One of most splendid move ever played

I don't know if anyone saw this game yesterday at the European championship, credit goes to Eljanov; had he gone for the draw chance before move 40, we would never have the chance to see such a marvelous move !
TAKE YOUR TIME and try to guess what Khismatullin played here :

http://en.lichess.org/Bo1ELRta#86

Whaaat in the world.... unbelievable

This is how you beat 2700+ players, with utterly aberrant sequence of moves :)