Mate in two vs White to move
No. 1991 Tactic: Chess, Combination | www.masterchessopen.com
547816
[Event "No. 1991 Tactic: Chess, Combination"]
[Site "www.masterchessopen.com"]
[Round "0"]
[White "Mate in two"]
[Black "White to move"]
[FEN "8/8/1R1B4/8/1NkN4/8/8/R3K3 w Q - 0 1"]
1. O-O-O *
http://chessmicrobase.com/microbases/5685/games/547816?token=54vmnyeu