The Aachen Open is the biggest European competition series. The first Aachen Open was held in 2009 and Aachen Open 2011 is currently the biggest competition ever beside World Championships 2009 and 2011. The competition is organized by some speedcubers from Aachen, amongst others Sébastien Auroux.
Aachen Open competitions
|Competition||Date||Number of competitors|
|Aachen Open 2009||10th/11th January, 2009||99|
|Aachen Open 2010||16th/17th January, 2010||154|
|Aachen Open 2011||14th-16th January, 2011||230|
|Aachen Summer Open 2012||23th/24th June, 2012||102|