International Chess Holiday 2025 - K3
10 players participated in this 9-round tournament, held from 03 Aug 2025 to 08 Aug 2025 in Praha, Czech Republic. 3 federations represented. Top 10 Elo average was 1835, and top seed was Joerg Hartmann (🇩🇪 GER, 1935).
Michal Langmaier (🇨🇿 CZE, 1853) won with 6.5/9, ahead of Arthur Guenther (6.0) and Oliver Schunke (5.5). Langmaier shared the lead from round 7 and won solo starting round 8.
The biggest upset came in round 4: Juraj Kostialik (1618) beat Joerg Hartmann (1935), a +317-point gap.
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How it unfolded
Top 10 · 9 roundsMichal Langmaier led from R8 onwards, the runner-up race stayed tight.
Michal Langmaier takes the sole lead (6.0/8).
Michal Langmaier beat Arthur Guenther (White).
Michal Langmaier went unbeaten across 9 games (R1–R9).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇨🇿Langmaier, Michal | 1853 | * | 1 | ½ | ½ | ½ | ½ | 1 | ½ | 1 | 1 | 6.5 | 26.50 | 38.5 | +70.8 | 1998 |
| 2 | 🇩🇪Guenther, Arthur | 1832 | 0 | * | ½ | 1 | ½ | ½ | ½ | 1 | 1 | 1 | 6.0 | 23.00 | 39.0 | +31.4 | 1960 |
| 3 | 🇩🇪Schunke, Oliver | 1875 | ½ | ½ | * | ½ | 1 | ½ | ½ | ½ | ½ | 1 | 5.5 | 23.25 | 39.5 | +9.6 | 1910 |
| 4 | 🇨🇿Smisek, Robin | 1824 | ½ | 0 | ½ | * | 1 | ½ | ½ | 1 | 1 | ½ | 5.5 | 22.25 | 39.5 | +44.8 | 1916 |
| 5 | 🇨🇿Pavlicek, Petr | 1916 | ½ | ½ | 0 | 0 | * | ½ | 1 | ½ | 1 | 1 | 5.0 | 18.75 | 40.0 | -11.4 | 1868 |
| 6 | 🇩🇪Hapke, Ralf | 1820 | ½ | ½ | ½ | ½ | ½ | * | ½ | ½ | ½ | ½ | 4.5 | 20.25 | 40.5 | +4.4 | 1836 |
| 7 | 🇩🇪Nelson, Wayne | 1872 | 0 | ½ | ½ | ½ | 0 | ½ | * | ½ | ½ | 1 | 4.0 | 15.75 | 41.0 | -19.8 | 1787 |
| 8 | 🇩🇪Hartmann, Joerg | 1935 | ½ | 0 | ½ | 0 | ½ | ½ | ½ | * | 1 | 0 | 3.5 | 15.25 | 41.5 | -92.4 | 1743 |
| 9 | 🇨🇿Plesnivy, Martin | 1801 | 0 | 0 | ½ | 0 | 0 | ½ | ½ | 0 | * | 1 | 2.5 | 9.00 | 42.5 | -30.6 | 1672 |
| 10 | 🇸🇰Kostialik, Juraj | 1618 | 0 | 0 | 0 | ½ | 0 | ½ | 0 | 1 | 0 | * | 2.0 | 8.50 | 43.0 | +7.2 | 1639 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Langmaier, MichalCZE+70.86.5 pts · #1
- 2Smisek, RobinCZE+44.85.5 pts · #4
- 3Guenther, ArthurGER+31.46.0 pts · #2
- 1Hartmann, JoergGER-92.43.5 pts · #8
- 2Plesnivy, MartinCZE-30.62.5 pts · #9
- 3Nelson, WayneGER-19.84.0 pts · #7
- R4+317 Elo gap
- R7+111 Elo gap
- R1+103 Elo gap