Marcel den Broeder

Rotterdam, The Netherlands
e-mail REGRESsion@chello.nl

Began playing bridge in 1980
intermediate level, interested in exotic systems.

Have been working since 1985 on Weak Opening Systems, especially REGRES. Inspired by Lukasz Slawinski.
Made several versions of Regres and since 1996 busy with a non HUM/BS version under the name ROWOS.

Next project: complete Encrypted biddingsystem under the name CRYPTOS.
WOS with or without an esthablished key in 1st. round in any 5+ card. Strong relays with or without an active key. Crypted information for balanced or unbalanced together with minimum or maximum HCP. Short/longsuit trials, Show or deny control.