The 13th World Puzzle Championship (and Congress) took place October 12 – 17, 2004 in Opatija, Hotel Ambassador.
Individual results
| Rank | Name | Country |
|---|---|---|
| 1 | Niels Roest | NED |
| 2 | Ulrich Voigt | GER |
| 3 | Roger Barkan | USA |
| 4 | Zoltan Horvath | HUN |
| 5 | Michael Ley | GER |
| 6 | Sebastien Leroy | BEL |
| 7 | Wei-Hwa Huang | USA |
| 8 | Byron Calver | USA |
| 9 | Štefan Gašpar | SVK |
| 10 | Pal Madarassy | HUN |
Team results
| Rank | Team |
|---|---|
| 1 | USA |
| 2 | Germany |
| 3 | Hungary |
| 4 | Netherlands |
| 5 | Canada |
| 6 | Japan |
| 7 | Czech Republic |
| 8 | Belgium |
| 9 | Romania |
| 10 | Croatia |