James Mason vs. Georg Marco
The game between James Mason (white) and Georg Marko, Leipzig 1894, ended with a spectacular victory in two for the black.
Roll over to see the solution: 1... Rg1+ 2. Kxg1 Rxf1#
FEN: 6k1/pp4p1/2p5/2bp4/8/P5Pb/1P3rrP/2BRRN1K b - - 0 1
About the players
Georg Marco (1863-1923) was an Austrian chess player. He was born in Cernăuţi in Bukovina, which was part of the Austro-Hungarian Empire, then Romania and now Ukraine. He was secretary of the Vienna Chess Federation.

Solution was simple and it surprised me. This is a good example of the being wary of chess’ mechanics.
1 – Rg2-g1+ Kh1xg1
2 – Rf2xf1#
1….R G1 was the beautiful idea/
Rg2-g1+
2. Kh1xg1 Rf2xf1#
Not so difficult. Far too easy for chess champions.