CHESS SOLUTION:

It was White who forced resignation after 1 Bd3 ! (threat: 2 Qe8 #) Bxc3; 2 Qe8 + , Kg7; 3 Qe7 + ,

Kg8; 4 Bc4 + , 1 – 0 Mate follows after 4...Kh8; 5 Qf8 + , Kh7; 6 Bd3 #