[Event "?"]  [Site "?"]  [Date "2017.05.25"]  [Round "?"]  [White "Tactics #52"]  [Black "   Alekhine - Fletcher, Simul, 1928   "]  [Result "1-0"]  [SetUp "1"]  [FEN "1r3rn1/p5bk/b2pP2p/q1pP1p2/1p2nP1N/3QB2P/PP4B1/3NRR1K w - - 0 1"]  [PlyCount "13"]   {[pgndiagram] White sacrifices his queen in order to create a windmill} 1. Qxe4  fxe4 {Everything else is better} (1... Bxf1 2. Rxf1 Ne7 {Is probably to be  prefered, but here White has a decisive material advantage}) 2. Bxe4+ Kh8 3.  Ng6+ {[pgndiagram] Now the windmill is in full operation. White forces the  mate by removing the rook on f8 and planting a knight on f7} Kh7 4. Nxf8+ Kh8  5. Ng6+ Kh7 6. Ne5+ Kh8 7. Nf7# {[pgndiagram] A very appealing combination} 1-0