Correct it's a Pseudo Queen Sac to trade down into an easy won ending.
Alekhine - Euwe World Championship Match 1937
White to play.
Reconise the same combination winning a valuable pawn for White?
Alekhine missed it and the game was drawn 34 moves later.
Four postions from RHP. Spot the same shot.
All the RHP players did and went onto to win.
Osbert of Arden - fifi08 RHP 2009 Black to play
swordfishtrombone - mikeviking RHP 2008 White to play
DeepThought- Drax946 RHP 2005 White to play.
Mdasev - Engenhocas RHP 2007 Black to play.
And finally....
greenpawn34 - carluzvi RHP 2009
1.e4 c5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6 5.0-0 d5 6.exd5 cxd5 7.d4 e6 8.Re1 h6 9.c4 Nf6 10.cxd5 Nxd5 11.dxc5 Bxc5 12.Qa4+ Bd7 13.Qg4 {I'm not getting anything from this opening, so I go fishing for blunders.} 13...Qf6 14.Nbd2 g5 15.Ne4 Qe7 16.Nxc5 Qxc5 17.Ne5 {still just sniffing about waiting for a trick to appear.} 17...Nf6 {Got one. Loose Knight on f6, loose Rook on a8.} 18.Qf3 Ke7 {The most obvious move protecting the Knight and holding the a1 Rook. But...} 19.Qxf6+ Kxf6 20.Nxd7+ {and Black resigned.}