This is a type of endgame GMs SHOULD be able to hold, even blindfolded
Garayev - Caruana (US Championship - Round 7)
Black to move! How should black proceed?
a) 2. Ka6 Rg5+, 3. Rxd3+ Kxd3 Black wins
b) 2. Ka4 Rh5!, 3. Rf3 Rh1!, 4. Ka5 Rh6! (decisive move) and White is completely lost.