The Hamamatsu International Piano Competition has been held every 3 years since 1991 in Hamamatsu, Shizuoka, Japan, and is open to pianists up to 30 years old.
History
The Piano Competition was inaugurated in 1991 to commemorate the eightieth anniversary of the founding of Hamamatsu City on July 1, 1911.
References
Hamamatsu International Piano Competition Wikipedia(Text) CC BY-SA