Fritz found a mate in 10 after 22.Nh6+!! Qxh6 23.Rxf8+ Kxf8 24.Qe2.
However, the game continued 22.Qf4 Nd7 23.Re6 Nd7 23.Re6 cxb2?? 24.Rxb6 Ra1 25.Rxb4 Rxf1+ 26.Qxf1 Rxf7 27.Qb1 1-0, Heikkinen - Raivio, 1997.
