[White "Daily tactics #14"]   [Black "White to play and win"]   [Result "1-0"]   [FEN "1r1bk2r/2R2ppp/p3p3/1b2P2q/4QP2/4N3/1B4PP/3R2K1 w - - 0 1"]   {The first move of this combination is obvious. White has to sacrifice the exchange on d8.}   1 Rxd8+  {The harder part of the puzzle is to make it work. One important motive is Ba3.   Black already has a choice:}   1... Rxd8    (1... Kxd8 2 Ra7!   {This amazing quiet move is the point. White has the  Qd4  and  Ba3  threats.}   2 ... Qe2 3 Qd4+ Ke8 4 h3!   {Another quiet move. Black is so tied up, that White has enough time to make some " luft"  for his king, and still retain all the threats.}   4... Rd8 5 Qc5!  {threatening Qe7 mate}  5 .. Rd7   {And now comes a fine  FINALE}   6 Ba3!   {The rook on a7 is taboo due to  Qc8  with mate, and Black is helpless against all the other threats.})   2 Ba3!   2... Qe2   {The toughest defence}   3 h3!!   {A familiar theme. Black is lost. Here is a very illustrative sample line. }   3... Qe1+ 4 Kh2 Qa5 5 Re7+ Kf8   6 Bb4 Qa4 7 Rd7+ Ke8 { And in this moment comes a star move.}   8 Nf5!!!   {Amazing sacrifice. Sample lines go like this:}   8... Kxd7   ( 8... Rxd7 9 Qa8+ Rd8 10 Ng7+ Kd7 11 Qb7  {with a similar mate})   ( 8... exf5 9 Re7+ Kf8 10 Qf5  {And black has no defence.})   9 Qb7+ Ke8 10 Ng7 {mate}