All Winners

2018

Ryan Bancroft

United States

2015

Tung-Chieh Chuang

Taiwan

2012

Rafael Payare

Venezuela

2009

Joshua Weilerstein

United States

2005

Mei-Ann Chen

United States

1998

Seikyo Kim

Japan

1995

Jan Wagner

Venezuela

1992

Jin Wang

Austria

1989

Fabio Mechetti

Brasil

1986

Kazufumi Yamashita

Japan

1983

Claus Peter Flor

Germany

1980

Maximiano Valdes

Chile

1977

Philip Greenberg

United States

1974

Gotthard Lienicke

1971

Winston Dan Vogel

United States

1968

Avi Ostrowsky

Israel

1965

Ralf Weikert

Austria