Therwiler Afternoon Open TAO 2025 round 4
Open SwissStandard
14 players participated in this 4-round tournament, held on 19 Nov 2025 in Therwil, Switzerland. 2 federations represented. Top 10 Elo average was 1671, and top seed was Andrew Lumsdon (🇨🇭 SUI, 1959).
Helmut Locher (🇩🇪 GER, 1853) won with 1.0/4, ahead of Paul Erzinger (1.0) and Andrew Lumsdon (0.5). Locher won on tie-break after catching the field in the final round.
Location
🇨🇭Therwil, Switzerland
Dates
19 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Federations · 2 represented
🇨🇭Switzerland×13
🇩🇪Germany×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 4 roundsTight race until R4; 2 players tied at 1.0/4, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 3 at the finish.
Co-leaders
21
19
19
3
R4 · TIEBREAK CLUSTER
2 players finish on 1.0/4. Locher takes the title on Buchholz Cut1 (0.0).
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Locher, Helmut | 1853 | GER | F | F | F | +13N | 1.0 | 0.0 | 0.0 | 0.00 | 2683 | +10.4 |
| 2 | Erzinger, Paul | 1943 | SUI | F | F | F | +12B | 1.0 | 0.0 | 0.0 | 0.00 | 2478 | +8.0 |
| 3 | Lumsdon, Andrew | 1959 | SUI | F | F | F | =6B | 0.5 | 0.5 | 0.5 | 0.25 | 1897 | -1.6 |
| 4 | Maitre, Fabien | 1812 | SUI | F | F | F | =5N | 0.5 | 0.5 | 0.5 | 0.25 | 1866 | +1.0 |
| 5 | Lenders, Jean-Pierre | 1860 | SUI | F | F | F | =4B | 0.5 | 0.5 | 0.5 | 0.25 | 1833 | -1.0 |
| 6 | Polanyi, Peter | 1891 | SUI | F | F | F | =3N | 0.5 | 0.5 | 0.5 | 0.25 | 1952 | +1.6 |
| 7 | Fankhauser, Martin | 0 | SUI | F | F | F | =8N | 0.5 | 0.5 | 0.5 | 0.25 | 1810 | +3.6 |
| 8 | Ledermann, Wolfgang | 1833 | SUI | F | F | F | =7B | 0.5 | 0.5 | 0.5 | 0.25 | 1748 | -1.8 |
| 9 | Kaeppeli, Viktor | 0 | SUI | F | F | F | =?N | 0.5 | 0.0 | 0.0 | 0.00 | 1515 | 0.0 |
| 10 | Tschumi, Herbert | 0 | SUI | F | F | F | =?B | 0.5 | 0.0 | 0.0 | 0.00 | 1817 | 0.0 |
| 11 | Mcillmurray, John | 0 | SUI | F | F | F | =?B | 0.5 | 0.0 | 0.0 | 0.00 | 1662 | 0.0 |
| 12 | Bonauer, Stephan | 1678 | SUI | F | F | F | −2N | 0.0 | 1.0 | 1.0 | 0.00 | 1118 | -4.0 |
| 13 | Meier, Franz | 1878 | SUI | F | F | F | −1B | 0.0 | 1.0 | 1.0 | 0.00 | 1067 | -10.4 |
| 14 | Affentranger, Urs | 0 | SUI | F | F | F | −?B | 0.0 | 0.0 | 0.0 | 0.00 | 903 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Locher, HelmutGER+10.41.0 pts · #1
- 2Erzinger, PaulSUI+8.01.0 pts · #2
- 3Fankhauser, MartinSUI+3.60.5 pts · #9
Top rating losers
- 1Meier, FranzSUI-10.40.0 pts · #14
- 2Bonauer, StephanSUI-4.00.0 pts · #13
- 3Ledermann, WolfgangSUI-1.80.5 pts · #11