Did you know that NN defeated both, Philidor and & Alekhine.
I'm pretty sure she is the only player who has accomplised this.
How do you know NN is a female?
Here is a game of your great NN:
[Event "Miscellaneous Game"]
[Site "?"]
[Date "1620.??.??"]
[Round "75"]
[White "Gioachino Greco"]
[Black "NN"]
[Result "1-0"]
[WhiteElo "?"]
[BlackElo "?"]
[ECO "D20"]
[EventDate "?"]
[PlyCount "11"]
1.d4 d5 2.c4 dxc4 3.e3 b5 4.a4 c6 5.axb5 cxb5 6.Qf3
1-0
Here is another where he won:
[Event "Paris"]
[Site "Paris"]
[Date "1925.??.??"]
[Round "?"]
[White "Alexander Alekhine"]
[Black "NN"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[ECO "B62"]
[EventDate "?"]
[PlyCount "74"]
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Bb5 Bd7 8.0-0 Be7 9.Nb3 a6 10.Be2 Qc7
11.f4 0-0 12.Bf3 Rac8 13.Qe2 Rfd8 14.Rad1 b5 15.a3 Ne8 16.Bxe7 Nxe7 17.e5 Bc6 18.Nd4 dxe5 19.fxe5
Qb6 20.Kh1 Rxd4 21.Rxd4 Qxd4 22.Bxc6 Nxc6 23.Ne4 Qxe5 24.Qf3 Qf5 25.Qe2 Qg6 26.c3 Ne5 27.h3 f5
28.Nd2 Qf6 29.a4 Nd6 30.axb5 axb5 31.Re1 Ndc4 32.Nxc4 Nxc4 33.b3 Na5 34.Qxb5 Qxc3 35.Rxe6 Qc1+
36.Kh2 Qf4+ 37.Kh1 Rc1+
0-1
Here is another game where he beat none other than Karpov!
http://www.chessgames.com/perl/chessgame?gid=1555381
How do you know NN is a female?
Well, if you must know.
Quite a while ago I was on vacation in Spain. There I... euhhhm had "contact" with this girl. When I asked her name she told me it was NN, after that she vanished.
I know what you are thinking, but she doesn't look like she's 500 years old. 
Didn't know she beat Karpov. Cool 
OH MY GOD NN means No Name, so not known player, not one man
OH MY GOD NN means No Name, so not known player, not one man
It's a joke bro.
The greatness off NN.
If you have a player that is undervalued and underestimated, then it must be NN.
In most chessbooks NN seems always the one pitted against great minds, who falls for every trap there is.
However, NN has a broad self made database, and though there clearly are some ups and downs, I would like to talke about the ups.
Did you know that NN defeated both, Philidor and & Alekhine.
I'm pretty sure she is the only player who has accomplised this.
So if you ever see or hear someone ridicule NN, keep the following games in mind
http://www.chessgames.com/perl/chessgame?gid=1012353
http://www.chessgames.com/perl/chessgame?gid=1075424