And through the next three moves or so after 29, Carlsen goes from being about dead equal to a lesser position.

And I am not an endgame expert, so if anyone has any insight to this endgame I would appreciate it.

On move <39> when I played through this my first thought was, oh white should draw this. Black seemed to have the slightly better position, but it seemed like white would be able to hold.

I don't know if it was lost before move 39, or if with correct play white should be able to hold. Does anyone have any insight?

Thanks.

So I put it in Rybka 3.0, for a few minutes (and I don't have a very fast computer so sorry about the low ply) and after 16 ply it is rybka's fourth choice.

FEN:

click for larger view

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16 +0.34 Qa5c3 Bg7f6 Qc3a3 Kg8g7 Nb5a7 Qc6c5 Qa3xc5 d6xc5 Na7c6 Ne8d6 Ra1a5 Nd6b7 Ra5a8 Rd7d6 Nc6a5 16 +0.39 Bd3e2 Qc6c5 Qa5a3 Qc5xa3 Ra1xa3 Kg8f7 Kh1g1 Bg7f8 Ra3a8 Rd7b7 16 +0.40 Qa5a8 Qc6xa8 Ra1xa8 Kg8f7 Kh1g1 Bg7f6 Kg1f2 h7h5 Bd3e2 Bf6d8 Ra8a6 Kf7f8 h2h3 Kf8g8 Be2d1 16 +0.62 Nb5c3 Kg8f7 Bd3c2 Qc6c5 Qa5xc5 d6xc5 Bc2a4 Rd7d8 Ba4xe8+ Kf7xe8 Ra1a5 Rd8c8 Kh1g1 h7h5 Kg1f2 Rc8b8 Nd5c7+ Ke8e7 Nc7xe6 16 +0.67 Nb5a7 Qc6b7 c4c5 Be6xd5 e4xd5 d6xc5 Bd3f5 e5e4 Bf5xd7 Qb7xd7 Qa5a4 Qd7f7 Ra1b1 e4xf3 g2xf3 Bg7f8 Qa4c6 Ne8f6