Repeated moves in Opening Explorer

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varelse1

https://www.chess.com/explorer?moveList=e4+e6+d4+d5+Nd2+c5+Ngf3+cxd4+exd5+Qxd5+Bc4+Qd6+O-O+Nf6+Nb3+Nc6&ply=16

 

So I was browsing through the Opening Explorer, and I reached the following position:

And here I read white's top two choices are 9.Nbxd4 (with 2644 games played), and 9.Nbd4!! (With 1988 games played)

But they are both the same move!

Bug or what?

Allegretta

Wonder if they're referring to the two different knights, both which can take d4?

Drsam74

yes, probably: Nbxd4 and Nfxd4. Play them both and see.

https://www.365chess.com/opening.php?m=17&n=1483&ms=e4.e6.d4.d5.Nd2.c5.Ngf3.cxd4.exd5.Qxd5.Bc4.Qd6.O-O.Nf6.Nb3.Nc6&ns=3.16.12.17.74.682.583.880.5560.1309.1232.1310.1464.1482.1465.1483

jdcannon

Weird. I put in a bug report. 

varelse1

Problem is I followed both, and both times, was the b-knight that captured.

And both moves have exactly the same stats, (Though different number of moves played.)

varelse1

Also, 9.Nfxd4 was listed further down the list.