In July 1998, he reached his highest rating and position on the FIDE world rankings: 2650 and No.
Oll, who was married and had two sons, fell into depression after his divorce and loss of child custody.
[3] He committed suicide on 16 May 1999 by jumping out of a window of his fourth-floor apartment in Tallinn.
[4] He was buried at Metsakalmistu cemetery in Tallinn, not far away from the most famous Estonian chess player Paul Keres.
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