from R3 through R4 without losing it.
WIN STREAKS · 2 top finishers
Ohto Koskensilta 3 wins (R1–R3)Jouni Mauri 3 wins (R2–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ohto Koskensilta | * | — | 1 | ½ |
| 2Stella Zhu | — | * | — | — |
| 3Jouni Mauri | 0 | — | * | — |
| 4Jyrki Sillanpaa | ½ | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Koskensilta, Ohto | 1569 | FIN | +2B | +7B | +6N | =4N | 3.5 | 7.5 | 9.5 | 8.25 | 1927 | +53.6 |
| 2 | Mauri, Jouni | 0 | FIN | −1N | +10B | +7N | +6B | 3.0 | 7.5 | 9.5 | 6.00 | 1634 | 0.0 |
| 3 | Zhu, Stella | 1562 | FIN | =11N | +9B | =5N | +8B | 3.0 | 6.5 | 8.0 | 6.00 | 1837 | +58.0 |
| 4 | Sillanpaa, Jyrki | 1688 | FIN | =9N | +13B | =8N | =1B | 2.5 | 7.5 | 8.0 | 4.25 | 1693 | +0.2 |
| 5 | Jaakkola, Leevi | 1721 | FIN | +12B | −6N | =3B | +11B | 2.5 | 6.5 | 8.0 | 4.50 | 1734 | +2.4 |
| 6 | Lehtonen, Jari | 1600 | FIN | +14N | +5B | −1B | −2N | 2.0 | 9.0 | 9.0 | 2.50 | 1773 | +27.6 |
| 7 | Virkkala, Vilho | 1673 | FIN | +10B | −1N | −2B | +14N | 2.0 | 8.5 | 8.5 | 2.00 | 1611 | -6.8 |
| 8 | Nuutinen, Mikko | 1654 | FIN | =13N | +11B | =4B | −3N | 2.0 | 7.0 | 7.5 | 3.00 | 1632 | -4.8 |
| 9 | Salmela, Olli | 1545 | FIN | =4B | −3N | +13B | =12N | 2.0 | 7.0 | 7.5 | 2.50 | 1653 | +22.8 |
| 10 | FIDE 525626 | 0 | — | −7N | −2N | +14B | +13N | 2.0 | 5.5 | 5.5 | 0.50 | 1670 | 0.0 |
| 11 | Kanjovski, Michael | 1655 | FIN | =3B | −8N | +12B | −5N | 1.5 | 7.5 | 9.0 | 3.00 | 1582 | -17.2 |
| 12 | Heino, Joona | 1738 | FIN | −5N | +14B | −11N | =9B | 1.5 | 6.0 | 6.0 | 1.00 | 1557 | -40.0 |
| 13 | Jarvinen, Miika | 1623 | FIN | =8B | −4N | −9N | −10B | 0.5 | 6.5 | 8.5 | 1.00 | 1356 | -19.6 |
| 14 | Sjoskog, Tommy | 1653 | FIN | −6B | −12N | −10N | −7B | 0.0 | 6.0 | 7.5 | 0.00 | 870 | -28.4 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Zhu, StellaFIN+58.03.0 pts · #1
- 2Koskensilta, OhtoFIN+53.63.5 pts · #4
- 3Lehtonen, JariFIN+27.62.0 pts · #8
Top rating losers
- 1Heino, JoonaFIN-40.01.5 pts · #10
- 2Sjoskog, TommyFIN-28.40.0 pts · #14
- 3Jarvinen, MiikaFIN-19.60.5 pts · #13
Biggest upsets
- R2+121 Elo gap
- R2+104 Elo gap