Kammala wannan jumla: An haifi Onat a Istanbul a 1929 kuma ya koma Izmir a 1930 tare da iyalinsa. Ya fara wasan chess ne a makarantar sakandaren İzmir Atatürk, ya kammala karatunsa daga Faculty of Pharmacy na Jami'ar Istanbul. Onat, wanda ya sadu da manyan 'yan wasa yayin da yake dalibi a Istanbul, ya yi hutu daga wasan chess lokacin da ya koma Izmir. A matsayin dan wasan chess, ya shiga cikin 17th, 18th, 25th, 26th da
Kungiyar 'Yan wasan Chess ta Turkiyya ta 27 a gasar Olympics. Ya lashe gasar zakarun Turkiyya ta 1974, 1975 da 1982.