[Event "World Cup 2015"]  [Site "?"]  [Date "2017.04.24"]  [Round "?"]  [White "Pavel Eljanov"]  [Black "Sergey Karjakin"]  [Result "1-0"]  [SetUp "1"]  [FEN "4rbk1/pp3pp1/q2r1n1p/n1p1N3/2P2P1B/3P1Q2/1P4BP/R4R1K w - - 0 1"]  [PlyCount "9"]   1. d4 {[pgndiagram] This amazing move wins in all variations. The idea will be  revealed soon} Rxd4 (1... cxd4 2. b4) 2. Qc3 $1 {The point, White either wins  a piece, or forces Black to cut his own queen by b6} b6 3. Bxf6 gxf6 {  [pgndiagram] Now White has a winning attack} 4. Qg3+ Bg7 5. Rg1 {Almost  anything else wins, but as it is, Black has no defence.} 1-0