Riichi Open Series: Riichi Copenhagen Open and Riichi Aarhus Open

Since 2003 Mahjong Denmark has organized two annual riichi competitions. The Riichi Copenhagen/Aarhus Open series of competitions has European ranking weight 1.

Previous winners

• CPH Open 2022: Cancelled
• CPH Open 2021: Cancelled
• CPH Open 2020: Frédéric Chassot (CH)
• CPH Open 2019: Henrik Leth
• CPH Open 2018: Jasper Germeys (SE)
• CPH Open 2017: Kim Iversen
• CPH Open 2016: Henrik Leth
• CPH Open 2015: No Copenhagen or Aarhus Open took place
• CPH Open 2014: Camilla Dalsgaard
• CPH Open 2013: Lena Smith
• CPH Open 2012: Brian Krog
• CPH Open 2011: Senechal Duhaut (CAN)
• CPH Open 2010: Lena Smith
• AAR Open 2009: Anders Labich
• CPH Open 2008: Camilla Dalsgaard
• AAR Open 2007: Riichi Aarhus Open did not take place
• CPH Open 2006: Brian Krog
• CPH Open 2005: Martin Wedel Jacobsen
• CPH Open 2004: Freddy Christiansen
• CPH Open 2003: Jacob Buch