The International Open Tournament (BT) was first organized in 1989 at the same time as the finals (AT) were played. It gives possibility to enjoy playing games to those who did not qualify to AT.
| Event | Location | Results | Articles | Games | Photos | Videos |
|---|
| World Championship BT 1989 | (Kyoto Japan) | Results | - | - | - | - |
| World Championship BT 1991 | (Moscow Russia) | Results | - | Games (69) | - | - |
| World Championship BT 1993 | (Arjeplog Sweden) | Results | - | Games (64) | - | - |
| World Championship BT 1995 | (Tallinn Estonia) | Results | - | Games (95) | Photos (1) | - |
| World Championship BT 1997 | (Saint Petersburg Russia) | Results | Articles (1) | Games (171) | - | - |
| World Championship BT 1999 | (Beijing China) | Results | - | Games (102) | - | - |
| World Championship BT 2001 | (Kyoto Japan) | Results | - | Games (175) | Photos (8) | - |
| World Championship BT 2003 | (Vadstena Sweden) | Results | - | Games (122) | Photos (5) | - |
| World Championship BT 2005 | (Tallinn Estonia) | Results | - | Games (1) | Photos (2) | - |
| World Championship BT 2007 | (Tyumen Russia) | Results | - | Games (106) | - | - |
| World Championship BT 2009 | (Pardubice Czech Republic) | Results | - | Games (79) | - | - |
| World Championship BT 2011 | (Huskvarna Sweden) | Results | - | Games (109) | Photos (11) | - |
| World Championship BT 2013 | (Tallinn Estonia) | Results | - | Games (153) | Photos (6) | - |
| World Championship BT 2015 | (Suzdal Russia) | Results | - | Games (162) | Photos (3) | - |
| World Championship BT 2017 | (Taipei Chinese Taipei) | Results | - | Games (135) | - | - |
| World Championship BT 2019 | (Tallinn Estonia) | Results | - | Games (153) | Photos (6) | - |
| World Championship BT 2022 | (Istanbul Turkey) | - | - | - | - | - |