Introduction Above diagram refers. Black is winning. Everybody can see it but suddenly, out of blue, white played the confusing 1.Rc6 !
White’s rook is taboo...captured it and the game is draw because of the stalemate...anywhere black king move, white rook is going to give a check. The question now is how...black to play and win after white’s 1.Rc6
Trivia I first come across this puzzle about 20 years ago. I feed this position to the chess engine at that time (chessmaster, maybe first version of fritz...they cannot find the mate).
Even in early 2000 with mid fritz or Hiarc or Junior, chess engine could not see the mate
Now, year 2011 within second Fritz or Rybka will come up with the announcement, mate in 16!
We (Siraj and myself) once at DATCC showed this puzzle to IM Mok, after a few minute he is able to solve it!