Here is a video of him from January 2008 Estonia-Finland 100 boards match. It's a quite hilarious game, if you look at 0:50-1:30.

click for larger view

<1...d2 2.Ra5 d1Q 3.Bxd1 Bxd1 4.Ke3=> (tablebase draw) <4... Bc2 5.Rc5 Bd3 6.Rd5 Bf1 7.Ra5 Bg2 8.Kf2 Bh1 9.Ke3> (karner is doing some sipping now and uncorked...) <9...Bf3 10.Rb5 Bh5 11.Ra5 Bf7 12.Rc5 Bg6 13.Ra5 Ke6 14.Ra6+ Bd6 15.Kd4 Kd7 16.Kd5> shake hands, draw agreed

Was White Risto Nevanlinna ?

Then his opponent stops the clock and offers his hand?! I suppose Karner had offered a draw or what?

(Is he really 73 in the video?)

I stopped by he to note that he's listed as <Karner, Hillary> in <RUSbase>'s version of <URS Cup (1970)>.

Oh, and here's another picture of the player (<whiteshark>'s chessbase link is now stale):

http://www.esbl.ee/admin/ph2002/jpg...

from here (Estonian):

http://www.eestimale.ee/gfx/media_c...

Kärner was known for his sharp and uncompromising playing style. He recorded wins against two world champions, Tal (1971 and 1983) and Karpov (1972). He was also the only Estonian player who beat Paul Keres (1976) in a tournament game. At the Estonian Chess Championships he won 11 medals (seven gold, three silver and one bronze).

Kärner is the author of book - «Kuus aastakümmet Caissa lummuses» («Six decades under the spell of Caissa»), Published by Argo, Tallinn, 2012 (the book contains 200 of his games including his wins against Tal, Karpov and Keres):