fredthebear: It's another Greco's Mate.
15.Ng2 Qh2# or 15.Kh1 Qh2#.
This B-N-Q pattern hitting f2 & h2 simultaneously is the Greco Mate most often shown in chess books, but there are other variations. A structure key in this example is that the f2-pawn has not been moved, but is pinned to the endangered king.
"How to Beat Your Dad at Chess" by Murray Chandler, Gambit Publications Ltd 1998 is an excellent training tool for daily or weekly use. (I recommend starting with Checkmates 36 through 50, then go to the front of the book. Only study the examples on the LEFT side pages a few dozen times. Once readily familiar w/the patterns on the LEFT through steady daily repetition, then try the pages on the right side.) After a month or so of regular use, diligent students will be speed reading the LEFT side of this puzzle book like math flash cards in just 2-3 minutes. At that point, it takes just a quick glance to stay sharp. Your blitz chess will improve mightily (both your attack and defense abilities will improve). "How to Beat Your Dad at Chess" has a hard cover and will withstand rigorous daily use.
Chandler's book has a catchy but self-limiting name. The material certainly applies to beating your daughter, sister, neighbor, chess coach, or local club champion. Forceful fundamentals apply regardless of opponent! A few of the samples are misnamed (for example, 11.Petrosian's combination to force a perpetual check draw is a useful escape tool to remember, not a checkmate), but the puzzles and page-by-page explanations are all worthwhile.
Greco's Mate w/the B-N-Q pattern hitting f2 & h2 is Deadly Checkmate 26, page 64 in Chandler's training book just described. I consider Deadly Checkmates 2, 9, 27, 28, & 31 as variations of Greco's Mate.
Chandler states on p. 64 "Technically the name [Greco's Mate] could apply to a wide range of positions where White opens the h-file by means of a knight sacrifice on the g-file. Gioacchinno Greco (1600-c.1634) was an Italian chess writer, who published a number of ground-breaking manuals on the game."
FTB's examples of Greco's Mate:
FTB considers a rook (or queen) sacrifice (or pin) to open the h-file for mate by the other as a variation of Greco's Mate. The constant is the bishop's aim through the f2/f7 square.