In 1987 Robert Rabiega represented the West Germany at the World Youth Chess Championship in U18 age group that were held in Innsbruck.

In 1991 he won in Berlin, in 1993 he took 2nd place in the Open chess tournament in Dresden and triumphed in Poznań.

In 1996 Robert Rabiega achieved his first success at the German Chess Championship with his 6th place in Dudweiler.

[5] In 2007 he shared first place with Imre Héra, Radosław Jedynak, Ilia Balinov and Grzegorz Gajewski at the tournament in Oberwart[6] and won the 14.

As a trainer, Robert Rabiega is committed to talented young players and to school chess.